| Summary table |
|---|
| Variable |
Value |
Source |
| T0 |
3:29:34 UTC |
Swift |
| ra |
221.5668° |
Swift |
| decl |
20.6576° |
Swift |
| pos_error |
1.07e-03° |
Swift |
| GBM_located |
False |
|
| mjd |
59770.145532407405 |
Swift |
| IPN table |
|---|
| GRB_name |
GRB220710A |
| ra |
221.5917° |
| decl |
20.6500° |
| pos_error |
3.33e-02° |
| Swift table |
|---|
| GRB_name |
GRB220710A |
| t_trigger |
3:29:34 UTC |
| ra |
221.5668° |
| decl |
20.6576° |
| pos_error |
1.07e-03° |
| GCN 32375 table |
|---|
| GRB_name |
GRB220710A |
| GCN_number |
32375 |
| Detection_method |
Swift Other |
| ra |
221.5920° |
| decl |
20.6570° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 32375
SUBJECT: GRB 220710A: Swift/BAT-GUANO arcminute localization
DATE: 22/07/12 20:58:22 GMT
FROM: Aaron Tohuvavohu at U Toronto
Aaron Tohuvavohu (U Toronto), James DeLaunay (UAlabama), Gayathri
Raman (PSU), Jamie A. Kennea (PSU), report:
Swift/BAT did not localize GRB 220710A onboard (T0:
2022-07-10T03:29:34 UTC, GECAM trig utn220710_032932_GECAMb).
The GECAM notice, distributed in near real-time, triggered the Swift
Mission Operations Center operated Gamma-ray Urgent Archiver for Novel
Opportunities (GUANO; Tohuvavohu et al. 2020, ApJ, 900, 1).
Upon trigger by this notice, GUANO sent a command to the Swift Burst
Alert Telescope (BAT) to save 200 seconds of BAT event-mode data from
[-50,+150] seconds around the time of the burst. All the requested
event mode data was delivered to the ground.
The burst is detected in BAT with a duration of ~25 seconds.
The burst occurred during a Swift slew.
The burst position is found with an image SNR of 20.
The BAT position is
RA, Dec = 221.592, 20.657 deg which is
RA(J2000) = 14h 46m 22.08s
Dec(J2000) = 20d 39′ 25.2″
with an uncertainty of 2 arcmin.
XRT and UVOT follow-up has been requested
Results of follow-up observations will be reported in future circulars.
GUANO is a fully autonomous, extremely low latency, spacecraft
commanding pipeline designed for targeted recovery of BAT event mode
data around the times of compelling astrophysical events to enable
more sensitive GRB searches.
|
| GCN 32376 table |
|---|
| GRB_name |
GRB220710A |
| GCN_number |
32376 |
| Detection_method |
Swift Other |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 32376
SUBJECT: GRB 220710A: Swift ToO observations
DATE: 22/07/12 22:50:11 GMT
FROM: Phil Evans at U of Leicester
P. A. Evans (U. Leicester) reports on behalf of the Swift team:
Swift has initiated a ToO observation of the Swift/BAT-GUANO GRB 220710A.
Automated analysis of the XRT data will be presented online at
https://www.swift.ac.uk/ToO_GRBs/00021509
Any uncatalogued X-ray sources detected in this analysis will be
reported on this website and via GCN COUNTERPART notices. These are
not necessarily related to the Swift/BAT-GUANO event. Any X-ray source
considered to be a probable afterglow candidate will be reported via a
GCN Circular after manual consideration.
Details of the XRT automated analysis methods are detailed in Evans et
al. (2007, A&A, 469, 379; 2009, MNRAS, 397, 1177 and 2014, ApJS, 210, 8).
This circular is an official product of the Swift-XRT team.
|
| GCN 32385 table |
|---|
| GRB_name |
GRB220710A |
| GCN_number |
32385 |
| Detection_method |
Swift-XRT Other |
| ra |
221.5668° |
| decl |
20.6576° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 32385
SUBJECT: GRB 220710A: Swift-XRT afterglow detection
DATE: 22/07/13 16:37:22 GMT
FROM: Phil Evans at U of Leicester
A.P. Beardmore (U. Leicester), M. Capalbi (INAF-IASFPA), M. Perri (SSDC
& INAF-OAR), V. D'Elia (SSDC & INAF-OAR), J. D. Gropp (PSU), J.A.
Kennea (PSU), A. Tohuvavohu (U. Toronto), J.P. Osborne (U. Leicester)
and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team:
Swift-XRT has performed follow-up observations of the
Swift/BAT-GUANO-detected burst GRB 220710A, collecting 4.4 ks of Photon
Counting (PC) mode data between T0+242.5 ks and T0+287.4 ks.
An uncatalogued X-ray source is detected consistent with being within
197 arcsec of the Swift/BAT-GUANO position and is above the 2SXPS
3-sigma upper limit at this position, and is therefore likely the GRB
afterglow. The position of this source is RA, Dec=221.5668, +20.6576
which is equivalent to:
RA (J2000): 14:46:16.03
Dec(J2000): +20:39:27.3
with an uncertainty of 8.3 arcsec (radius, 90% confidence). This
position is 83 arcsec from the Swift/BAT-GUANO position. We cannot
determine at the present time whether the source is fading.
The results of the XRT-team automatic analysis of the likely afterglow
are at https://www.swift.ac.uk/ToO_GRBs/00021509/Source3.php.
The results of the full analysis of the XRT observations are available
at https://www.swift.ac.uk/ToO_GRBs/00021509.
This circular is an official product of the Swift-XRT team.
|
| GCN 32390 table |
|---|
| GRB_name |
GRB220710A |
| GCN_number |
32390 |
| Detection_method |
Swift-UVOT Other |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 32390
SUBJECT: GRB 220710A: Swift/UVOT Upper Limits
DATE: 22/07/14 06:28:25 GMT
FROM: Alice Breeveld at MSSL-UCL
A.A. Breeveld (UCL-MSSL) and N. J. Klingler (GSFC/UMBC/CRESTII) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 220710A 242493 s after the GECAM/GUANO
trigger (Tohuvavohu et al., GCN Circ. 32375).
No optical afterglow consistent with the XRT position (Beardmore et al. GCN Circ. 32385) is detected
in the UVOT exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf.
Proc. 1358, 373) for the initial exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white 242493 287404 4429 >22.9
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of
E(B-V) = 0.030 in the direction of the burst (Schlegel et al. 1998).
|