[{"date_published":"2020-12-19T00:00:00Z","day":"19","author":[{"full_name":"Bugnet, Lisa Annabelle","first_name":"Lisa Annabelle","id":"d9edb345-f866-11ec-9b37-d119b5234501","orcid":"0000-0003-0142-4000","last_name":"Bugnet"},{"full_name":"Prat, V.","first_name":"V.","last_name":"Prat"},{"first_name":"S.","full_name":"Mathis, S.","last_name":"Mathis"},{"last_name":"García","first_name":"R. A.","full_name":"García, R. A."},{"last_name":"Mathur","full_name":"Mathur, S.","first_name":"S."},{"last_name":"Augustson","full_name":"Augustson, K.","first_name":"K."},{"last_name":"Neiner","full_name":"Neiner, C.","first_name":"C."},{"full_name":"Thompson, M. J.","first_name":"M. J.","last_name":"Thompson"}],"article_processing_charge":"No","arxiv":1,"publication_status":"published","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2020","title":"The impact of a fossil magnetic field on dipolar mixed-mode frequencies in sub- and red-giant stars","doi":"10.1007/978-3-030-55336-4_33","quality_controlled":"1","editor":[{"last_name":"Monteiro","first_name":"Mario","full_name":"Monteiro, Mario"},{"first_name":"Rafael A","full_name":"Garcia, Rafael A","last_name":"Garcia"},{"first_name":"Jorgen","full_name":"Christensen-Dalsgaard, Jorgen","last_name":"Christensen-Dalsgaard"},{"last_name":"McIntosh","first_name":"Scott W","full_name":"McIntosh, Scott W"}],"publication":"Dynamics of the Sun and Stars","publisher":"Springer Nature","date_created":"2022-07-19T08:25:41Z","citation":{"short":"L.A. Bugnet, V. Prat, S. Mathis, R.A. García, S. Mathur, K. Augustson, C. Neiner, M.J. Thompson, in:, M. Monteiro, R.A. Garcia, J. Christensen-Dalsgaard, S.W. McIntosh (Eds.), Dynamics of the Sun and Stars, 1st ed., Springer Nature, Cham, 2020, pp. 251–257.","mla":"Bugnet, Lisa Annabelle, et al. “The Impact of a Fossil Magnetic Field on Dipolar Mixed-Mode Frequencies in Sub- and Red-Giant Stars.” <i>Dynamics of the Sun and Stars</i>, edited by Mario Monteiro et al., 1st ed., vol. 57, Springer Nature, 2020, pp. 251–57, doi:<a href=\"https://doi.org/10.1007/978-3-030-55336-4_33\">10.1007/978-3-030-55336-4_33</a>.","ieee":"L. A. Bugnet <i>et al.</i>, “The impact of a fossil magnetic field on dipolar mixed-mode frequencies in sub- and red-giant stars,” in <i>Dynamics of the Sun and Stars</i>, 1st ed., vol. 57, M. Monteiro, R. A. Garcia, J. Christensen-Dalsgaard, and S. W. McIntosh, Eds. Cham: Springer Nature, 2020, pp. 251–257.","ama":"Bugnet LA, Prat V, Mathis S, et al. The impact of a fossil magnetic field on dipolar mixed-mode frequencies in sub- and red-giant stars. In: Monteiro M, Garcia RA, Christensen-Dalsgaard J, McIntosh SW, eds. <i>Dynamics of the Sun and Stars</i>. Vol 57. 1st ed. ASSSP. Cham: Springer Nature; 2020:251-257. doi:<a href=\"https://doi.org/10.1007/978-3-030-55336-4_33\">10.1007/978-3-030-55336-4_33</a>","ista":"Bugnet LA, Prat V, Mathis S, García RA, Mathur S, Augustson K, Neiner C, Thompson MJ. 2020.The impact of a fossil magnetic field on dipolar mixed-mode frequencies in sub- and red-giant stars. In: Dynamics of the Sun and Stars. Astrophysics and Space Science Proceedings, vol. 57, 251–257.","apa":"Bugnet, L. A., Prat, V., Mathis, S., García, R. A., Mathur, S., Augustson, K., … Thompson, M. J. (2020). The impact of a fossil magnetic field on dipolar mixed-mode frequencies in sub- and red-giant stars. In M. Monteiro, R. A. Garcia, J. Christensen-Dalsgaard, &#38; S. W. McIntosh (Eds.), <i>Dynamics of the Sun and Stars</i> (1st ed., Vol. 57, pp. 251–257). Cham: Springer Nature. <a href=\"https://doi.org/10.1007/978-3-030-55336-4_33\">https://doi.org/10.1007/978-3-030-55336-4_33</a>","chicago":"Bugnet, Lisa Annabelle, V. Prat, S. Mathis, R. A. García, S. Mathur, K. Augustson, C. Neiner, and M. J. Thompson. “The Impact of a Fossil Magnetic Field on Dipolar Mixed-Mode Frequencies in Sub- and Red-Giant Stars.” In <i>Dynamics of the Sun and Stars</i>, edited by Mario Monteiro, Rafael A Garcia, Jorgen Christensen-Dalsgaard, and Scott W McIntosh, 1st ed., 57:251–57. ASSSP. Cham: Springer Nature, 2020. <a href=\"https://doi.org/10.1007/978-3-030-55336-4_33\">https://doi.org/10.1007/978-3-030-55336-4_33</a>."},"intvolume":"        57","page":"251-257","volume":57,"publication_identifier":{"eisbn":["978-3-030-55336-4"],"isbn":["978-3-030-55335-7"],"issn":["1570-6591"],"eissn":["1570-6605"]},"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2012.08684"}],"place":"Cham","oa":1,"date_updated":"2024-10-14T11:42:19Z","extern":"1","alternative_title":["Astrophysics and Space Science Proceedings"],"oa_version":"Preprint","acknowledgement":"The authors of this work acknowledge the support received from the PLATO CNES grant, the National Aeronautics and Space Administration under Grant NNX15AF13G, by the National Science Foundation grant AST-1411685, the Ramon y Cajal fellowship number RYC-2015-17697, the ERC SPIRE grant (647383), and the Fundation L’Oréal-Unesco-Académie des sciences.","status":"public","scopus_import":"1","type":"book_chapter","_id":"11622","abstract":[{"lang":"eng","text":"The recent discovery of low-amplitude dipolar oscillation mixed modes in massive red giants indicates the presence of a missing physical process inside their cores. Stars more massive than ∼ 1.3 M⊙ are known to develop a convective core during the main-sequence: the dynamo process triggered by this convection could be the origin of a strong magnetic field inside the core of the star, trapped when it becomes stably stratified and for the rest of its evolution. The presence of highly magnetized white dwarfs strengthens the hypothesis of buried fossil magnetic fields inside the core of evolved low-mass stars. If such a fossil field exists, it should affect the mixed modes of red giants as they are sensitive to processes affecting the deepest layers of these stars. The impact of a magnetic field on dipolar oscillations modes was one of Pr. Michael J. Thompson’s research topics during the 90s when preparing the helioseismic SoHO space mission. As the detection of gravity modes in the Sun is still controversial, the investigation of the solar oscillation modes did not provide any hint of the existence of a magnetic field in the solar radiative core. Today we have access to the core of evolved stars thanks to the asteroseismic observation of mixed modes from CoRoT, Kepler, K2 and TESS missions. The idea of applying and generalizing the work done for the Sun came from discussions with Pr. Michael Thompson in early 2018 before we lost him. Following the path we drew together, we theoretically investigate the effect of a stable axisymmetric mixed poloidal and toroidal magnetic field, aligned with the rotation axis of the star, on the mixed modes frequencies of a typical evolved low-mass star. This enables us to estimate the magnetic perturbations to the eigenfrequencies of mixed dipolar modes, depending on the magnetic field strength and the evolutionary state of the star. We conclude that strong magnetic fields of ∼ 1MG should perturb the mixed-mode frequency pattern enough for its effects to be detectable inside current asteroseismic data."}],"month":"12","series_title":"ASSSP","edition":"1","external_id":{"arxiv":["2012.08684"]},"language":[{"iso":"eng"}]},{"citation":{"ieee":"Z. Haiman, “Observing the first stars and black holes,” in <i>Astrophysics and Space Science Proceedings</i>, 2009, pp. 385–418.","ama":"Haiman Z. Observing the first stars and black holes. In: <i>Astrophysics and Space Science Proceedings</i>. Dordrecht: Springer Nature; 2009:385-418. doi:<a href=\"https://doi.org/10.1007/978-1-4020-9457-6_15\">10.1007/978-1-4020-9457-6_15</a>","ista":"Haiman Z. 2009. Observing the first stars and black holes. Astrophysics and Space Science Proceedings. , Astrophysics and Space Science Proceedings, , 385–418.","apa":"Haiman, Z. (2009). Observing the first stars and black holes. In <i>Astrophysics and Space Science Proceedings</i> (pp. 385–418). Dordrecht: Springer Nature. <a href=\"https://doi.org/10.1007/978-1-4020-9457-6_15\">https://doi.org/10.1007/978-1-4020-9457-6_15</a>","chicago":"Haiman, Zoltán. “Observing the First Stars and Black Holes.” In <i>Astrophysics and Space Science Proceedings</i>, 385–418. Dordrecht: Springer Nature, 2009. <a href=\"https://doi.org/10.1007/978-1-4020-9457-6_15\">https://doi.org/10.1007/978-1-4020-9457-6_15</a>.","short":"Z. Haiman, in:, Astrophysics and Space Science Proceedings, Springer Nature, Dordrecht, 2009, pp. 385–418.","mla":"Haiman, Zoltán. “Observing the First Stars and Black Holes.” <i>Astrophysics and Space Science Proceedings</i>, Springer Nature, 2009, pp. 385–418, doi:<a href=\"https://doi.org/10.1007/978-1-4020-9457-6_15\">10.1007/978-1-4020-9457-6_15</a>."},"date_created":"2025-01-03T12:09:18Z","publication":"Astrophysics and Space Science Proceedings","publisher":"Springer Nature","OA_type":"green","page":"385-418","publication_identifier":{"eissn":["1570-6605"],"eisbn":["9781402094576"],"issn":["1570-6591"],"isbn":["9781402094569"]},"main_file_link":[{"url":"https://arxiv.org/abs/0809.3926","open_access":"1"}],"place":"Dordrecht","date_updated":"2025-01-03T12:14:49Z","oa":1,"alternative_title":["Astrophysics and Space Science Proceedings"],"extern":"1","oa_version":"Preprint","status":"public","scopus_import":"1","type":"conference","abstract":[{"text":"The high sensitivity of JWST will open a new window on the end of the cosmological dark ages. Small stellar clusters, with a stellar mass of several × 106 M⊙, and low-mass black holes (BHs), with a mass of several $× 105 M⊙ should be directly detectable out to redshift z = 10, and individual supernovae (SNe) and gamma ray burst GRB afterglows are bright enough to be visible beyond this redshift. Dense primordial gas, in the process of collapsing from large scales to form protogalaxies, may also be possible to image through diffuse recombination line emission, possibly even before stars or BHs are formed. In this article, I discuss the key physical processes that are expected to have determined the sizes of the first star–clusters and black holes, and the prospect of studying these objects by direct detections with JWST and with other instruments. The direct light emitted by the very first stellar clusters and intermediate-mass black holes at z > 10 will likely fall below JWST’s detection threshold. However, JWST could reveal a decline at the faint-end of the high-redshift luminosity function, and thereby shed light on radiative and other feedback effects that operate at these early epochs. JWST will also have the sensitivity to detect individual SNe from beyond z = 10. In a dedicated survey lasting for several weeks, thousands of SNe could be detected at z > 6, with a redshift distribution extending to the formation of the very first stars at z ≳ 15. Using these SNe as tracers may be the only method to map out the earliest stages of the cosmic star–formation history. Finally, we point out that studying the earliest objects at high redshift will also offer a new window on the primordial power spectrum, on ∼100 times smaller scales than probed by current large-scale structure data.","lang":"eng"}],"_id":"18726","OA_place":"repository","month":"01","language":[{"iso":"eng"}],"external_id":{"arxiv":["0809.3926"]},"date_published":"2009-01-01T00:00:00Z","author":[{"full_name":"Haiman, Zoltán","first_name":"Zoltán","id":"7c006e8c-cc0d-11ee-8322-cb904ef76f36","orcid":"0000-0003-3633-5403","last_name":"Haiman"}],"day":"01","arxiv":1,"article_processing_charge":"No","publication_status":"published","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2009","title":"Observing the first stars and black holes","quality_controlled":"1","doi":"10.1007/978-1-4020-9457-6_15"},{"date_published":"2009-02-11T00:00:00Z","author":[{"full_name":"Haiman, Zoltán","first_name":"Zoltán","id":"7c006e8c-cc0d-11ee-8322-cb904ef76f36","orcid":"0000-0003-3633-5403","last_name":"Haiman"}],"day":"11","arxiv":1,"article_processing_charge":"No","publication_status":"published","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2009","title":"Observing the First Stars and Black Holes","quality_controlled":"1","doi":"10.1007/978-1-4020-9457-6_15","editor":[{"last_name":"Thronson","first_name":"Harley A.","full_name":"Thronson, Harley A."},{"last_name":"Stiavelli","full_name":"Stiavelli, Massimo","first_name":"Massimo"},{"last_name":"Tielens","first_name":"Alexander","full_name":"Tielens, Alexander"}],"date_created":"2025-01-03T12:29:16Z","citation":{"mla":"Haiman, Zoltán. “Observing the First Stars and Black Holes.” <i>Astrophysics in the Next Decade</i>, edited by Harley A. Thronson et al., Springer Nature, 2009, pp. 385–418, doi:<a href=\"https://doi.org/10.1007/978-1-4020-9457-6_15\">10.1007/978-1-4020-9457-6_15</a>.","short":"Z. Haiman, in:, H.A. Thronson, M. Stiavelli, A. Tielens (Eds.), Astrophysics in the Next Decade, Springer Nature, 2009, pp. 385–418.","ista":"Haiman Z. 2009.Observing the First Stars and Black Holes. In: Astrophysics in the Next Decade. Astrophysics and Space Science Proceedings, , 385–418.","chicago":"Haiman, Zoltán. “Observing the First Stars and Black Holes.” In <i>Astrophysics in the Next Decade</i>, edited by Harley A. Thronson, Massimo Stiavelli, and Alexander Tielens, 385–418. Springer Nature, 2009. <a href=\"https://doi.org/10.1007/978-1-4020-9457-6_15\">https://doi.org/10.1007/978-1-4020-9457-6_15</a>.","apa":"Haiman, Z. (2009). Observing the First Stars and Black Holes. In H. A. Thronson, M. Stiavelli, &#38; A. Tielens (Eds.), <i>Astrophysics in the Next Decade</i> (pp. 385–418). Springer Nature. <a href=\"https://doi.org/10.1007/978-1-4020-9457-6_15\">https://doi.org/10.1007/978-1-4020-9457-6_15</a>","ama":"Haiman Z. Observing the First Stars and Black Holes. In: Thronson HA, Stiavelli M, Tielens A, eds. <i>Astrophysics in the Next Decade</i>. Springer Nature; 2009:385-418. doi:<a href=\"https://doi.org/10.1007/978-1-4020-9457-6_15\">10.1007/978-1-4020-9457-6_15</a>","ieee":"Z. Haiman, “Observing the First Stars and Black Holes,” in <i>Astrophysics in the Next Decade</i>, H. A. Thronson, M. Stiavelli, and A. Tielens, Eds. Springer Nature, 2009, pp. 385–418."},"publication":"Astrophysics in the Next Decade","publisher":"Springer Nature","OA_type":"green","page":"385-418","publication_identifier":{"eissn":["1570-6605"],"eisbn":["9781402094576"],"isbn":["9781402094569"],"issn":["1570-6591"]},"main_file_link":[{"url":"https://arxiv.org/abs/0809.3926","open_access":"1"}],"date_updated":"2025-01-07T12:52:13Z","oa":1,"alternative_title":["Astrophysics and Space Science Proceedings"],"extern":"1","oa_version":"Preprint","status":"public","scopus_import":"1","type":"book_chapter","abstract":[{"text":"The high sensitivity of JWST will open a new window on the end of the cosmological dark ages. Small stellar clusters, with a stellar mass of several × 106 M⊙, and low-mass black holes (BHs), with a mass of several $× 105 M⊙ should be directly detectable out to redshift z = 10, and individual supernovae (SNe) and gamma ray burst GRB afterglows are bright enough to be visible beyond this redshift. Dense primordial gas, in the process of collapsing from large scales to form protogalaxies, may also be possible to image through diffuse recombination line emission, possibly even before stars or BHs are formed. In this article, I discuss the key physical processes that are expected to have determined the sizes of the first star–clusters and black holes, and the prospect of studying these objects by direct detections with JWST and with other instruments. The direct light emitted by the very first stellar clusters and intermediate-mass black holes at z > 10 will likely fall below JWST’s detection threshold. However, JWST could reveal a decline at the faint-end of the high-redshift luminosity function, and thereby shed light on radiative and other feedback effects that operate at these early epochs. JWST will also have the sensitivity to detect individual SNe from beyond z = 10. In a dedicated survey lasting for several weeks, thousands of SNe could be detected at z > 6, with a redshift distribution extending to the formation of the very first stars at z ≳ 15. Using these SNe as tracers may be the only method to map out the earliest stages of the cosmic star–formation history. Finally, we point out that studying the earliest objects at high redshift will also offer a new window on the primordial power spectrum, on ∼100 times smaller scales than probed by current large-scale structure data.","lang":"eng"}],"_id":"18735","OA_place":"repository","month":"02","language":[{"iso":"eng"}],"external_id":{"arxiv":["0809.3926"]}}]