Gamma-ray Burst 030501B

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN notice #2186
  K. Hurley, on behalf of the Ulysses GRB team,
  A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS GRB team, and
  E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team,report:
  Ulysses, INTEGRAL (SPI-ACS), and Konus-Wind observed this GRB at 04637 seconds. As observed by Ulysses, it had a duration of approximately 8 seconds, a 25-100 keV fluence of approximately 3.5E-06 erg/cm2, and a peak flux of approximately 7.6E-07 erg/cm2 s over 0.25 seconds.
  We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 332.708, -37.556 degrees, whose radius is 76.840 +/- 0.037 degrees (3 sigma ).
  This annulus may be constrained and/or improved, but as the event was not observed by Mars Odyssey, a small error box cannot be derived for it.
• GCN notice #2194
  S. Golenetskii, E. Mazets, V. Pal'shin, and D. Frederiks on behalf of Konus-Wind and Helicon/Coronas-F teams,
  T. Cline, on behalf of the Ulysses and Konus GRB teams,
  K. Hurley, on behalf of the Ulysses GRB team, and
  A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS GRB team, report:
  GRB030501B was detected by Konus-Wind at 01:17:21.824 UT and Helicon-Coronas-F at 01:17:20.607 UT.
  We have triangulated it to a preliminary annulus centered at

  RA(2000) = 224.210 deg,
  Decl(2000) = -21.142 deg,
  

  Radius = 81.01 +/- 0.68 degrees (3 sigma ). This annulus intersects the IPN annulus (GCN 2186) to form two error boxes, only one of which has the correct ecliptic latitude. Preliminary 3 sigma error box has approximate area of 400 sq. arcmin :

                          RA(2000)    Dec(2000)
  ERROR BOX CENTER:      290.651        28.413
  ERROR BOX CORNER 1:    291.282        28.814
  ERROR BOX CORNER 2:    289.984        28.071
  ERROR BOX CORNER 3:    290.026        28.007
  ERROR BOX CORNER 4:    291.324        28.750
  

• GCN notice #2199
  S. Golenetskii, E. Mazets, V. Pal'shin, and D. Frederiks on behalf of Konus-Wind and Helicon/Coronas-F teams report
  Data reported in GCN 2194 were affected by error in time delay.
  Correct Konus-Wind - Helicon annulus is:

  RA(2000) = 224.210 deg,
  Decl(2000) = -21.142 deg,
  

  Radius = 73.23 +/- 0.70 degrees (3 sigma ).
  This annulus intersects the IPN annulus (GCN 2186) to form two error boxes, only one of which has the correct ecliptic latitude. Preliminary 3 sigma error box has approximate area of 400 sq. arcmin :

                           RA(2000)    Dec(2000)
  ERROR BOX CENTER:      283.581        23.875
  ERROR BOX CORNER 1:    284.167        24.337
  ERROR BOX CORNER 2:    284.212        24.275
  ERROR BOX CORNER 3:    283.001        23.410
  ERROR BOX CORNER 4:    282.956        23.472
  

  Dmitry Frederiks [aka Fred]

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  Lab for High Energy Astrophysics, Space Research Dept,
  A.F.Ioffe Phys.-Tech. Institute, St.Petersburg, Russia
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