GRB 060602B
GCN Circular 5229
Subject
GRB060602B : REM infrared observations
Date
2006-06-06T13:20:23Z (19 years ago)
From
Andrea Melandri at Liverpool John Moores U <axm@astro.livjm.ac.uk>
A. Melandri, E. Distefano, S. Covino, E. Molinari, G. Chincarini,
F.M. Zerbi, L.A. Antonelli, V. Testa, G. Tosti, F. Vitali, P. Conconi,
G. Cutispoto, G. Malaspina, L. Nicastro, E. Palazzi, E. Meurs,
P. Goldoni, on behalf of the REM/ROSS Team, report:
We imaged the field of GRB 060602B (Schady et al., GCN 5200) with
the 60 cm robotic telescope REM starting at June 3, 01:37:43.5 UT,
i.e about 1.72 hours after the burst.
Due to poor meteo conditions at LaSilla a short serie of images
with the infrared camera were taken with J,H and K filters for
a total integration time of 100s in each filter.
The analysis of the entire dataset do not show any infrared source
inside of XRT error circle (Schady et al., GCN 5200; Beardmore et al.,
GCN 5209) down to limiting magnitude of 15.1, 13.2 and 12.2
respectively (5 sigma uper limit)
This message may be cited.
GCN Circular 5210
Subject
GRB 060602B: XMM-Newton Survey Source
Date
2006-06-04T01:54:48Z (19 years ago)
From
Jules Halpern at Columbia U. <jules@astro.columbia.edu>
I note that a faint source was detected by XMM-Newton in a survey
observation of the Galactic plane on 2000 September 23 at a position
consistent, to within their combined uncertainties, with the Swift
XRT source (Beardmore et al., GCN 5209) in the error circle of the
possible GRB 060602B (trigger #213190: Schady et al., GCN 5200).
R.A.(2000) Dec.(2000) +/-(")
--------------------------------------------------
Swift XRT 17 49 31.6 -28 08 03.2 3.7
XMM-Newton 17 49 31.59 -28 08 08.7 4
--------------------------------------------------
It is listed in the XMMSSC-XMM-Newton Serendipitous Source Catalog
as having a flux of 6.9x10^-14 erg/cm2/s in the 0.2-12 keV range.
Therefore, it is possible that this is a Galactic X-ray burster,
as noted by Palmer et al. (GCN 5208). If at a distance of 8 kpc,
for example, its 15-150 keV fluence in the BAT of 1.8x10^-7 erg/cm2
(Palmer et al., GCN 5208) corresponds to an average luminosity of
1.1x10^38 erg/s in this band over the 13 s duration of the burst,
and its 0.2-12 keV luminosity seen by XMM was 5.3x10^32 erg/s, within
the range of quiescent LMXBs (e.g., Tomsick et al. 2004, ApJ, 610, 933).
GCN Circular 5209
Subject
GRB 060602B: Swift-XRT Refined Analysis
Date
2006-06-04T00:33:38Z (19 years ago)
From
Andy Beardmore at U Leicester <apb@star.le.ac.uk>
A.P. Beardmore, O. Godet (U. Leicester) and T. Sakamoto (GSFC/ORAU)
report on behalf of the Swift-XRT team :
We have analysed the first 11.4ks of Swift XRT PC mode data from the BAT
trigger GRB060602B (Schady et al., GCN 5200; trigger number 213190). We
find a refined XRT position of:
RA(J2000) = 17:49:31.6
Dec(J2000) = -28:08:03.2
with an estimated uncertainty of 3.7 arcsec (90% containment). This is
1.4 arcsec away from the XRT position reported in GCN 5200 and 64.2
arcsec from the refined BAT position (Palmer et al., GCN 5208).
The X-ray light curve shows a small rise in intensity until T+200s, then
follows a simple power-law decay with a index of 1.05 +/- 0.07.
The X-ray spectrum over the same interval (T+100s to T+40ks) can be well
modelled by an absorbed power-law, with a photon index of 3.1 +/- 0.6
and a column density of 5.0 +/- 1.4 E22 cm^-2. The measured galactic
column density in this direction is 1.4E22 cm^-2. The observed 0.3-10keV
flux is 3.2E-12 ergs cm**-2 s**-1, which corresponds to an unabsorbed
flux of 5.0E-11 ergs cm**-2 s**-1. The measured spectral and temporal
indices are difficult to reconcile with standard GRB afterglow models.
The X-ray spectrum can also be equally well fit by an absorbed blackbody
model, with a temperature of 0.90+/-0.09 keV and a column density of 2.1
+/- 0.7 E22 cm^-2. This model has an observed (unabsorbed) 0.3-10 keV flux
of 2.8E-12 (4.3E-12) ergs cm**-2 s**-1.
Assuming the source decays at the same rate, we predict an XRT count
rate of 0.0011 count/s at T+48 hrs, which corresponds to an observed
flux of 8.8E-14 ergs cm**-2 s**-1.
This Circular is an official product of the Swift XRT Team.
GCN Circular 5208
Subject
GRB 060602B: Swift-BAT Refined Analysis
Date
2006-06-04T00:00:01Z (19 years ago)
From
Hans Krimm at NASA-GSFC <krimm@milkyway.gsfc.nasa.gov>
D. Palmer (LANL), L. Barbier (GSFC), S. Barthelmy (GSFC),
J. Cummings (GSFC/ORAU), E. Fenimore (LANL), N. Gehrels (GSFC),
D. Hullinger (BYU-Idaho), M. Koss (GSFC/UMD), H. Krimm (GSFC/USRA),
C. Markwardt (GSFC/UMD), A. Parsons (GSFC), T. Sakamoto (GSFC/ORAU),
G. Sato (GSFC/JSPS/USRA), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC),
on behalf of the Swift-BAT team:
Using the data set from T-119.1 to T+182.9 sec from the recent telemetry
downlink, we report further analysis of BAT GRB 060602B
(trigger #213190) (Schady, et al., GCN 5200). The BAT
ground-calculated position
is (RA,Dec) = 267.368, -28.121 deg {17h 49m 28.2s, -28d 7' 15.5"} (J2000)
+- 1.4 arcmin, (radius, sys+stat, 90% containment). The partial
coding was 100%.
The light curve shows a single boxcar shaped peak from ~T-1.0 to ~T+12.0 sec.
The peak is strongest in the 15-25 keV band and is not seen above 50 keV.
T90 (15-350 keV) is 9.0 +- 2 sec (estimated error including systematics).
The time-averaged spectrum from T-1.1 to T+8.8 is best fit by
a simple power-law model. The power law index of the time-averaged
spectrum is 5.02 +- 0.52. The fluence in the 15-150 keV band is
1.8 +- 0.2 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from
T+5.94 sec in the 15-150 keV band is 0.8 +- 0.1 ph/cm2/sec. All the quoted
errors are at the 90% confidence level.
We note that this is one of the softest spectra yet seen in the BAT for a GRB.
The spectra plus the galactic coordinates of the source: galactic lon, lat:
1.15, -0.30 deg suggest that this source may be an X-ray burster rather than
a classical GRB. Analysis of XRT and other ground and satellite based
observations will help to settle this question. Therefore further observations
are encouraged.
GCN Circular 5207
Subject
GRB 060602B: Swift/UVOT observations
Date
2006-06-03T22:33:46Z (19 years ago)
From
Alexander Blustin at MSSL-UCL <ajb@mssl.ucl.ac.uk>
A. J. Blustin (UCL-MSSL), P. Schady (UCL-MSSL) and S. B. Pandey
(UCL-MSSL) report on behalf of the Swift/UVOT team:
The Swift/UVOT began observing the field of GRB 060602B at
23:56:01 on 2006-06-02, 87 s after the BAT trigger (Schady
et al., GCN 5200). No new source with respect to the DSS was
detected within the XRT error circle (Schady et al., GCN 5200)
in coadded images in any filter down to the following 3-sigma
magnitude upper limits:
Filter T_range(s) Exposure(s) 3sig_UL
V 193-29437 2320 20.2
B 670-18594 897 20.6
U 646-24379 1793 20.8
W1 622-23647 1998 20.1
M2 598-30163 2557 20.6
W2 699-28524 1110 20.3
White 87-6795 312 20.2
These upper limits are not corrected for Galactic extinction
(E(B-V) ~ 35.7; note that extinction estimates are unreliable
for Galactic latitudes < 5 deg).
GCN Circular 5205
Subject
GRB 060602B: RTT150 optical observations
Date
2006-06-03T15:32:44Z (19 years ago)
From
Rodion Burenin at IKI, Moscow <rodion@hea.iki.rssi.ru>
I. Khamitov (TUG), I. Bikmaev, N. Sakhibullin (KSU/AST),
Z. Aslan (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.),
R. Burenin, M. Pavlinsky (IKI)
report:
We observed error radius of XRT position of GRB060602B (Swift trigger
213190, Schady et al. GCN5200) with Russian-Turkish 1.5-m telescope
(RTT150, Bakirlitepe, TUBITAK National Observatory, Turkey), starting at
June 3, 00:19UT, i.e. ~25 min after the burst. A series of frames was
taken (7*30s and 5*300 exposures in Rc).
Down to our limiting magnitude R=~23, inside of XRT error circle we
found the only object (RA=17:49:31.80, DEC=-28:08:02.2). The object is
relatively bright (R=18.7) and starlike (PSF FWHM=~1.4''). It is present
in DSS and its brightness did not change during our observations,
therefore we do not consider this object as optical counterpart of
GRB060602B.
Our finding chart can be found at:
http://hea.iki.rssi.ru/grb/060602b/r.jpg
This message may be cited.
GCN Circular 5200
Subject
GRB 060602B: Swift detection of a burst
Date
2006-06-03T00:53:33Z (19 years ago)
From
Patricia Schady at MSSL/Swift <ps@mssl.ucl.ac.uk>
P. Schady (MSSL-UCL), A. P. Beardmore (U Leicester),
F. E. Marshall (NASA/GSFC), D. M. Palmer (LANL), E. Rol (U Leicester)
and G. Sato (GSFC/JSPS/USRA) report on behalf of the Swift Team:
At 23:54:33 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 060602B (trigger=213190). Swift slewed immediately
to the burst. The BAT on-board calculated location is
RA,Dec 267.380, -28.109 {17h 49m 31s, -28d 06' 31"} (J2000)
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single-peaked
structure with a duration of about 20 sec. The peak count rate
was ~1000 counts/sec (15-350 keV), at 7 sec after the trigger.
The XRT began taking data at 23:55:56 UT, 83 seconds after the BAT
trigger. We find a faint uncatalogued source in the first 246s of
down-linked PC mode data at RA,Dec (J2000) = 17 49 31.7, -28 08 03.7
with an uncertainty of 3.9 arcsec (90% containment). This is 92
arcsec from the on-board BAT position. This source is not consistent
with the BOOTES-IR candidate reported in GCN 5198.
UVOT took a finding chart exposure of 100 seconds with the White
(160-650 nm) filter starting 89 seconds after the BAT trigger. No
afterglow candidate has been found in the initial data products. The
2.7'x2.7' sub-image covers 25% of the BAT error circle. The typical
3-sigma upper limit has been about 18.5 mag. The 8'x8' region for the
list of sources generated on-board covers 100% of the BAT error
circle. The list of sources is typically complete to about 18 mag. We
note that this is a crowded field and that a large, but uncertain
extinction is expected.
GCN Circular 5199
Subject
GRB060602B: Watcher observations - no OT candidate
Date
2006-06-03T00:52:24Z (19 years ago)
Edited On
2024-11-18T10:07:18Z (a year ago)
From
Petr Kubanek at AIO <petr@lascaux.asu.cas.cz>
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>
Petr Kubánek (ASU AV CR Ondrejov & ISDC Versoix),
Martin Jelínek (IAA Granada),
John French (UCD Dublin)
on behalf of the Watcher collaboration report:
we observed location of GRB 060602B (Trigger 213190), starting 4 sec
after Bootes-IR observation (Jelínek et al., GCN 5198), e.g. ~14.5 min
post GRB. We detect object at Bootes-IR position.
As the object is visible at DSS-R images, we DO NOT consider it as GRB
transient.
We don't plan any futher observations.
This message can be cited.
GCN Circular 5198
Subject
GRB060602B: BOOTES-IR candidate afterglow
Date
2006-06-03T00:30:00Z (19 years ago)
From
Martin Jelinek at Inst.Astrophys.Andalucia,Granada <mates@iaa.es>
Martin Jelinek (IAA CSIC Granada, Spain)
Petr Kub�nek (ASU AV CR Ondrejov & ISDC, Versoix),
Stanislav V�tek (IAA CSIC Granada, Spain)
on behalf of the BOOTES collaboration report:
Bootes-IR telescope, located at IAA Observatory de Sierra
Nevada, observed position of GRB 060602B (Trigger 213190),
starting 10.7 sec post GCN notice (= 14.5 min post GRB).
We obtained a series of R-band exposures. An object with R ~
16 mag is shown at
RA 17:49:20.14 DEC -28:07:17.95 (J2000) with estimated
uncertanity 1 arcsec
which is not at GSC-2 and USNO catalogues. It is also not
visible at DSS. According to MPC, there is not any know
asteroid nearby. We qualify this object as a possible GRB
counterpart.
Futher analysis, as well as observations, are in progress.
[GCN OPS NOTE(03jun06): Per authors' request, AJC-T was withdrawn
from the authors list as it was unintensionally included.]