GRB 130610A
GCN Circular 14842
Subject
GRB 130610A: Swift detection of a burst with an optical counterpart
Date
2013-06-10T03:21:59Z (12 years ago)
From
David Palmer at LANL <palmer@lanl.gov>
J. R. Cummings (NASA/UMBC), D. N. Burrows (PSU),
N. Gehrels (NASA/GSFC), J. A. Kennea (PSU),
H. A. Krimm (CRESST/GSFC/USRA), D. Malesani (DARK/NBI),
C. B. Markwardt (NASA/GSFC), A. Maselli (INAF-IASFPA),
A. Melandri (INAF-OAB), D. M. Palmer (LANL), T. Sakamoto (AGU),
M. H. Siegel (PSU) and T. N. Ukwatta (MSU) report on behalf of the
Swift Team:
At 03:12:13 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 130610A (trigger=557845). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 224.416, +28.191 which is
RA(J2000) = 14h 57m 40s
Dec(J2000) = +28d 11' 28"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a multi-peaked
structure with a total duration of about 30 sec. The peak count rate
was ~2700 counts/sec (15-350 keV), at ~5 sec after the trigger.
The XRT began observing the field at 03:14:26.3 UT, 133.0 seconds after
the BAT trigger. XRT found a bright, uncatalogued X-ray source located
at RA, Dec 224.4218, 28.2048 which is equivalent to:
RA(J2000) = +14h 57m 41.23s
Dec(J2000) = +28d 12' 17.3"
with an uncertainty of 6.6 arcseconds (radius, 90% containment). This
location is 52 arcseconds from the BAT onboard position, within the BAT
error circle. No event data are yet available to determine the column
density using X-ray spectroscopy.
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 140 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 14:57:40.89 = 224.42037
DEC(J2000) = +28:12:25.7 = 28.20715
with a 90%-confidence error radius of about 0.62 arc sec. This position is 9.6
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.91 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.02.
Burst Advocate for this burst is J. R. Cummings (jayc AT milkyway.gsfc.nasa.gov).
Please contact the BA by email if you require additional information
regarding Swift followup of this burst. In extremely urgent cases, after
trying the Burst Advocate, you can contact the Swift PI by phone (see
Swift TOO web site for information: http://www.swift.psu.edu/too.html.)
GCN Circular 14843
Subject
GRB 130610A - Liverpool Telescope Optical Afterglow Confirmation
Date
2013-06-10T03:52:01Z (12 years ago)
From
Francisco Virgili at Liverpool John Moores U <fjv@astro.livjm.ac.uk>
A. Melandri (INAF-OAB), F.J. Virgili(LJMU), C.G. Mundell (LJMU) and A.
Gomboc (U. Ljubljana) report:
The 2-m Liverpool Telescope robotically followed up GRB130610A (Swift
trigger 557845, Cummings et al., GCN 14842) 15.5 min after the GRB
trigger time observing with SLOAN-gri filters.
The automatic LT-TRAP procedure detected an uncatalogued fading source
candidate at:
RA = 14:57:40.89
Dec = +28:12:25.5 (J2000)
with magnitude R~17.9 mag (vs USNOB1) ~16 min after the burst trigger.
The object is clearly fading in all filters.
Observations and analysis are ongoing.
[GCN OPS NOTE(10jun13): The GRB name in the firt sentence was changed
from "130410A" to "130610A".]
GCN Circular 14844
Subject
GRB 130610A: Skynet/PROMPT detection of the optical afterglow
Date
2013-06-10T03:57:35Z (12 years ago)
From
Adam S. Trotter at UNC-Chapel Hill/PROMPT/Skynet <atrotter@physics.unc.edu>
A. Trotter, J. Haislip, A. LaCluyze, D. Reichart, T. Berger, M. Carroll,
H. T. Cromartie, R. Egger, A. Foster, C. Foster, N. Frank, K. Ivarsen,
D. James, M. Maples, J. Moore, M. Nysewander, E. Speckhard, P. Taylor
and J. A. Crain report
Skynet observed the Swift/XRT localization of GRB 130610A (Cummings et
al., GCN 14842, Swift trigger #557845), starting at 2013-06-10, 03:14:05
UT (t=2.03m post-trigger), with three 16" telescopes of the PROMPT array
at CTIO, Chile. We detect a fading afterglow in B, V and I bands at: RA
= 14:57:40.9, Dec = 28:12:25.5 (J2000.0), consistent with the UVOT
source position reported in GCN 14842.
The afterglow rises until t~3.4m, at which time the apparent magnitudes
are B~18.1, V~17.1, I~16.6. A preliminary light curve is at:
http://www.skynet.unc.edu/grb/grb130610a.png
Magnitudes are in the Vega system and photometry is calibrated to 4 SDSS
stars in the field.
Skynet observations are ongoing.
GCN Circular 14845
Subject
GRB 130610A: PAIRITEL NIR Afterglow Observations
Date
2013-06-10T04:04:56Z (12 years ago)
From
Adam Morgan at U.C. Berkeley <qmorgan@gmail.com>
A. N. Morgan & C. R. Klein (UC Berkeley) report:
We observed the field of GRB 130610A (Cummings et al., GCN 14842) with the
1.3m PAIRITEL located at Mt. Hopkins, Arizona. Observations began at
2013-Jun-07 03h35m37s UT, 0.39 hr after the Swift Trigger. In mosaics
(effective exposure time of ~5.85 minutes) taken simultaneously in the J,
H, and Ks filters, we detect the optical afterglow (Cummings et al., GCN
14842; Melandri et al., GCN 14843; Trotter et al. GCN 14844). The
preliminary K-band reduction is corrupted.
The preliminary photometry yields:
post burst
t_mid (hr) exp.(m) filt mag m_err
0.47 5.85 J 17.49 0.16
0.47 5.85 H 16.95 0.20
Observations are ongoing. All magnitudes are given in the Vega system,
calibrated to 2MASS. No correction for Galactic extinction has been made to
the above reported values.
GCN Circular 14846
Subject
GRB 130610A: P60 Observations
Date
2013-06-10T05:19:12Z (12 years ago)
From
S. Bradley Cenko at Caltech <cenko@srl.caltech.edu>
S. B. Cenko (NASA/GSFC) and D. A. Perley (Caltech) report on behalf of a
larger collaboration:
We have imaged the optical afterglow of the Swift GRB 130610A (Cummings et
al., GCN 14842) with the robotic Palomar 60 inch telescope. A series of
90 s exposures in the g', r', i', and z' filters were begun starting at
04:23 UT on 2013 Jun 10 (1.18 hr after the Swift trigger). We detect the
afterglow in individual exposures in all 4 filters. Using nearby point
sources from SDSS for calibration, we measure a magnitude of r' = 19.8 in
our initial images. Compared with earlier observations with the Liverpool
telescope (Melandri et al., GCN 14843), this suggests a power-law decay
index of ~ 1.2.
GCN Circular 14848
Subject
GRB 130610A: VLT/UVES redshift
Date
2013-06-10T07:11:49Z (12 years ago)
From
Alain Smette at ESO/Chile <asmette@eso.org>
A. Smette (ESO), C. Ledoux (ESO), P. Vreeswijk (Weizmann), A. De Cia
(Weizmann)**,
P. Petitjean (IAP), J. Fynbo (DARK/NBI), D. Malesani (DARK/NBI), A. Fox
(STSCI) report:
We have observed GRB 130610A (Cummings et al., GCN 14842) with UVES
on the ESO-VLT, in Rapid Response Mode. Preliminary analysis of the
automatically
reduced spectra reveals the presence of an absorption line system at z ~
2.092
including a damped Ly-alpha line, CIV 1548 &1550, SiIV 1393 & 1402, SiII
1260 & 1526
FeII 1608, 2382, 2600, AlII1670, AlIII 1854 & 1862. This absorption line
system
can be identified with the gamma-ray burst redshift.
We are grateful to the excellent support provided by Christophe Martayan
and Felipe Gaete.
GCN Circular 14849
Subject
GRB 130610A, Swift-BAT refined analysis
Date
2013-06-10T13:40:50Z (12 years ago)
From
Jay R. Cummings at NASA/GSFC/Swift <james.r.cummings@nasa.gov>
C. B. Markwardt (GSFC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),
J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC),
H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/GSFC/ORAU), D. M. Palmer (LANL),
T. Sakamoto (AGU), G. Sato (ISAS), M. Stamatikos (OSU), J. Tueller (GSFC),
T. N. Ukwatta (MSU)
(i.e. the Swift-BAT team):
Using the data set from T-60 to T+243 sec from the recent telemetry downlink,
we report further analysis of BAT GRB 130610A (trigger #557845)
(Cummings, et al., GCN Circ. 14842). The BAT ground-calculated position is
RA, Dec = 224.414, 28.187 deg which is
RA(J2000) = 14h 57m 39.3s
Dec(J2000) = +28d 11' 13.8"
with an uncertainty of 2.4 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 96%.
The mask-weighted light curve shows a single FRED peak. T90 (15-350 keV) is
46.4 +- 11.2 sec (estimated error including systematics).
The time-averaged spectrum from T-7.04 to T+61.02 sec is best fit by a simple
power-law model. The power law index of the time-averaged spectrum is
1.27 +- 0.08. The fluence in the 15-150 keV band is 2.5 +- 0.1 x 10^-06 erg/cm2.
The 1-sec peak photon flux measured from T+4.53 sec in the 15-150 keV band
is 1.7 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence
level.
The results of the batgrbproduct analysis are available at
http://gcn.gsfc.nasa.gov/notices_s/557845/BA/
GCN Circular 14851
Subject
GRB 130610A: Enhanced Swift-XRT position
Date
2013-06-10T14:44:39Z (12 years ago)
From
Phil Evans at U of Leicester <pae9@leicester.ac.uk>
J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester)
report on behalf of the Swift-XRT team.
Using 7625 s of XRT Photon Counting mode data and 8 UVOT
images for GRB 130610A, we find an astrometrically corrected X-ray
position (using the XRT-UVOT alignment and matching UVOT field sources
to the USNO-B1 catalogue): RA, Dec = 224.42032, +28.20711 which is equivalent
to:
RA (J2000): 14h 57m 40.88s
Dec (J2000): +28d 12' 25.6"
with an uncertainty of 1.4 arcsec (radius, 90% confidence).
This position may be improved as more data are received. The latest
position can be viewed at http://www.swift.ac.uk/xrt_positions. Position
enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans
et al. (2009, MNRAS, 397, 1177).
This circular was automatically generated, and is an official product of the
Swift-XRT team.
GCN Circular 14853
Subject
GRB 130610A: Swift-XRT refined Analysis
Date
2013-06-10T15:22:03Z (12 years ago)
From
Phil Evans at U of Leicester <pae9@leicester.ac.uk>
B. Sbarufatti (INAF-OAB/PSU), G. Stratta (ASDC), P. D'Avanzo
(INAF-OAB), J.A. Kennea (PSU), M.C. Stroh (PSU), D.N. Burrows (PSU),
A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), B.P. Gompertz
(U. Leicester) and J.R. Cummings report on behalf of the Swift-XRT
team:
We have analysed 11 ks of XRT data for GRB 130610A (Cummings et al.
GCN Circ. 14842), from 139 s to 25.1 ks after the BAT trigger. The
data comprise 116 s in Windowed Timing (WT) mode with the remainder in
Photon Counting (PC) mode. The enhanced XRT position for this burst was
given by Osborne et al. (GCN. Circ 14851).
The light curve can be modelled with a power-law decay with a decay
index of alpha=1.17 (+/-0.03).
A spectrum formed from the PC mode data can be fitted with an absorbed
power-law with a photon spectral index of 2.04 (+/-0.15). The
best-fitting absorption column is 2.6 (+2.8, -2.6) x 10^21 cm^-2, at a
redshift of 2.092, in addition to the Galactic value of 1.9 x 10^20
cm^-2 (Kalberla et al. 2005). The counts to observed (unabsorbed)
0.3-10 keV flux conversion factor deduced from this spectrum is 3.4 x
10^-11 (3.9 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
Galactic foreground: 1.9 x 10^20 cm^-2
Intrinsic column: 2.6 (+2.8, -2.6) x 10^21 cm^-2 at z=2.092
Photon index: 2.04 (+/-0.15)
If the light curve continues to decay with a power-law decay index of
1.17, the count rate at T+24 hours will be 3.2 x 10^-3 count s^-1,
corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.1 x
10^-13 (1.3 x 10^-13) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at
http://www.swift.ac.uk/xrt_products/00557845.
This circular is an official product of the Swift-XRT team.
GCN Circular 14854
Subject
GRB 130610A: LOAO BVR Observation
Date
2013-06-10T15:24:59Z (12 years ago)
From
Myungshin Im at Seoul Nat U <mim@astro.snu.ac.kr>
M. Im (CEOU/SNU), H.-I. Sung(KASI), and Y. Urata (NCU)
on behalf of EAFON
We observed the field of GRB 130610A (Cummings et al. GCN 14842),
using a 1-m telescope at Mt. Lemmon Optical Observatory (LOAO) in
Arizona, US. The observation started at 2013-06-10 05:54:16 UT,
about 2.7 hrs after the burst alert, and a series of images were
taken in B, R, and I-band for about 40 min.
We identify the afterglow (Melandri et al. GCN 14843), in all the
three bands, with approximate magnitude of B = 21.35 +- 0.12,
V=20.90 +- 0.26, and R=20.35 +- 0.18, all in Vega magnitude, calibrated
against a star in the vicinity using SDSS photometry converted to BVR.
We thank the LOAO operator, In-Kyung Baek for performing
the observation.
GCN Circular 14858
Subject
GRB 130610A: Fermi GBM Observation
Date
2013-06-10T18:03:27Z (12 years ago)
From
Gerard Fitzpatrick at UCD <gerard.fitzpatrick@ucdconnect.ie>
G. Fitzpatrick (UCD) and V. Pelassa (UAH)
report on behalf of the Fermi GBM Team:
At 03:12:10.50 UT on 10 June 2013, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 130610A (trigger 392526733 /130610133)
which was also detected by the Swift/BAT (Cummings et al., GCN Circ. 14842).
The GBM on-ground location is consistent with the Swift position.
The GBM light curve consists of a single peak
with a duration (T90) of about 28 s (50-300 keV).
The time-averaged spectrum from T0-2.6 s to T0+25.7 s is
adequately fit by a power law function with an exponential
high-energy cutoff. The power law index is -1.0 +/- 0.1 and
the cutoff energy, parameterized as Epeak, is 294.9 +/- 42.9 keV
The event fluence (10-1000 keV) in this time interval is
(6.1 +/- 0.4)E-06 erg/cm^2. The 1-sec peak photon flux measured
starting from T0+8.0 s in the 10-1000 keV band is 4.5 +/- 0.9 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog.
GCN Circular 14859
Subject
GRB 130610A: Swift/UVOT Observations
Date
2013-06-10T18:12:42Z (12 years ago)
From
Mike Siegel at PSU/Swift MOC <siegel@swift.psu.edu>
M. H. Siegel (PSU) and J. R. Cummings (NASA/UMBC)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 130610A
140 s after the BAT trigger (Cummings et al., GCN Circ. 14842).
A fading source consistent with the XRT position (Cummings et al. GCN Circ. 14842)
is detected in the initial UVOT exposures.
The preliminary UVOT position is:
RA (J2000) = 14:57:40.88 = 224.42034 (deg.)
Dec (J2000) = +28:12:25.8 = 28.20717 (deg.)
with an estimated uncertainty of 0.51 arc sec. (radius, 90% confidence).
Preliminary detections and 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are listed below.
The lack of detection in the NUV filters would be consistent with the z=2.1 redshift
reported by Smette et al. (GCN Circ. 14848).
Filter T_start(s) T_stop(s) Exp(s) Mag
white (fc) 140 290 147 17.85+-0.04
white 1491 1857 58 19.56+-0.19
white 5267 6902 393 20.47+-0.15
v 1540 7312 451 >20.07
b 1467 2005 77 19.12+-0.20
b 6498 19320 1754 21.72+-0.38
u 298 441 140 17.67+-0.09
u 1614 1980 58 19.00+-0.30
uvw1 1589 1956 58 >19.05
uvm2 1911 23463 1298 >21.09
uvw2 1863 7108 412 >20.63
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.02 in the direction of the burst
(Schlegel et al. 1998).
GCN Circular 14860
Subject
GRB 130610A: ISON-NM optical observations
Date
2013-06-10T18:56:07Z (12 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
L. Elenin (KIAM), V. Savanevych (KNURE), A. Bryukhovetskiy (NSFCTC),
I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB
follow-up collaboration:
We observed of the field of the Swift GRB 130610A (Cummings et al.,
GCN 14842) with 0.45-m telescope of ISON-NM observatory starting on
June, 10 (UT) 03:53:49. Series of 30 s exposures were obtained in clear
filter. In the combined images we detect afterglow (Cummings et al.,
GCN 14842; Melandri et al., GCN 14843; Trotter et al., GCN 14844).
Preliminary photometry is based on the SDSS nearby stars:
UT start, T0+ Filter Exposure, OT,
days s
03:53:49 0.03531 none 25*30 19.33 �� 0.07
04:12:33 0.04831 none 25*30 19.56 �� 0.10
GCN Circular 14891
Subject
GRB 130610A: iTelescope T21 optical observations
Date
2013-06-13T05:26:42Z (12 years ago)
From
Veli-Pekka Hentunen at Taurus Hill Obs,A95 <veli-pekka.hentunen@kassiopeia.net>
Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill
Observatory, Varkaus, Finland) report:
We have detected GRB 130610A optical afterglow at iTelescope observatory
T21 (Mayhill, New Mexico) 0.43m/6.8 astrograph and FLI-PL6303E CCD
camera. Three unfiltered images and three photometric R filter images with
300 sec exposure time were made.
The afterglow was detected at following position RA 14:57:40.86 and
DEC +28:12:26.0
The following magnitudes were obtained from the observations using
NOMAD1 1182-0257977 (R=14.110) as the comparison:
Tmid(sec)+T0 Filter Exp. time Mag Mag err.
2442 unfiltered 300 19.09CR 0.15
2759 unfiltered 300 19.34CR 0.19
3076 unfiltered 300 19.17CR 0.16
3717 R 300 19.58R 0.32
4034 R 300 19.93R 0.44
4351 R 300 19.93R 0.43
GCN Circular 14907
Subject
GRB 130610A: CrAO optical observations
Date
2013-06-15T23:18:24Z (12 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
V. Rumyantsev (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB
follow-up collaboration:
We observed of the field of the Swift GRB 130610A (Cummings et al.,
GCN 14842) with Shajn telescope of CrAO starting on June, 10 (UT)
19:03:05. Several exposures of 120 s were obtained in R-filter. In the
combined image we clearly detected bright point-like source
superimposed on an extended object. Coordinates of the bright object
(J2000) 14 57 40.85 +28 12 25.5 (uncertainty of 0.2" in both
coordinates) coincide with the afterglow coordinates (Cummings et al.,
GCN 14842; Melandri et al., GCN 14843). The extended object could be a
host galaxy with brightness of R ~ 23.8.
Preliminary photometry might be biasedby the extended object and based
on the USNO B1.0 star 1182-0253576 14 57 45.41 +28 12 57.7 assuming
R=18.98:
UT start, T0+ Filter Exposure, OT, UL
mid,days s
2013-06-10T19:03:05 0.6860 R 35*120 21.70 +/- 0.05 23.9
A finding chart can be found at
http://grb.rssi.ru/GRB130610A/GRB130610a_20130610_R_ZTSh.GIF
GCN Circular 14908
Subject
GRB 130610A: TAROT La Silla observatory optical observations
Date
2013-06-16T09:32:51Z (12 years ago)
From
Alain Klotz at IRAP-CNRS-OMP <Alain.Klotz@free.fr>
Klotz A. (IRAP-CNRS-OMP), Gendre B. (IRAP-CNRS-OMP),
Boer M., Siellez K., Dereli H., Bardho O. (UNS-CNRS-OCA),
Atteia J.L. (IRAP-CNRS-OMP) report:
We imaged the field of GRB 130610A detected by SWIFT
(trigger 557845) with the TAROT robotic telescope (D=25cm)
located at the European Southern Observatory,
La Silla observatory, Chile.
The observations started 91s after the GRB trigger
(17s after the notice). The elevation of the field
decreased from 31 degrees above horizon and weather conditions
were good.
The first image is trailed with a duration of 60.0s
(see the description in Klotz et al., 2006, A&A 451, L39).
We recorded the rise of the afterglow discovered by
Melandri et al. (GCNC 14843).
We used the star NOMAD1 1182-0257977 R.A.=224.3892908
DEC=+28.2065917 R=14.11 to extract the light curve
of the rise of the afterglow:
start end Rmag
(sec) (sec)
91 97 > 17.8
97 103 > 17.8
103 109 > 17.8
109 115 > 17.8
115 121 > 17.8
121 127 17.7
127 133 16.9
133 139 16.5
139 145 16.6
145 151 16.1
Magnitudes are not corrected for galactic dust extinction.
After the trailed image a technical problem prevented
to obtain next images.