| Summary table |
|---|
| Variable |
Value |
Source |
| T0 |
10:42:10 UTC |
GCN_circulars,Swift Det |
| ra |
57.1780° |
Swift |
| decl |
45.0740° |
Swift |
| pos_error |
2.33e-02° |
Swift |
| GBM_located |
False |
|
| mjd |
59334.44594907408 |
GCN_circulars,Swift Det |
| IPN table |
|---|
| GRB_name |
GRB210430A |
| ra |
57.1833° |
| decl |
45.0833° |
| pos_error |
5.00e-02° |
| Swift table |
|---|
| GRB_name |
GRB210430A |
| t_trigger |
10:42:10 UTC |
| ra |
57.1780° |
| decl |
45.0740° |
| pos_error |
2.33e-02° |
| GCN 29914 table |
|---|
| GRB_name |
GRB210430A |
| GCN_number |
29914 |
| Detection_method |
Swift Det |
| t_trigger |
10:42:10 UTC |
| ra |
57.1780° |
| decl |
45.0740° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 29914
SUBJECT: GRB 210430A: Swift detection of a burst
DATE: 21/04/30 13:19:58 GMT
FROM: Amy Lien at GSFC
B. Sbarufatti (PSU), A. Y. Lien (GSFC/UMBC) and
A. Tohuvavohu (U Toronto) report on behalf of the Neil Gehrels Swift
Observatory Team:
At 10:42:10 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210430A (trigger= 1046014). Swift did not slew immediately
due to an observing constraint.
The BAT on-board calculated location is
RA, Dec 57.178, +45.074 which is
RA(J2000) = 03h 48m 43s
Dec(J2000) = +45d 03' 31"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). With the currently available data from
~T-50 s to ~T+30 s, the BAT light curve showed a single-peaked
structure with a duration of about 10 sec. The peak count rate
was ~500 counts/sec (15-350 keV), at ~2 sec after the trigger.
The BAT position is sun-constrained for Swift until July 8 2021,
there will be no XRT or UVOT followup before this time.
Burst Advocate for this burst is B. Sbarufatti (bxs60 AT 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/)
|
| GCN 29918 table |
|---|
| GRB_name |
GRB210430A |
| GCN_number |
29918 |
| Detection_method |
Swift-BAT Det |
| ra |
57.1850° |
| decl |
45.0800° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 29918
SUBJECT: GRB 210430A: Swift-BAT refined analysis
DATE: 21/05/01 00:02:11 GMT
FROM: Amy Lien at GSFC
H. A. Krimm (NSF), S. D. Barthelmy (GSFC),
J. R. Cummings (CPI), S. Laha (GSFC/UMBC),
A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC),
D. M. Palmer (LANL), T. Sakamoto (AGU),
B. Sbarufatti (PSU), M. Stamatikos (OSU),
T. N. Ukwatta (LANL) (i.e. the Swift-BAT team):
Using the data set from T-240 to T+962 sec from the recent telemetry
downlink, we report further analysis of BAT GRB 210430A (trigger #1046014)
(Sbarufatti et al., GCN Circ. 29914). The BAT ground-calculated
position is RA, Dec = 57.185, 45.080 deg which is
RA(J2000) = 03h 48m 44.3s
Dec(J2000) = +45d 04' 46.9"
with an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 25%.
The mask-weighted light curve shows a single-peaked structure
that starts at ~T-3 s, peaks at ~T+2 s, and ends at ~T+15 s.
T90 (15-350 keV) is 11.53 +- 2.83 sec (estimated error including
systematics).
The time-averaged spectrum from T-2.72 to T+14.60 sec is best fit
by a simple power-law model. The power law index of the time-averaged
spectrum is 2.15 +- 0.21. The fluence in the 15-150 keV band is
9.9 +- 1.3 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from
T+1.14 sec in the 15-150 keV band is 1.9 +- 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/1046014/BA/
|
| GCN 29921 table |
|---|
| GRB_name |
GRB210430A |
| GCN_number |
29921 |
| Detection_method |
Optical |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 29921
SUBJECT: GRB 210430A: BOOTES-1 optical limit
DATE: 21/05/01 18:10:01 GMT
FROM: Youdong HU at IAA-CSIC
T.-R Sun, Y.-D. Hu, E. Fernandez-Garcia, A. J. Castro-Tirado, M.D. Caballero-Garcia, M. A. Castro Tirado, F. Rendon (IAA-CSIC), C. Perez del Pulgar, A. Castellon and A. J. Reina (Univ. de Malaga) on behalf of a larger collaboration, report:
Following the detection of GRB 210430A by Swift (Moss et al. GCNC 29918), we triggered the 0.3m BOOTES-1B robotic telescope at the BOOTES-1 astronomical station at ESAt/INTA-CEDEA in Mazagn (Huelva, Spain), gathering images starting on Apr 30, 20:30 UT, about 9.8 hours after the onset of the GRB. After co-adding the corresponding images, nothing is found within the GRB 210430A error box down to 18.4 limiting magnitude, after calibrating the image with G mag in the GAIA DR2 catalogue.
We thank the staff at INTA-CEDEA for their excellent support.
|