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J/ApJ/701/824    Afterglows of short and long-duration GRBs  (Nysewander+, 2009)
A comparison of the afterglows of short- and long-duration gamma-ray bursts.
    Nysewander M., Fruchter A.S., Pe'er A.
   <Astrophys. J., 701, 824-836 (2009)>
   =2009ApJ...701..824N
ADC_Keywords: Gamma rays ; X-ray sources ; Photometry

Keywords: gamma rays: bursts - radiation mechanisms: non-thermal


Abstract:
    We present a comparative study of the observed properties of the
    optical and X-ray afterglows of short- and long-duration γ-ray
    bursts (GRBs). Using a large sample of 37 short and 421 long GRBs, we
    find a strong correlation between the afterglow brightness measured
    after 11hr and the observed fluence of the prompt emission. Both the
    optical (R band) and X-ray flux densities (FR and FX) scale with
    the γ-ray fluence, Fγ. For bursts with a known redshift,
    a tight correlation exists between the afterglow flux densities at
    11hr (rest frame) and the total isotropic γ-ray energy,
    Eγ,ISO: FR,X∝Eγ,ISOα, with
    α∼1.

Description:
    In this study, we include GRBs detected by all satellites, beginning
    with GRB 970111, the first localization with follow-up observations
    capable of detecting an afterglow, and ending over a decade later,
    with GRB 071227.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       164       37   Observed prompt and afterglow properties of
                             short-duration GRBs
table2.dat       164      420   Observed prompt and afterglow properties of
                             long-duration GRBs
refs.dat         130      735   References


See also:
  J/ApJ/693/1484 : Early optical afterglow catalog (Cenko+, 2009)
  J/ApJ/686/1209 : Optical properties of GRB afterglows (Melandri+, 2008)
  J/AJ/133/1027  : Positions for 179 Swift X-ray afterglows (Butler+, 2007)
  J/A+A/455/813  : BeppoSAX catalog of GRB X-ray afterglows (De Pasquale+, 2006)


Byte-by-byte Description of file: table1.dat table2.dat

   Bytes Format Units   Label     Explanations

   1-  7  A7    ---     GRB       GRB designation
   9- 18  A10   ---     Sat       Satellite
  20- 21  I2    keV     LoCh      Lower energy channel
  23- 27  I5    keV     UpCh      Upper energy channel
  29- 34  F6.4  ---     z         ? Redshift
      35  A1    ---     f_z       [ab] Probable (a) or Cluster (b) redshift
  37- 44  F8.2 10-10J/m2 Flu      Fluence in 10-7erg/cm2
  46- 51  F6.2 10-10J/m2 E_Flu    ? Upper limit uncertainty in Flu
  53- 58  F6.2 10-10J/m2 e_Flu    ? Lower limit uncertainty in Flu
      60  A1    ---     l_logE    Limit flag on logE
  61- 65  F5.2  [10-7J] logE      ? Total isotropic γ-ray energy (erg)
  67- 70  F4.2  [10-7J] E_logE    ? Upper limit uncertainty in logE
  72- 75  F4.2  [10-7J] e_logE    ? Lower limit uncertainty in logE
      77  A1    ---     l_RFlux   Limit flag on RFlux
  78- 84  F7.1  uJy     RFlux     ? R band flux density 11 hours after the burst
  87- 92  F6.1  uJy     E_RFlux   ? Upper limit uncertainty in RFlux
  95- 99  F5.1  uJy     e_RFlux   ? Lower limit uncertainty in RFlux
     101  A1    ---     l_XFlux   Limit flag on XFlux
 102-108  F7.2 10-17W/m2 XFlux    ? The 0.2-10keV X-ray flux 11 hours after the
                                  burst (10-14erg/cm2/s)
 110-116  F7.2 10-17W/m2 E_XFlux  ? Upper limit uncertainty in XFlux
 118-124  F7.2 10-17W/m2 e_XFlux  ? Lower limit uncertainty in XFlux
 126-128  A3    ---     n_XFlux   [abcd, ] energy range of XFlux (2)
     130  A1    ---     l_FR/FX   Limit flag on FR/FX
 131-135  F5.2  ---     FR/FX     ? Ratio of R band to X-ray fluxes
 137-140  F4.2  ---     E_FR/FX   ? Upper limit uncertainty in FR/FX
 142-145  F4.2  ---     e_FR/FX   ? Lower limit uncertainty in FR/FX
 147-164  A18   ---     Ref       Reference(s) (see refs.dat file)

Note (2): Flag as follows:
    a = 1.6-10.0keV;
    b = 2-10keV;
    c = 0.5-6.0keV;
    d = Uses estimated NH.


Byte-by-byte Description of file: refs.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     Ref       Reference number
   5- 23  A19   ---     BibCode   Bibcode
  25-130  A106  ---     Comm      Authors and comment


History:
    From electronic version of the journal
(End)                 Greg Schwarz [AAS], Emmanuelle Perret [CDS]    08-Sep-2011