[{"intvolume":"         8","day":"01","publisher":"Springer Nature","type":"journal_article","date_updated":"2025-01-27T10:52:16Z","scopus_import":"1","quality_controlled":"1","oa_version":"None","citation":{"chicago":"Heyl, Jeremy, Victor Doroshenko, Denis González-Caniulef, Ilaria Caiazzo, Juri Poutanen, Alexander Mushtukov, Sergey S. Tsygankov, et al. “Complex Rotational Dynamics of the Neutron Star in Hercules X-1 Revealed by X-Ray Polarization.” <i>Nature Astronomy</i>. Springer Nature, 2024. <a href=\"https://doi.org/10.1038/s41550-024-02295-8\">https://doi.org/10.1038/s41550-024-02295-8</a>.","short":"J. Heyl, V. Doroshenko, D. González-Caniulef, I. Caiazzo, J. Poutanen, A. Mushtukov, S.S. Tsygankov, D. Kirmizibayrak, M. Bachetti, G.G. Pavlov, S.V. Forsblom, C. Malacaria, V.F. Suleimanov, I. Agudo, L.A. Antonelli, L. Baldini, W.H. Baumgartner, R. Bellazzini, S. Bianchi, S.D. Bongiorno, R. Bonino, A. Brez, N. Bucciantini, F. Capitanio, S. Castellano, E. Cavazzuti, C.-T. Chen, S. Ciprini, E. Costa, A. De Rosa, E. Del Monte, L. Di Gesu, N. Di Lalla, A. Di Marco, I. Donnarumma, M. Dovčiak, S.R. Ehlert, T. Enoto, Y. Evangelista, S. Fabiani, R. Ferrazzoli, J.A. Garcia, S. Gunji, K. Hayashida, W. Iwakiri, S.G. Jorstad, P. Kaaret, V. Karas, F. Kislat, T. Kitaguchi, J.J. Kolodziejczak, H. Krawczynski, F. La Monaca, L. Latronico, I. Liodakis, S. Maldera, A. Manfreda, F. Marin, A. Marinucci, A.P. Marscher, H.L. Marshall, F. Massaro, G. Matt, I. Mitsuishi, T. Mizuno, F. Muleri, M. Negro, C.-Y. Ng, S.L. O’Dell, N. Omodei, C. Oppedisano, A. Papitto, A.L. Peirson, M. Perri, M. Pesce-Rollins, P.-O. Petrucci, M. Pilia, A. Possenti, S. Puccetti, B.D. Ramsey, J. Rankin, A. Ratheesh, O.J. Roberts, R.W. Romani, C. Sgrò, P. Slane, P. Soffitta, G. Spandre, D.A. Swartz, T. Tamagawa, F. Tavecchio, R. Taverna, Y. Tawara, A.F. Tennant, N.E. Thomas, F. Tombesi, A. Trois, R. Turolla, J. Vink, M.C. Weisskopf, K. Wu, F. Xie, S. Zane, Nature Astronomy 8 (2024) 1047–1053.","apa":"Heyl, J., Doroshenko, V., González-Caniulef, D., Caiazzo, I., Poutanen, J., Mushtukov, A., … Zane, S. (2024). Complex rotational dynamics of the neutron star in Hercules X-1 revealed by X-ray polarization. <i>Nature Astronomy</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41550-024-02295-8\">https://doi.org/10.1038/s41550-024-02295-8</a>","ama":"Heyl J, Doroshenko V, González-Caniulef D, et al. Complex rotational dynamics of the neutron star in Hercules X-1 revealed by X-ray polarization. <i>Nature Astronomy</i>. 2024;8:1047-1053. doi:<a href=\"https://doi.org/10.1038/s41550-024-02295-8\">10.1038/s41550-024-02295-8</a>","ieee":"J. Heyl <i>et al.</i>, “Complex rotational dynamics of the neutron star in Hercules X-1 revealed by X-ray polarization,” <i>Nature Astronomy</i>, vol. 8. Springer Nature, pp. 1047–1053, 2024.","mla":"Heyl, Jeremy, et al. “Complex Rotational Dynamics of the Neutron Star in Hercules X-1 Revealed by X-Ray Polarization.” <i>Nature Astronomy</i>, vol. 8, Springer Nature, 2024, pp. 1047–53, doi:<a href=\"https://doi.org/10.1038/s41550-024-02295-8\">10.1038/s41550-024-02295-8</a>.","ista":"Heyl J et al. 2024. Complex rotational dynamics of the neutron star in Hercules X-1 revealed by X-ray polarization. Nature Astronomy. 8, 1047–1053."},"author":[{"full_name":"Heyl, Jeremy","first_name":"Jeremy","last_name":"Heyl"},{"full_name":"Doroshenko, Victor","first_name":"Victor","last_name":"Doroshenko"},{"last_name":"González-Caniulef","first_name":"Denis","full_name":"González-Caniulef, Denis"},{"full_name":"Caiazzo, Ilaria","first_name":"Ilaria","orcid":"0000-0002-4770-5388","id":"8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d","last_name":"Caiazzo"},{"full_name":"Poutanen, Juri","first_name":"Juri","last_name":"Poutanen"},{"full_name":"Mushtukov, Alexander","last_name":"Mushtukov","first_name":"Alexander"},{"first_name":"Sergey S.","last_name":"Tsygankov","full_name":"Tsygankov, Sergey S."},{"last_name":"Kirmizibayrak","first_name":"Demet","full_name":"Kirmizibayrak, Demet"},{"full_name":"Bachetti, Matteo","last_name":"Bachetti","first_name":"Matteo"},{"full_name":"Pavlov, George G.","first_name":"George G.","last_name":"Pavlov"},{"first_name":"Sofia V.","last_name":"Forsblom","full_name":"Forsblom, Sofia V."},{"last_name":"Malacaria","first_name":"Christian","full_name":"Malacaria, Christian"},{"last_name":"Suleimanov","first_name":"Valery F.","full_name":"Suleimanov, Valery F."},{"first_name":"Iván","last_name":"Agudo","full_name":"Agudo, Iván"},{"full_name":"Antonelli, Lucio Angelo","last_name":"Antonelli","first_name":"Lucio Angelo"},{"full_name":"Baldini, Luca","last_name":"Baldini","first_name":"Luca"},{"full_name":"Baumgartner, Wayne H.","first_name":"Wayne H.","last_name":"Baumgartner"},{"last_name":"Bellazzini","first_name":"Ronaldo","full_name":"Bellazzini, Ronaldo"},{"first_name":"Stefano","last_name":"Bianchi","full_name":"Bianchi, Stefano"},{"full_name":"Bongiorno, Stephen D.","first_name":"Stephen D.","last_name":"Bongiorno"},{"last_name":"Bonino","first_name":"Raffaella","full_name":"Bonino, Raffaella"},{"first_name":"Alessandro","last_name":"Brez","full_name":"Brez, Alessandro"},{"full_name":"Bucciantini, Niccolò","first_name":"Niccolò","last_name":"Bucciantini"},{"full_name":"Capitanio, Fiamma","first_name":"Fiamma","last_name":"Capitanio"},{"last_name":"Castellano","first_name":"Simone","full_name":"Castellano, Simone"},{"full_name":"Cavazzuti, Elisabetta","last_name":"Cavazzuti","first_name":"Elisabetta"},{"last_name":"Chen","first_name":"Chien-Ting","full_name":"Chen, Chien-Ting"},{"first_name":"Stefano","last_name":"Ciprini","full_name":"Ciprini, Stefano"},{"full_name":"Costa, Enrico","first_name":"Enrico","last_name":"Costa"},{"last_name":"De Rosa","first_name":"Alessandra","full_name":"De Rosa, Alessandra"},{"last_name":"Del Monte","first_name":"Ettore","full_name":"Del Monte, Ettore"},{"last_name":"Di Gesu","first_name":"Laura","full_name":"Di Gesu, Laura"},{"full_name":"Di Lalla, Niccolò","last_name":"Di Lalla","first_name":"Niccolò"},{"last_name":"Di Marco","first_name":"Alessandro","full_name":"Di Marco, Alessandro"},{"first_name":"Immacolata","last_name":"Donnarumma","full_name":"Donnarumma, Immacolata"},{"full_name":"Dovčiak, Michal","last_name":"Dovčiak","first_name":"Michal"},{"full_name":"Ehlert, Steven R.","first_name":"Steven R.","last_name":"Ehlert"},{"full_name":"Enoto, Teruaki","last_name":"Enoto","first_name":"Teruaki"},{"first_name":"Yuri","last_name":"Evangelista","full_name":"Evangelista, Yuri"},{"full_name":"Fabiani, Sergio","last_name":"Fabiani","first_name":"Sergio"},{"first_name":"Riccardo","last_name":"Ferrazzoli","full_name":"Ferrazzoli, Riccardo"},{"last_name":"Garcia","first_name":"Javier A.","full_name":"Garcia, Javier A."},{"full_name":"Gunji, Shuichi","last_name":"Gunji","first_name":"Shuichi"},{"full_name":"Hayashida, Kiyoshi","last_name":"Hayashida","first_name":"Kiyoshi"},{"last_name":"Iwakiri","first_name":"Wataru","full_name":"Iwakiri, Wataru"},{"full_name":"Jorstad, Svetlana G.","last_name":"Jorstad","first_name":"Svetlana G."},{"full_name":"Kaaret, Philip","last_name":"Kaaret","first_name":"Philip"},{"full_name":"Karas, Vladimir","last_name":"Karas","first_name":"Vladimir"},{"full_name":"Kislat, Fabian","first_name":"Fabian","last_name":"Kislat"},{"full_name":"Kitaguchi, Takao","first_name":"Takao","last_name":"Kitaguchi"},{"first_name":"Jeffery J.","last_name":"Kolodziejczak","full_name":"Kolodziejczak, Jeffery J."},{"last_name":"Krawczynski","first_name":"Henric","full_name":"Krawczynski, Henric"},{"full_name":"La Monaca, Fabio","first_name":"Fabio","last_name":"La Monaca"},{"full_name":"Latronico, Luca","last_name":"Latronico","first_name":"Luca"},{"last_name":"Liodakis","first_name":"Ioannis","full_name":"Liodakis, Ioannis"},{"last_name":"Maldera","first_name":"Simone","full_name":"Maldera, Simone"},{"last_name":"Manfreda","first_name":"Alberto","full_name":"Manfreda, Alberto"},{"last_name":"Marin","first_name":"Frédéric","full_name":"Marin, Frédéric"},{"first_name":"Andrea","last_name":"Marinucci","full_name":"Marinucci, Andrea"},{"full_name":"Marscher, Alan P.","last_name":"Marscher","first_name":"Alan P."},{"first_name":"Herman L.","last_name":"Marshall","full_name":"Marshall, Herman L."},{"full_name":"Massaro, Francesco","first_name":"Francesco","last_name":"Massaro"},{"full_name":"Matt, Giorgio","last_name":"Matt","first_name":"Giorgio"},{"first_name":"Ikuyuki","last_name":"Mitsuishi","full_name":"Mitsuishi, Ikuyuki"},{"last_name":"Mizuno","first_name":"Tsunefumi","full_name":"Mizuno, Tsunefumi"},{"full_name":"Muleri, Fabio","first_name":"Fabio","last_name":"Muleri"},{"full_name":"Negro, Michela","last_name":"Negro","first_name":"Michela"},{"last_name":"Ng","first_name":"C.-Y.","full_name":"Ng, C.-Y."},{"full_name":"O’Dell, Stephen L.","last_name":"O’Dell","first_name":"Stephen L."},{"first_name":"Nicola","last_name":"Omodei","full_name":"Omodei, Nicola"},{"last_name":"Oppedisano","first_name":"Chiara","full_name":"Oppedisano, Chiara"},{"last_name":"Papitto","first_name":"Alessandro","full_name":"Papitto, Alessandro"},{"full_name":"Peirson, Abel Lawrence","first_name":"Abel Lawrence","last_name":"Peirson"},{"first_name":"Matteo","last_name":"Perri","full_name":"Perri, Matteo"},{"first_name":"Melissa","last_name":"Pesce-Rollins","full_name":"Pesce-Rollins, Melissa"},{"full_name":"Petrucci, Pierre-Olivier","first_name":"Pierre-Olivier","last_name":"Petrucci"},{"first_name":"Maura","last_name":"Pilia","full_name":"Pilia, Maura"},{"full_name":"Possenti, Andrea","first_name":"Andrea","last_name":"Possenti"},{"last_name":"Puccetti","first_name":"Simonetta","full_name":"Puccetti, Simonetta"},{"first_name":"Brian D.","last_name":"Ramsey","full_name":"Ramsey, Brian D."},{"first_name":"John","last_name":"Rankin","full_name":"Rankin, John"},{"full_name":"Ratheesh, Ajay","first_name":"Ajay","last_name":"Ratheesh"},{"full_name":"Roberts, Oliver J.","last_name":"Roberts","first_name":"Oliver J."},{"full_name":"Romani, Roger W.","last_name":"Romani","first_name":"Roger W."},{"last_name":"Sgrò","first_name":"Carmelo","full_name":"Sgrò, Carmelo"},{"full_name":"Slane, Patrick","first_name":"Patrick","last_name":"Slane"},{"full_name":"Soffitta, Paolo","last_name":"Soffitta","first_name":"Paolo"},{"first_name":"Gloria","last_name":"Spandre","full_name":"Spandre, Gloria"},{"last_name":"Swartz","first_name":"Douglas A.","full_name":"Swartz, Douglas A."},{"full_name":"Tamagawa, Toru","last_name":"Tamagawa","first_name":"Toru"},{"full_name":"Tavecchio, Fabrizio","last_name":"Tavecchio","first_name":"Fabrizio"},{"first_name":"Roberto","last_name":"Taverna","full_name":"Taverna, Roberto"},{"first_name":"Yuzuru","last_name":"Tawara","full_name":"Tawara, Yuzuru"},{"full_name":"Tennant, Allyn F.","last_name":"Tennant","first_name":"Allyn F."},{"full_name":"Thomas, Nicholas E.","first_name":"Nicholas E.","last_name":"Thomas"},{"last_name":"Tombesi","first_name":"Francesco","full_name":"Tombesi, Francesco"},{"full_name":"Trois, Alessio","last_name":"Trois","first_name":"Alessio"},{"full_name":"Turolla, Roberto","first_name":"Roberto","last_name":"Turolla"},{"first_name":"Jacco","last_name":"Vink","full_name":"Vink, Jacco"},{"full_name":"Weisskopf, Martin C.","last_name":"Weisskopf","first_name":"Martin C."},{"first_name":"Kinwah","last_name":"Wu","full_name":"Wu, Kinwah"},{"full_name":"Xie, Fei","first_name":"Fei","last_name":"Xie"},{"full_name":"Zane, Silvia","last_name":"Zane","first_name":"Silvia"}],"_id":"18867","language":[{"iso":"eng"}],"date_created":"2025-01-21T15:35:17Z","OA_type":"closed access","article_processing_charge":"No","month":"08","publication_identifier":{"issn":["2397-3366"]},"doi":"10.1038/s41550-024-02295-8","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","abstract":[{"text":"In an accreting X-ray pulsar, a neutron star accretes matter from a companion star through an accretion disk. The magnetic field of the rotating neutron star disrupts the inner edge of the disk, funnelling the gas to flow onto the poles on its surface. Hercules X-1 is a prototypical persistent X-ray pulsar about 7 kpc from Earth. Its emission varies on three distinct timescales: the neutron star rotates every 1.2 s, it is eclipsed by its companion each 1.7 d, and the system exhibits a superorbital period of 35 d, which has remained stable since its discovery. Several lines of evidence point to the source of this variation as the precession of the accretion disk or that of the neutron star. Despite the many hints over the past 50 yr, the precession of the neutron star itself has yet not been confirmed or refuted. X-ray polarization measurements (probing the spin geometry of Her X-1) with the Imaging X-ray Polarimetry Explorer suggest that free precession of the neutron star crust sets the 35 d period; this has the important implication that its crust is somewhat asymmetric by a few parts per ten million.","lang":"eng"}],"page":"1047-1053","publication_status":"published","extern":"1","article_type":"original","title":"Complex rotational dynamics of the neutron star in Hercules X-1 revealed by X-ray polarization","date_published":"2024-08-01T00:00:00Z","volume":8,"year":"2024","status":"public","publication":"Nature Astronomy"},{"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","doi":"10.1038/s41550-022-01799-5","month":"10","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2206.07138"}],"date_published":"2022-10-22T00:00:00Z","status":"public","extern":"1","abstract":[{"lang":"eng","text":"Using observations of X-ray pulsar Hercules X-1 by the Imaging X-ray Polarimetry Explorer we report a highly significant (>17σ) detection of the polarization signal from an accreting neutron star. The observed degree of linear polarization of ~10% is far below theoretical expectations for this object, and stays low throughout the spin cycle of the pulsar. Both the degree and angle of polarization exhibit variability with the pulse phase, allowing us to measure the pulsar spin position angle 57(2) deg and the magnetic obliquity 12(4) deg, which is an essential step towards detailed modelling of the intrinsic emission of X-ray pulsars. Combining our results with the optical polarimetric data, we find that the spin axis of the neutron star and the angular momentum of the binary orbit are misaligned by at least ~20 deg, which is a strong argument in support of the models explaining the stability of the observed superorbital variability with the precession of the neutron star."}],"publication_status":"published","day":"22","oa":1,"language":[{"iso":"eng"}],"date_updated":"2024-04-02T07:16:54Z","oa_version":"Preprint","issue":"12","arxiv":1,"article_processing_charge":"No","date_created":"2024-03-26T09:51:04Z","publication_identifier":{"issn":["2397-3366"]},"volume":6,"title":"Determination of X-ray pulsar geometry with IXPE polarimetry","external_id":{"arxiv":["2206.07138"]},"article_type":"original","publication":"Nature Astronomy","year":"2022","page":"1433-1443","type":"journal_article","intvolume":"         6","publisher":"Springer Nature","_id":"15204","author":[{"last_name":"Doroshenko","first_name":"Victor","full_name":"Doroshenko, Victor"},{"first_name":"Juri","last_name":"Poutanen","full_name":"Poutanen, Juri"},{"full_name":"Tsygankov, Sergey S.","first_name":"Sergey S.","last_name":"Tsygankov"},{"full_name":"Suleimanov, Valery F.","first_name":"Valery F.","last_name":"Suleimanov"},{"full_name":"Bachetti, Matteo","first_name":"Matteo","last_name":"Bachetti"},{"first_name":"Ilaria","last_name":"Caiazzo","id":"8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d","orcid":"0000-0002-4770-5388","full_name":"Caiazzo, Ilaria"},{"full_name":"Costa, Enrico","last_name":"Costa","first_name":"Enrico"},{"full_name":"Di Marco, Alessandro","first_name":"Alessandro","last_name":"Di Marco"},{"first_name":"Jeremy","last_name":"Heyl","full_name":"Heyl, Jeremy"},{"full_name":"La Monaca, Fabio","first_name":"Fabio","last_name":"La Monaca"},{"full_name":"Muleri, Fabio","first_name":"Fabio","last_name":"Muleri"},{"last_name":"Mushtukov","first_name":"Alexander A.","full_name":"Mushtukov, Alexander A."},{"last_name":"Pavlov","first_name":"George G.","full_name":"Pavlov, George G."},{"last_name":"Ramsey","first_name":"Brian D.","full_name":"Ramsey, Brian D."},{"full_name":"Rankin, John","first_name":"John","last_name":"Rankin"},{"first_name":"Andrea","last_name":"Santangelo","full_name":"Santangelo, Andrea"},{"first_name":"Paolo","last_name":"Soffitta","full_name":"Soffitta, Paolo"},{"full_name":"Staubert, Rüdiger","last_name":"Staubert","first_name":"Rüdiger"},{"full_name":"Weisskopf, Martin C.","last_name":"Weisskopf","first_name":"Martin C."},{"full_name":"Zane, Silvia","last_name":"Zane","first_name":"Silvia"},{"first_name":"Iván","last_name":"Agudo","full_name":"Agudo, Iván"},{"last_name":"Antonelli","first_name":"Lucio A.","full_name":"Antonelli, Lucio A."},{"first_name":"Luca","last_name":"Baldini","full_name":"Baldini, Luca"},{"first_name":"Wayne H.","last_name":"Baumgartner","full_name":"Baumgartner, Wayne H."},{"last_name":"Bellazzini","first_name":"Ronaldo","full_name":"Bellazzini, Ronaldo"},{"first_name":"Stefano","last_name":"Bianchi","full_name":"Bianchi, Stefano"},{"first_name":"Stephen D.","last_name":"Bongiorno","full_name":"Bongiorno, Stephen D."},{"full_name":"Bonino, Raffaella","last_name":"Bonino","first_name":"Raffaella"},{"full_name":"Brez, Alessandro","first_name":"Alessandro","last_name":"Brez"},{"first_name":"Niccolò","last_name":"Bucciantini","full_name":"Bucciantini, Niccolò"},{"full_name":"Capitanio, Fiamma","last_name":"Capitanio","first_name":"Fiamma"},{"full_name":"Castellano, Simone","first_name":"Simone","last_name":"Castellano"},{"first_name":"Elisabetta","last_name":"Cavazzuti","full_name":"Cavazzuti, Elisabetta"},{"full_name":"Ciprini, Stefano","first_name":"Stefano","last_name":"Ciprini"},{"full_name":"De Rosa, Alessandra","first_name":"Alessandra","last_name":"De 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Kiyoshi","last_name":"Hayashida","first_name":"Kiyoshi"},{"first_name":"Wataru","last_name":"Iwakiri","full_name":"Iwakiri, Wataru"},{"first_name":"Svetlana G.","last_name":"Jorstad","full_name":"Jorstad, Svetlana G."},{"full_name":"Karas, Vladimir","first_name":"Vladimir","last_name":"Karas"},{"full_name":"Kitaguchi, Takao","last_name":"Kitaguchi","first_name":"Takao"},{"full_name":"Kolodziejczak, Jeffery J.","last_name":"Kolodziejczak","first_name":"Jeffery J."},{"last_name":"Krawczynski","first_name":"Henric","full_name":"Krawczynski, Henric"},{"full_name":"Latronico, Luca","first_name":"Luca","last_name":"Latronico"},{"full_name":"Liodakis, Ioannis","last_name":"Liodakis","first_name":"Ioannis"},{"first_name":"Simone","last_name":"Maldera","full_name":"Maldera, Simone"},{"first_name":"Alberto","last_name":"Manfreda","full_name":"Manfreda, Alberto"},{"full_name":"Marin, Frédéric","first_name":"Frédéric","last_name":"Marin"},{"first_name":"Andrea","last_name":"Marinucci","full_name":"Marinucci, Andrea"},{"full_name":"Marscher, Alan P.","last_name":"Marscher","first_name":"Alan P."},{"last_name":"Marshall","first_name":"Herman L.","full_name":"Marshall, Herman L."},{"last_name":"Matt","first_name":"Giorgio","full_name":"Matt, Giorgio"},{"first_name":"Ikuyuki","last_name":"Mitsuishi","full_name":"Mitsuishi, Ikuyuki"},{"full_name":"Mizuno, Tsunefumi","first_name":"Tsunefumi","last_name":"Mizuno"},{"full_name":"Ng, Chi-Yung","first_name":"Chi-Yung","last_name":"Ng"},{"full_name":"O’Dell, Stephen L.","last_name":"O’Dell","first_name":"Stephen L."},{"full_name":"Omodei, Nicola","last_name":"Omodei","first_name":"Nicola"},{"full_name":"Oppedisano, Chiara","first_name":"Chiara","last_name":"Oppedisano"},{"full_name":"Papitto, Alessandro","last_name":"Papitto","first_name":"Alessandro"},{"first_name":"Abel L.","last_name":"Peirson","full_name":"Peirson, Abel L."},{"first_name":"Matteo","last_name":"Perri","full_name":"Perri, Matteo"},{"full_name":"Pesce-Rollins, Melissa","last_name":"Pesce-Rollins","first_name":"Melissa"},{"first_name":"Maura","last_name":"Pilia","full_name":"Pilia, Maura"},{"full_name":"Possenti, Andrea","last_name":"Possenti","first_name":"Andrea"},{"full_name":"Puccetti, Simonetta","last_name":"Puccetti","first_name":"Simonetta"},{"last_name":"Ratheesh","first_name":"Ajay","full_name":"Ratheesh, Ajay"},{"full_name":"Romani, Roger W.","first_name":"Roger W.","last_name":"Romani"},{"full_name":"Sgrò, Carmelo","first_name":"Carmelo","last_name":"Sgrò"},{"full_name":"Slane, Patrick","first_name":"Patrick","last_name":"Slane"},{"full_name":"Spandre, Gloria","last_name":"Spandre","first_name":"Gloria"},{"last_name":"Sunyaev","first_name":"Rashid A.","full_name":"Sunyaev, Rashid A."},{"first_name":"Toru","last_name":"Tamagawa","full_name":"Tamagawa, Toru"},{"full_name":"Tavecchio, Fabrizio","last_name":"Tavecchio","first_name":"Fabrizio"},{"last_name":"Taverna","first_name":"Roberto","full_name":"Taverna, Roberto"},{"last_name":"Tawara","first_name":"Yuzuru","full_name":"Tawara, Yuzuru"},{"full_name":"Tennant, Allyn F.","first_name":"Allyn F.","last_name":"Tennant"},{"full_name":"Thomas, Nicolas E.","last_name":"Thomas","first_name":"Nicolas E."},{"full_name":"Tombesi, Francesco","last_name":"Tombesi","first_name":"Francesco"},{"first_name":"Alessio","last_name":"Trois","full_name":"Trois, Alessio"},{"full_name":"Turolla, Roberto","first_name":"Roberto","last_name":"Turolla"},{"first_name":"Jacco","last_name":"Vink","full_name":"Vink, Jacco"},{"first_name":"Kinwah","last_name":"Wu","full_name":"Wu, Kinwah"},{"full_name":"Xie, Fei","first_name":"Fei","last_name":"Xie"}],"quality_controlled":"1","scopus_import":"1","keyword":["Astronomy and Astrophysics"],"citation":{"ama":"Doroshenko V, Poutanen J, Tsygankov SS, et al. Determination of X-ray pulsar geometry with IXPE polarimetry. <i>Nature Astronomy</i>. 2022;6(12):1433-1443. doi:<a href=\"https://doi.org/10.1038/s41550-022-01799-5\">10.1038/s41550-022-01799-5</a>","mla":"Doroshenko, Victor, et al. “Determination of X-Ray Pulsar Geometry with IXPE Polarimetry.” <i>Nature Astronomy</i>, vol. 6, no. 12, Springer Nature, 2022, pp. 1433–43, doi:<a href=\"https://doi.org/10.1038/s41550-022-01799-5\">10.1038/s41550-022-01799-5</a>.","ieee":"V. Doroshenko <i>et al.</i>, “Determination of X-ray pulsar geometry with IXPE polarimetry,” <i>Nature Astronomy</i>, vol. 6, no. 12. Springer Nature, pp. 1433–1443, 2022.","ista":"Doroshenko V, Poutanen J, Tsygankov SS, Suleimanov VF, Bachetti M, Caiazzo I, Costa E, Di Marco A, Heyl J, La Monaca F, Muleri F, Mushtukov AA, Pavlov GG, Ramsey BD, Rankin J, Santangelo A, Soffitta P, Staubert R, Weisskopf MC, Zane S, Agudo I, Antonelli LA, Baldini L, Baumgartner WH, Bellazzini R, Bianchi S, Bongiorno SD, Bonino R, Brez A, Bucciantini N, Capitanio F, Castellano S, Cavazzuti E, Ciprini S, De Rosa A, Del Monte E, Di Gesu L, Di Lalla N, Donnarumma I, Dovčiak M, Ehlert SR, Enoto T, Evangelista Y, Fabiani S, Ferrazzoli R, Garcia JA, Gunji S, Hayashida K, Iwakiri W, Jorstad SG, Karas V, Kitaguchi T, Kolodziejczak JJ, Krawczynski H, Latronico L, Liodakis I, Maldera S, Manfreda A, Marin F, Marinucci A, Marscher AP, Marshall HL, Matt G, Mitsuishi I, Mizuno T, Ng C-Y, O’Dell SL, Omodei N, Oppedisano C, Papitto A, Peirson AL, Perri M, Pesce-Rollins M, Pilia M, Possenti A, Puccetti S, Ratheesh A, Romani RW, Sgrò C, Slane P, Spandre G, Sunyaev RA, Tamagawa T, Tavecchio F, Taverna R, Tawara Y, Tennant AF, Thomas NE, Tombesi F, Trois A, Turolla R, Vink J, Wu K, Xie F. 2022. Determination of X-ray pulsar geometry with IXPE polarimetry. Nature Astronomy. 6(12), 1433–1443.","chicago":"Doroshenko, Victor, Juri Poutanen, Sergey S. Tsygankov, Valery F. Suleimanov, Matteo Bachetti, Ilaria Caiazzo, Enrico Costa, et al. “Determination of X-Ray Pulsar Geometry with IXPE Polarimetry.” <i>Nature Astronomy</i>. Springer Nature, 2022. <a href=\"https://doi.org/10.1038/s41550-022-01799-5\">https://doi.org/10.1038/s41550-022-01799-5</a>.","short":"V. Doroshenko, J. Poutanen, S.S. Tsygankov, V.F. Suleimanov, M. Bachetti, I. Caiazzo, E. Costa, A. Di Marco, J. Heyl, F. La Monaca, F. Muleri, A.A. Mushtukov, G.G. Pavlov, B.D. Ramsey, J. Rankin, A. Santangelo, P. Soffitta, R. Staubert, M.C. Weisskopf, S. Zane, I. Agudo, L.A. Antonelli, L. Baldini, W.H. Baumgartner, R. Bellazzini, S. Bianchi, S.D. Bongiorno, R. Bonino, A. Brez, N. Bucciantini, F. Capitanio, S. Castellano, E. Cavazzuti, S. Ciprini, A. De Rosa, E. Del Monte, L. Di Gesu, N. Di Lalla, I. Donnarumma, M. Dovčiak, S.R. Ehlert, T. Enoto, Y. Evangelista, S. Fabiani, R. Ferrazzoli, J.A. Garcia, S. Gunji, K. Hayashida, W. Iwakiri, S.G. Jorstad, V. Karas, T. Kitaguchi, J.J. Kolodziejczak, H. Krawczynski, L. Latronico, I. Liodakis, S. Maldera, A. Manfreda, F. Marin, A. Marinucci, A.P. Marscher, H.L. Marshall, G. Matt, I. Mitsuishi, T. Mizuno, C.-Y. Ng, S.L. O’Dell, N. Omodei, C. Oppedisano, A. Papitto, A.L. Peirson, M. Perri, M. Pesce-Rollins, M. Pilia, A. Possenti, S. Puccetti, A. Ratheesh, R.W. Romani, C. Sgrò, P. Slane, G. Spandre, R.A. Sunyaev, T. Tamagawa, F. Tavecchio, R. Taverna, Y. Tawara, A.F. Tennant, N.E. Thomas, F. Tombesi, A. Trois, R. Turolla, J. Vink, K. Wu, F. Xie, Nature Astronomy 6 (2022) 1433–1443.","apa":"Doroshenko, V., Poutanen, J., Tsygankov, S. S., Suleimanov, V. F., Bachetti, M., Caiazzo, I., … Xie, F. (2022). Determination of X-ray pulsar geometry with IXPE polarimetry. <i>Nature Astronomy</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41550-022-01799-5\">https://doi.org/10.1038/s41550-022-01799-5</a>"}},{"abstract":[{"text":"Large cosmological datasets have been probing the properties of our Universe and constraining the parameters of dark matter and dark energy with increasing precision. Deep learning techniques have shown potential to be smarter than — and greatly outperform — human-designed statistics.","lang":"eng"}],"publication_status":"published","extern":"1","date_published":"2018-10-29T00:00:00Z","status":"public","month":"10","main_file_link":[{"url":"https://doi.org/10.1038/s41550-018-0623-9"}],"doi":"10.1038/s41550-018-0623-9","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","issue":"1","date_updated":"2024-09-18T08:51:45Z","oa_version":"None","language":[{"iso":"eng"}],"day":"29","page":"18-19","title":"Learning from the machine","article_type":"original","volume":3,"year":"2018","publication":"Nature Astronomy","date_created":"2024-09-05T10:01:23Z","article_processing_charge":"No","publication_identifier":{"issn":["2397-3366"]},"scopus_import":"1","quality_controlled":"1","citation":{"chicago":"Haiman, Zoltán. “Learning from the Machine.” <i>Nature Astronomy</i>. Springer Science and Business Media LLC, 2018. <a href=\"https://doi.org/10.1038/s41550-018-0623-9\">https://doi.org/10.1038/s41550-018-0623-9</a>.","apa":"Haiman, Z. (2018). Learning from the machine. <i>Nature Astronomy</i>. Springer Science and Business Media LLC. <a href=\"https://doi.org/10.1038/s41550-018-0623-9\">https://doi.org/10.1038/s41550-018-0623-9</a>","short":"Z. Haiman, Nature Astronomy 3 (2018) 18–19.","ama":"Haiman Z. Learning from the machine. <i>Nature Astronomy</i>. 2018;3(1):18-19. doi:<a href=\"https://doi.org/10.1038/s41550-018-0623-9\">10.1038/s41550-018-0623-9</a>","ieee":"Z. Haiman, “Learning from the machine,” <i>Nature Astronomy</i>, vol. 3, no. 1. Springer Science and Business Media LLC, pp. 18–19, 2018.","mla":"Haiman, Zoltán. “Learning from the Machine.” <i>Nature Astronomy</i>, vol. 3, no. 1, Springer Science and Business Media LLC, 2018, pp. 18–19, doi:<a href=\"https://doi.org/10.1038/s41550-018-0623-9\">10.1038/s41550-018-0623-9</a>.","ista":"Haiman Z. 2018. Learning from the machine. Nature Astronomy. 3(1), 18–19."},"author":[{"first_name":"Zoltán","id":"7c006e8c-cc0d-11ee-8322-cb904ef76f36","last_name":"Haiman","full_name":"Haiman, Zoltán"}],"_id":"17544","intvolume":"         3","publisher":"Springer Science and Business Media LLC","type":"journal_article"},{"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","doi":"10.1038/s41550-017-0075","month":"03","main_file_link":[{"open_access":"1","url":" https://doi.org/10.48550/arXiv.1703.03805"}],"date_published":"2017-03-13T00:00:00Z","status":"public","extern":"1","publication_status":"published","abstract":[{"lang":"eng","text":"The Direct Collapse Black Hole (DCBH) scenario provides a solution for forming the massive black holes powering bright quasars observed in the early Universe. A prerequisite for forming a DCBH is that the formation of (much less massive) Population III stars be avoided - this can be achieved by destroying H2 via Lyman-Werner (LW) radiation (ELW = 12.6 eV). We find that two conditions must be met in the proto-galaxy that will host the DCBH. First, prior star formation must be delayed; this can be achieved with a background LW flux of JBG≳100 J21. Second, an intense burst of LW radiation from a neighbouring star-bursting proto-galaxy is required, just before the gas cloud undergoes gravitational collapse, to finally suppress star formation completely. We show here for the first time using high-resolution hydrodynamical simulations, including full radiative transfer, that this low-level background, combined with tight synchronisation and irradiation of a secondary proto-galaxy by a primary proto-galaxy, inevitably moves the secondary proto-galaxy onto the isothermal atomic cooling track, without the deleterious effects of either photo-evaporating the gas or polluting it by heavy elements. These, atomically cooled, massive proto-galaxies are expected to ultimately form a DCBH of mass 104−105M⊙."}],"day":"13","language":[{"iso":"eng"}],"oa":1,"oa_version":"Preprint","date_updated":"2024-09-25T07:54:31Z","issue":"4","arxiv":1,"article_processing_charge":"No","date_created":"2024-09-06T07:45:20Z","publication_identifier":{"issn":["2397-3366"]},"volume":1,"external_id":{"arxiv":["1703.03805"]},"title":"Rapid formation of massive black holes in close proximity to embryonic protogalaxies","article_type":"original","publication":"Nature Astronomy","year":"2017","type":"journal_article","intvolume":"         1","publisher":"Springer Science and Business Media LLC","_id":"17667","author":[{"last_name":"Regan","first_name":"John A.","full_name":"Regan, John A."},{"last_name":"Visbal","first_name":"Eli","full_name":"Visbal, Eli"},{"full_name":"Wise, John H.","first_name":"John H.","last_name":"Wise"},{"first_name":"Zoltán","id":"7c006e8c-cc0d-11ee-8322-cb904ef76f36","last_name":"Haiman","full_name":"Haiman, Zoltán"},{"first_name":"Peter H.","last_name":"Johansson","full_name":"Johansson, Peter H."},{"last_name":"Bryan","first_name":"Greg L.","full_name":"Bryan, Greg L."}],"article_number":"0075","scopus_import":"1","quality_controlled":"1","citation":{"chicago":"Regan, John A., Eli Visbal, John H. Wise, Zoltán Haiman, Peter H. Johansson, and Greg L. Bryan. “Rapid Formation of Massive Black Holes in Close Proximity to Embryonic Protogalaxies.” <i>Nature Astronomy</i>. Springer Science and Business Media LLC, 2017. <a href=\"https://doi.org/10.1038/s41550-017-0075\">https://doi.org/10.1038/s41550-017-0075</a>.","short":"J.A. Regan, E. Visbal, J.H. Wise, Z. Haiman, P.H. Johansson, G.L. Bryan, Nature Astronomy 1 (2017).","apa":"Regan, J. A., Visbal, E., Wise, J. H., Haiman, Z., Johansson, P. H., &#38; Bryan, G. L. (2017). Rapid formation of massive black holes in close proximity to embryonic protogalaxies. <i>Nature Astronomy</i>. Springer Science and Business Media LLC. <a href=\"https://doi.org/10.1038/s41550-017-0075\">https://doi.org/10.1038/s41550-017-0075</a>","ama":"Regan JA, Visbal E, Wise JH, Haiman Z, Johansson PH, Bryan GL. Rapid formation of massive black holes in close proximity to embryonic protogalaxies. <i>Nature Astronomy</i>. 2017;1(4). doi:<a href=\"https://doi.org/10.1038/s41550-017-0075\">10.1038/s41550-017-0075</a>","ista":"Regan JA, Visbal E, Wise JH, Haiman Z, Johansson PH, Bryan GL. 2017. Rapid formation of massive black holes in close proximity to embryonic protogalaxies. Nature Astronomy. 1(4), 0075.","ieee":"J. A. Regan, E. Visbal, J. H. Wise, Z. Haiman, P. H. Johansson, and G. L. Bryan, “Rapid formation of massive black holes in close proximity to embryonic protogalaxies,” <i>Nature Astronomy</i>, vol. 1, no. 4. Springer Science and Business Media LLC, 2017.","mla":"Regan, John A., et al. “Rapid Formation of Massive Black Holes in Close Proximity to Embryonic Protogalaxies.” <i>Nature Astronomy</i>, vol. 1, no. 4, 0075, Springer Science and Business Media LLC, 2017, doi:<a href=\"https://doi.org/10.1038/s41550-017-0075\">10.1038/s41550-017-0075</a>."}}]