GRB 030519B
GCN Circular 2235
Subject
GRB030519B (=H2716): A Long, Bright GRB Localized by the HETE WXM
Date
2003-05-20T01:58:52Z (22 years ago)
From
Don Lamb at U.Chicago <lamb@oddjob.uchicago.edu>
D. Lamb, G. Ricker, J-L Atteia, N. Kawai, and S. Woosley on behalf of
the HETE Science Team;
J. Doty, R. Vanderspek, G. Crew, J. Villasenor, G. Monnelly, N. Butler,
T. Cline, J. G. Jernigan, A. Levine, F. Martel, E. Morgan, G. Prigozhin,
G. Azzibrouck, J. Braga, R. Manchanda, and G. Pizzichini, on behalf of
the HETE Operations and HETE Optical-SXC Teams;
Y. Shirasaki, C. Graziani, T. Donaghy, M. Matsuoka, M. Suzuki, T.
Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi,
T. Tavenner, Y. Nakagawa, D. Takahashi, R. Satoh, and Y. Urata, on
behalf of the HETE WXM Team;
M. Boer, J-F Olive, J-P Dezalay, C. Barraud and K. Hurley on behalf of
the HETE FREGATE Team;
write:
At 14:04:53.56 UTC (50693.56 UT) on 3 May 2003, the HETE FREGATE and
WXM instruments detected event H2716, a long, bright GRB.
The burst triggered FREGATE in the 30-400 keV energy band. The WXM
flight software detected the GRB and calculated a location, which was
reported in a GCN Notice at 14:05:30 UT. However, the direction of the
burst source was such that it illuminated only the Y-detector.
Consequently, the WXM flight localization was incorrect.
Ground analysis of the WXM data produced a localization that was
reported in a GCN Notice at 15:44:46 UT, 100 minutes after the burst.
The WXM ground localization SNR was 12. The localization can be
expressed as a 90% confidence rectangle which is 24 arcminutes in width
and 4.5 degrees in length. The coordinates of the center of the
rectangle are
WXM-Ground: R.A. = +15h 59m 02s, Dec. = -33d 29' 18" (J2000),
and the corners of the rectangle lie at:
R.A. = 16h 09m 54s, Dec. = -33d 16' 26",
R.A. = 16h 09m 41s, Dec. = -33d 33' 40",
R.A. = 15h 48m 24s, Dec. = -33d 24' 25",
R.A. = 15h 48m 08s, Dec. = -33d 42' 43" (J2000).
The width of the rectangle corresponds to the localization of the burst
in the Y-camera, and the length of the rectangle corresponds to the
the constraints on the X location of the burst deduced from the
illumination pattern on the wires of the Y-detector.
The T_90 duration of the burst in the 30-400 keV band was > 10 s.
A light curve and skymap for GRB030519B will soon be provided at the
following URL:
http://space.mit.edu/HETE/Bursts/GRB030519B
GCN Circular 2237
Subject
IPN triangulation of GRB030519B=H2716 (small error box)
Date
2003-05-20T16:32:42Z (22 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses and HETE GRB teams,
G. Ricker, J-L Atteia, N. Kawai, D. Lamb, S. Woosley, J. Doty, R. Vanderspek,
J. Villasenor, G. Crew, G. Monnelly, N. Butler, J.G. Jernigan, A. Levine,
F. Martel, E. Morgan, G. Prigozhin, J. Braga, R. Manchanda, G. Pizzichini,
Y. Shirasaki, C. Graziani, M. Matsuoka, T. Tamagawa, K. Torii,
T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi, T. Tavenner, T. Donaghy,
M. Boer, J-F Olive, and J-P Dezalay, on behalf of the HETE GRB team, and
D. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, C. Wiggger, W. Hajdas,
and A. Zehnder, on behalf of the RHESSI GRB team, report:
Ulysses and RHESSI also observed this burst (GCN 2235), As observed by
Ulysses, it had a duration of approximately 12 seconds, a 25-100 keV
fluence of approximately 2.9E-05 erg/cm2, and a peak flux of
approximately 4.3E-06 erg/cm2 s over 0.50 seconds.
We have triangulated it to a preliminary annulus centered at RA,
Decl(2000)= 331.653, -35.097 degrees, whose radius is 71.871 +/- 0.018
degrees (3 sigma). This annulus intersects the HETE WXM error box and
reduces its area to ~35 square arcminutes. The coordinates of the
IPN/WXM error box are:
ERROR BOX CENTER : 241.152 -33.473
ERROR BOX CORNER 1: 241.020 -33.623
ERROR BOX CORNER 2: 241.073 -33.621
ERROR BOX CORNER 3: 241.231 -33.325
ERROR BOX CORNER 4: 241.284 -33.323
This error box may be improved.
GCN Circular 2238
Subject
GRB030519B (=H2716): Peak Fluxes, Fluences, and Energy Spectrum
Date
2003-05-20T23:25:03Z (22 years ago)
From
Don Lamb at U.Chicago <lamb@oddjob.uchicago.edu>
D. Lamb, G. Ricker, J-L Atteia, N. Kawai, and S. Woosley on behalf of
the HETE Science Team;
C. Barraud, M. Boer, J-F Olive, J-P Dezalay, and K. Hurley on behalf of
the HETE FREGATE Team;
J. Doty, R. Vanderspek, G. Crew, J. Villasenor, G. Monnelly, N. Butler,
T. Cline, J. G. Jernigan, A. Levine, F. Martel, E. Morgan, G. Prigozhin,
G. Azzibrouck, J. Braga, R. Manchanda, and G. Pizzichini, on behalf of
the HETE Operations and HETE Optical-SXC Teams;
Y. Shirasaki, C. Graziani, T. Donaghy, M. Matsuoka, M. Suzuki, T.
Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi,
T. Tavenner, Y. Nakagawa, D. Takahashi, R. Satoh, and Y. Urata, on
behalf of the HETE WXM Team;
write:
>From an analysis of the HETE FREGATE data for GRB030519B (=H2716), we
find that the peak flux over 5 s is ~ 8 x 10^-7 erg cm-2 s-1 in the
7-30 keV energy band and ~ 7 x 10^-6 erg cm-2 s-1 in the 30-400 keV
energy band. Similarly, we find that the fluence of the burst is 7 x
10^-6 erg cm^-2 in the 7-30 keV energy band and ~ 6 x 10^-5 erg cm-2 in
the 30-400 keV energy band. Thus this burst is bright and its fluence
is large (the latter is in the top 1% of those for all BATSE bursts).
In addition, a preliminary spectral analysis of the FREGATE data
indicates that the spectral slope of the burst at high (> 100 keV)
energies is > -2, and thus E_peak > 400 keV.
In GCN Circular 2235 (Lamb et al. 2003), the date of the burst was
reported as 3 May 2003 and the width of the WXM localization rectangle
was reported as 24 arcminutes. These are incorrect; the date of the
burst is 19 May 2003 and the width of the localization rectangle is
17.4 arcminutes. Neither affect the WXM or the HETE/IPN error boxes
reported in GCNs 2235 (Lamb et al. 2003) and 2237 (Hurley et al. 2003);
the size of the latter is ~35 square arcminutes.
Follow-up observations of this burst are strongly encouraged.
GCN Circular 2263
Subject
GRB 030519B: optical observations.
Date
2003-06-01T23:35:30Z (22 years ago)
Edited On
2024-11-18T10:04:27Z (6 months ago)
From
Javier Gorosabel at LAEFF-INTA, Madrid <jgu@laeff.esa.es>
Edited By
Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>
J. Gorosabel (IAA-CSIC/STScI), A. Levan (U. Leicester/STScI),
A. de Ugarte Postigo (IAA-CSIC), A.J. Castro-Tirado (IAA-CSIC),
A. Fruchter (STScI), S. Guziy (IAA-CSIC), J.M. Castro Cerón (STScI),
A. Guijarro (CAHA), A. Aguirre (CAHA), M. Alises (CAHA) report:
"We have carried out observations of the central part (coverage
~75%) of the GRB 030519B (GCN 2235) error box, in four
optical bands, with the 2.2m (+BUSCA) telescope at the
Observatorio de Calar Alto. Three of these four bands are non
standard and calibration is still pending. The fourth one
corresponds to Ic, with photometry as follows:
---------------------------------------------
Date Texp Seeing Lim. Mag.
(May 2003 UT) (s) (") (3 sigma)
---------------------------------------------
21.03872--21.06376 3x600 2.0 23.3
21.99519--22.07959 7x600 2.2 23.5
22.98905--23.07625 5x900 3.1 23.3
24.00387--24.03936 3x900 2.3 23.3
---------------------------------------------
PSF matched subtraction did not reveal any reliable afterglow
candidate brighter than Ic ~ 23, implying that this burst likely
belongs to the dark GRB class."
This message may be cited.