GRB 000519
GCN Circular 672
Subject
IPN triangulation of GRB000519
Date
2000-05-19T21:12:03Z (25 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley, on behalf of the Ulysses GRB Team, S. Barthelmy, on behalf
of the GCN GRB team, F. Frontera, C. Guidorzi and E. Montanari, on
behalf of the BeppoSAX GRBM team, and T. Cline, on behalf of the NEAR
GRB team, report:
Ulysses, BATSE, the BeppoSAX GRBM, and NEAR observed this burst at
29885 s UT. (BATSE Trigger #8111). As observed by Ulysses, it
had a duration ~15 s, and a 25-100 keV fluence 3x10^-6 erg/cm^2.
We have triangulated it to a preliminary 100 sq. arcmin. error
box whose 3 sigma coordinates are:
RA(2000) DEC(2000)
23 h 4 m 38.55 s 1 o 10 ' 16.67 " (CENTER)
23 h 5 m 9.33 s 1 o 12 ' 58.16 " (CORNER)
23 h 4 m 25.46 s 1 o 2 ' 54.25 " (CORNER)
23 h 4 m 51.59 s 1 o 17 ' 39.60 " (CORNER)
23 h 4 m 7.73 s 1 o 7 ' 35.67 " (CORNER)
This error box can be refined.
GCN Circular 673
Subject
GRB000519, BVRI field photometry
Date
2000-05-21T17:47:17Z (25 years ago)
From
Arne A. Henden at USNO/USRA <aah@nofs.navy.mil>
A. Henden (USRA/USNO) reports on behalf of the USNO GRB team:
We have acquired preliminary BVRcIc all-sky photometry for
an 11x11 arcmin field that covers the majority of the
error box for GRB000519 with the USNOFS 1.0-m telescope on one
photometric night. Stars brighter than
V=13 are saturated and should be used with care.
We have placed the photometric data on our anonymous ftp site:
ftp://ftp.nofs.navy.mil/pub/outgoing/aah/grb/grb000519.dat
The current photometry has a potential external zero-point
error of about two percent. The astrometry in this file
is based on linear plate solutions with respect to USNO-A2.0.
The internal errors are less than 100mas.
Further calibration of this field will be performed if
an optical afterglow is identified.
GCN Circular 679
Subject
GRB000519: Optical observations
Date
2000-05-30T13:25:21Z (25 years ago)
From
Brian Lindgren Jensen at U.of Copenhagen <brian_j@astro.ku.dk>
B. L. Jensen, H. Pedersen, J. Hjorth (U. of Copenhagen),
J. Gorosabel (DSRI, Copenhagen),
T. H. Dall, J. P. U. Fynbo (U. of Aarhus) and
S. O'Toole (U. of Sydney), report on
behalf of a larger European collaboration:
"We have obtained images covering about 95% of the 100
sq. arcmin error box reported by Hurley et al. (GCN #672)
with the 2.56-m Nordic Optical Telescope (+ALFOSC, mosaic
of 5 pointings) on La Palma, and the 1.54-m Danish
Telescope (+DFOSC) at La Silla, as follows:
Telescope Date Filter/Exp FWHM
NOT 2000 May 20.17 UT (t+20h) R: 180-360 s 1.5"
DK-1.54m 2000 May 20.39 UT (t+25h) R: 4x240 s 1.7"
DK-1.54m 2000 May 25.37 UT (t+6d) R: 3x300 s 3.5"
Observations were hampered by moonlight. Using the photometry
provided by Henden (GCN #673), we obtain limiting magnitudes
of R~20.8 for the NOT, and R~21.0 for the DK-1.5m May 20
image.
The exposures have been compared internally, and with the
DSS-II (red) exposure. No candidate counterpart was found."