| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB110412315 |
|
| T0 |
7:33:21 UTC |
GCN_circulars,Swift Det |
| ra |
133.4910° |
Swift |
| decl |
13.4880° |
Swift |
| pos_error |
1.48e-02° |
Swift |
| T90 |
20.733 s |
Fermi_GBM |
| T90_error |
4.636 s |
Fermi_GBM |
| T90_start |
7:33:35.709 UTC |
Fermi_GBM |
| fluence |
2.55e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
2.99e-08 erg/cm² |
Fermi_GBM |
| T100 |
35.442 s |
|
| GBM_located |
False |
|
| mjd |
55663.31482638889 |
GCN_circulars,Swift Det |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB110412315 |
| trigger_name |
bn110412315 |
| ra |
133.4921° |
| decl |
13.5169° |
| pos_error |
4.65e+00° |
| datum |
2011-04-12 |
| t_trigger |
7:33:35.706 UTC |
| T90 |
20.733 s |
| T90_error |
4.636 s |
| T90_start |
7:33:35.709 UTC |
| fluence |
2.55e-06 erg/cm² |
| fluence_error |
2.99e-08 erg/cm² |
| flux_1024 |
2.75e+00 erg/cm²/s |
| flux_1024_error |
2.16e-01 erg/cm²/s |
| flux_1024_time |
5.95e+00 erg/cm²/s |
| flux_64 |
4.44e+00 erg/cm²/s |
| flux_64_error |
8.23e-01 erg/cm²/s |
| IPN table |
|---|
| GRB_name |
GRB110412A |
| ra |
133.4917° |
| decl |
13.5167° |
| pos_error |
5.00e-02° |
| Swift table |
|---|
| GRB_name |
GRB110412A |
| t_trigger |
7:33:21 UTC |
| ra |
133.4910° |
| decl |
13.4880° |
| pos_error |
1.48e-02° |
| T90 |
23.4 s |
| fluence |
1.80e-06 erg/cm² |
| GCN 11922 table |
|---|
| GRB_name |
GRB110412A |
| GCN_number |
11922 |
| Detection_method |
Swift Det |
| t_trigger |
7:33:21 UTC |
| ra |
133.4920° |
| decl |
13.5170° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 11922
SUBJECT: GRB 110412A: Swift detection of a burst
DATE: 11/04/12 07:44:19 GMT
FROM: Jonathan Gelbord at PSU/Swift
J. M. Gelbord (PSU), V. D'Elia (ASDC), P. A. Evans (U Leicester),
N. Gehrels (NASA/GSFC), V. Mangano (INAF-IASFPA),
C. B. Markwardt (NASA/GSFC), J. P. Osborne (U Leicester),
C. Pagani (U Leicester), K. L. Page (U Leicester), M. H. Siegel (PSU)
and M. Stamatikos (OSU/NASA/GSFC) report on behalf of the Swift Team:
At 07:33:21 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 110412A (trigger=451191). Swift did not slew to the location
because the position is in an observing constraint. The BAT on-board
calculated location is RA, Dec 133.492, +13.517 which is
RA(J2000) = 08h 53m 58s
Dec(J2000) = +13d 30' 60"
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 30 sec. The peak count rate
was ~600 counts/sec (15-350 keV), at ~20 sec after the trigger.
Due to a Moon observing constraint, Swift cannot slew to the BAT
position until 15:08 UT on 2011 April 14. There will thus be no XRT or
UVOT data for this trigger before this time.
Burst Advocate for this burst is J. M. Gelbord (jgelbord AT astro.psu.edu).
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 11926 table |
|---|
| GRB_name |
GRB110412A |
| GCN_number |
11926 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
7:33:35.710 UTC |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 11926
SUBJECT: GRB 110412A: Fermi GBM observation
DATE: 11/04/12 13:16:29 GMT
FROM: Arne Rau at MPE
Arne Rau (MPE) reports on behalf of the Fermi GBM Team:
"At 07:33:35.71 UT on 12 April 2011, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 110412A (trigger 07:33:35.71 / 110412315) which was also detected by the Swift/BAT
(Gelbord et al. 2011, GCN 11922). The GBM on-ground location is consistent with the Swift position.
The angle from the Fermi LAT boresight is 53 degrees.
The GBM light curve shows a single peak with a duration (T90) of about 16 s (50-300 keV).
The time-averaged spectrum from T0-1.5 s to T0+18.9 s is
best fit by a power law function with an exponential
high-energy cutoff. The power law index is -0.7 +/- 0.1 and
the cutoff energy, parameterized as Epeak, is 87 +/- 5 keV
The event fluence (10-1000 keV) in this time interval is
(2.2 +/- 0.1)E-06 erg/cm^2. The 1.024-sec peak photon flux measured
starting from T0+5.8 s in the 10-1000 keV band is 2.7 +/- 0.2 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|
| GCN 11929 table |
|---|
| GRB_name |
GRB110412A |
| GCN_number |
11929 |
| Detection_method |
Swift-BAT Det |
| ra |
133.4910° |
| decl |
13.4880° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 11929
SUBJECT: GRB 110412A: Swift-BAT refined analysis
DATE: 11/04/12 20:13:44 GMT
FROM: Scott Barthelmy at NASA/GSFC
W. H. Baumgartner (GSFC/UMBC), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC),
N. Gehrels (GSFC), J. M. Gelbord (PSU), H. A. Krimm (GSFC/USRA),
C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC),
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 recent telemetry downlinks,
we report further analysis of BAT GRB 110412A (trigger #451191)
(Gelbord, et al., GCN Circ. 11922). The BAT ground-calculated position is
RA, Dec = 133.491, 13.488 deg, which is
RA(J2000) = 08h 53m 57.9s
Dec(J2000) = +13d 29' 15.4"
with an uncertainty of 1.9 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 18%.
The mask-weighted light curve shows a FRED-like pulse starting at ~T+10 sec,
peaking at ~T+20 sec, and ending at ~T+45 sec. T90 (15-350 keV) is
23.4 +- 4.1 sec (estimated error including systematics).
The time-averaged spectrum from T+13.7 to T+40.4 sec is best fit by a simple
power-law model. The power law index of the time-averaged spectrum is
1.54 +- 0.14. The fluence in the 15-150 keV band is 1.8 +- 0.2 x 10^-6 erg/cm2.
The 1-sec peak photon flux measured from T+18.96 sec in the 15-150 keV band
is 2.0 +- 0.4 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/451191/BA/
|