| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB200224416 |
|
| T0 |
9:58:44 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
205.2470° |
GCN_circulars,IPN Triangulation |
| decl |
54.6690° |
GCN_circulars,IPN Triangulation |
| T90 |
0.064 s |
Fermi_GBM |
| T90_error |
1.922 s |
Fermi_GBM |
| T90_start |
9:58:44.535 UTC |
Fermi_GBM |
| fluence |
6.98e-08 erg/cm² |
Fermi_GBM |
| fluence_error |
9.74e-09 erg/cm² |
Fermi_GBM |
| T100 |
0.599 s |
|
| GBM_located |
False |
|
| mjd |
58903.41578703704 |
GCN_circulars,Fermi GBM final loc |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB200224416 |
| trigger_name |
bn200224416 |
| ra |
187.0200° |
| decl |
-19.5500° |
| pos_error |
9.70e+00° |
| datum |
2020-02-24 |
| t_trigger |
9:58:44.567 UTC |
| T90 |
0.064 s |
| T90_error |
1.922 s |
| T90_start |
9:58:44.535 UTC |
| fluence |
6.98e-08 erg/cm² |
| fluence_error |
9.74e-09 erg/cm² |
| flux_1024 |
6.48e-01 erg/cm²/s |
| flux_1024_error |
2.08e-01 erg/cm²/s |
| flux_1024_time |
-9.60e-01 erg/cm²/s |
| flux_64 |
6.95e+00 erg/cm²/s |
| flux_64_error |
1.23e+00 erg/cm²/s |
| GCN 27178 table |
|---|
| GRB_name |
GRB200224C |
| GCN_number |
27178 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
9:58:44 UTC |
| ra |
270.5000° |
| decl |
-56.8000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 27178
SUBJECT: GRB 200224C: Fermi GBM Final Real-time Localization
DATE: 20/02/24 10:09:03 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely SHORT GRB
At 09:58:44 UT on 24 Feb 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200224A (trigger 604231129.56693 / 200224416).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 270.5, Dec = -56.8 (J2000 degrees, equivalent to J2000 18h 02m, -56d 47'), with a statistical uncertainty of 6.0 degrees.
The angle from the Fermi LAT boresight is 151.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200224416/quicklook/glg_skymap_all_bn200224416.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200224416/quicklook/glg_healpix_all_bn200224416.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200224416/quicklook/glg_lc_medres34_bn200224416.gif
[GCN OPS NOTE(24feb20): This is the seventh Circular in the sequence of 8 circulars
which were all labeled A because of the sequence assigner being offline.
This circular was orginally, incorrectly labelled A, but the true letter identity is C.]
|
| GCN 27183 table |
|---|
| GRB_name |
GRB200224C |
| GCN_number |
27183 |
| Detection_method |
IPN Triangulation |
| t_trigger |
9:58:45 UTC |
| ra |
205.2470° |
| decl |
54.6690° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 27183
SUBJECT: IPN triangulation of GRB 200224C
DATE: 20/02/24 21:54:15 GMT
FROM: Dmitry Svinkin at Ioffe Institute
D. Svinkin and K. Hurley, on behalf of the IPN,
A. Goldstein, M. S. Briggs, and C. Wilson-Hodge
on behalf of the Fermi GBM team, and
A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo,
and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,
report:
The short-duration GRB 200224C (The Fermi GBM team, GCN Circ. 27178)
has been detected by Fermi (GBM trigger 604231129) and
INTEGRAL (SPI-ACS), so far, at about 35925 s UT (09:58:45).
We have triangulated this GRB to a GBM-INTEGRAL annulus centered at
RA(2000)=205.247 deg (13h 40m 59s) Dec(2000)=+54.669 deg (+54d 40' 10"),
whose radius is 82.665 +/- 2.948 deg (3 sigma).
The IPN localization is consistent with, but reduces the area of, the
Fermi GBM one.
This localization may be improved.
A triangulation map is posted at
http://www.ioffe.ru/LEA/GRBs/GRB200224_T35924/IPN/
|