---
res:
  bibo_abstract:
  - Cosmological models that include suppression of the power spectrum of density
    fluctuations on small scales exhibit an exponential reduction of high-redshift,
    non-linear structures, including a reduction in the rate of gamma ray bursts (GRBs).
    Here we quantify the constraints that the detection of distant GRBs would place
    on structure formation models with reduced small-scale power. We compute the number
    of GRBs that could be detectable by the Swift satellite at high redshifts (z >
    6), assuming that the GRBs trace the cosmic star formation history, which itself
    traces the formation of non-linear structures. We calibrate simple models of the
    intrinsic luminosity function of the bursts to the number and flux distribution
    of GRBs observed by the Burst And Transient Source Experiment (BATSE). We find
    that a discovery of high-z GRBs would imply strong constraints on models with
    reduced small-scale power. For example, a single GRB at z > 10, or 10 GRBs at
    z > 5, discovered by Swift during its scheduled two-year mission, would rule out
    an exponential suppression of the power spectrum on scales below R_c=0.09 Mpc
    (exemplified by warm dark matter models with a particle mass of m_x=2 keV). Models
    with a less sharp suppression of small-scale power, such as those with a red tilt
    or a running scalar index, n_s, are more difficult to constrain, because they
    are more degenerate with an increase in the power spectrum normalization, sigma_8,
    and with models in which star-formation is allowed in low-mass minihalos. We find
    that a tilt of \delta n_s ~ 0.1 is difficult to detect; however, an observed rate
    of 1 GRB/yr at z > 12 would yield an upper limit on the running of the spectral
    index, alpha = d(n_s)/d(ln k) > -0.05.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Andrei
      foaf_name: Mesinger, Andrei
      foaf_surname: Mesinger
  - foaf_Person:
      foaf_givenName: Rosalba
      foaf_name: Perna, Rosalba
      foaf_surname: Perna
  - foaf_Person:
      foaf_givenName: Zoltán
      foaf_name: Haiman, Zoltán
      foaf_surname: Haiman
      foaf_workInfoHomepage: http://www.librecat.org/personId=7c006e8c-cc0d-11ee-8322-cb904ef76f36
  bibo_doi: 10.1086/428770
  bibo_issue: '1'
  bibo_volume: 623
  dct_date: 2005^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0004-637X
  - http://id.crossref.org/issn/1538-4357
  dct_language: eng
  dct_publisher: American Astronomical Society@
  dct_title: Constraints on the small‐scale power spectrum of density fluctuations
    from high‐redshift gamma‐ray bursts@
...