GRB 240119A
GCN Circular 35594
Subject
Konus-Wind detection of GRB 240119A (short/hard)
Date
2024-01-22T15:40:27Z (2 years ago)
From
Dmitry Frederiks at Ioffe Institute <fred@mail.ioffe.ru>
Via
legacy email
D. Frederiks, A.Lysenko, A. Ridnaia, D. Svinkin,
A. Tsvetkova, M. Ulanov, and T. Cline,
on behalf of the Konus-Wind team, report:
The short GRB 240119A (Fermi-GBM detection: The Fermi GBM team, GCN 35583;
AstroSat-CZTI detection: Joshi et al.: GCN 35589;
GECAM-B detection: Zhang et al.: GCN 355921;
IPN triangulation: Svinkin et al., GCN 35592)
triggered Konus-Wind (KW) at T0=62945.465 s UT (17:29:05.465).
The burst light curve shows a single emission pulse
which starts at ~T0-0.032 s and has a duration of ~0.13 s.
The emission is seen up to ~2 MeV.
The Konus-Wind light curve of this GRB is available at
http://www.ioffe.ru/LEA/GRBs/GRB240119_T62945/
As observed by Konus-Wind, the burst had
a total fluence of (8.1 ± 1.7)x10^-7 erg/cm^2 and
a 16-ms peak energy flux, measured from T0-0.016 s,
of (1.9 ± 0.4)x10^-5 erg/cm^2/s (both in the 20 keV - 10 MeV energy range).
The spectrum of the burst (measured from T0-0.048 s to T0+0.080 s)
can be described, in the 20 keV - 1.5 MeV range, by a power law with
exponential cutoff (CPL) model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep)
with alpha = -0.23(-0.32,+0.40) and Ep = 678(-141,+254) keV.
All the quoted errors are estimated at the 68% confidence level.
All the presented results are preliminary.
GCN Circular 35592
Subject
IPN triangulation of GRB 240119A (short)
Date
2024-01-22T14:47:24Z (2 years ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
Via
legacy email
D. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko,
and T. Cline on behalf of the Konus-Wind team,
A. Goldstein, M. S. Briggs, C. Wilson-Hodge,
and E. Burns on behalf of the Fermi GBM team,
E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,
and
S. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu
on behalf of the Swift-BAT team, report:
The bright, short-duration GRB 240119A
(Fermi-GBM detection: The Fermi GBM team, GCN 35583;
AstroSat-CZTI detection: Joshi et al.: GCN 35589;
GECAM-B detection: Zhang et al.: GCN 35591)
was detected by Fermi (GBM trigger 727378152), INTEGRAL (SPI-ACS),
Swift (BAT), Konus-Wind, AstroSat (CZTI), and GECAM-B
at about 62948 s UT (17:29:08).
The burst was outside the coded field of view of the BAT.
We have triangulated it to a preliminary, 3 sigma error box
whose coordinates are:
---------------------------------------------
RA(2000), deg Dec(2000), deg
---------------------------------------------
Center:
359.940 (23h 59m 46s) -75.259 (-75d 15' 33")
Corners:
342.700 (22h 50m 48s) -82.193 (-82d 11' 33")
343.891 (22h 55m 34s) -82.325 (-82d 19' 29")
4.927 (00h 19m 42s) -67.683 (-67d 41' 00")
4.404 (00h 17m 37s) -67.603 (-67d 36' 12")
---------------------------------------------
The error box area is 3.2 sq. deg, and its maximum
dimension is 15.4 deg (the minimum one is 12.5 arcmin).
The Sun distance was 62 deg.
This localization may be improved.
The IPN localization is consistent with, but reduces the area of,
the Fermi-GBM localizations.
A triangulation map and HEALPix FITS file are posted at
http://www.ioffe.ru/LEA/GRBs/GRB240119_T62945/IPN/
The Konus-Wind time history and spectrum will be given
in a forthcoming GCN Circular.
GCN Circular 35591
Subject
GRB 240119A: GECAM detection of a short burst
Date
2024-01-21T07:42:30Z (2 years ago)
From
wenlongzhang2018@163.com
Via
Web form
Wen-Long Zhang, Shao-Lin Xiong, Chen-Wei Wang, Yue Wang, Yan-Qiu Zhang report on behalf of the GECAM team:
GECAM-B was triggered in-flight by a short burst, GRB 240119A, at 2024-01-19T17:29:07.700 UTC (T0), which was also detected by Fermi/GBM (GCN #35583) and AstroSat CZTI (GCN #35589). At the same time, GECAM-C was also triggered on-ground by this burst.
According to the light curves, this burst shows a total duration of ~0.1 sec (20-1000 keV).
According to the in-flight software, GECAM-B localized this burst to the following position (J2000):
Ra: 355.51 deg
Dec: -81.39 deg
Err: 5.76 deg (1-sigma, statistical only)
This GECAM-B localization is consistent with that of Fermi/GBM within the error.
We note that these results are very preliminary. Refined analysis will be reported later.
Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor(GECAM) mission originally consists of two microsatellites (GECAM-A and GECAM-B) launched in Dec. 2020. As the third member of GECAM constellation, GECAM-C was launched onboard SATech-01 experimental satellite in July 2022. GECAM mission is funded by the Chinese Academy of Sciences (CAS).
GCN Circular 35589
Subject
GRB 240119A: AstroSat CZTI detection of a short burst
Date
2024-01-21T06:57:24Z (2 years ago)
From
Gaurav Waratkar at IIT Bombay <gauravwaratkar@iitb.ac.in>
Via
Web form
J. Joshi (IUCAA), G. Waratkar (IITB), A. Vibhute (IUCAA), V. Bhalerao (IITB), D. Bhattacharya (Ashoka University/IUCAA), A. R. Rao (IUCAA/TIFR), and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration:
Analysis of AstroSat CZTI data with the CIFT framework (Sharma et al., 2021, JApA, 42, 73) showed the detection of a short-duration GRB 240119A which was also detected by Fermi-GBM (Fermi GBM team, GCN Circ. 35583).
The source was detected in the CZT detectors in the 20-200 keV energy range. The light curve peaks at 2024-01-19 17:29:07.67 UTC. The measured peak count rate associated with the burst is 1304 (+583, -314) counts/s above the background in the combined data of three quadrants (out of four), with a total of 53 (+17, -18) counts. The local mean background count rate was 250 (+25, -36) counts/s. Using cumulative rates, we measure a T90 of 0.06 (+0.02, -0.03) s.
The source was also faintly detected in the CsI anticoincidence (Veto) detector in the 100-500 keV energy range but we cannot make quantitative inferences due to the intrinsic 1 s binning of Veto data.
CZTI is built by a TIFR-led consortium of institutes across India, including VSSC, URSC, IUCAA, SAC, and PRL. The Indian Space Research Organisation funded, managed, and facilitated the project.
CZTI GRB detections are reported regularly on the payload site at:
http://astrosat.iucaa.in/czti/?q=grb
GCN Circular 35585
Subject
Fermi GRB 240119A: Global MASTER-Net observations report
Date
2024-01-20T00:46:03Z (2 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
legacy email
V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko,
G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij
(Lomonosov Moscow State University, SAI, Physics Department),
R. Podesta, C.Lopez, F. Podesta, C.Francile
(Observatorio Astronomico Felix Aguilar OAFA),
R. Rebolo, M. Serra
(The Instituto de Astrofisica de Canarias),
D. Buckley
(South African Astronomical Observatory),
O.A. Gress, N.M. Budnev, O.Ershova
(Irkutsk State University, API),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,
A.R.Corella, L.H.Rodriguez
(INAOE, Guillermo Haro Astrophysics Observatory),
A. Tlatov, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory),
V. Yurkov, A. Gabovich
(Blagoveschensk Educational State University)
MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 240119A ( "The Fermi GBM team, GCN 35583) errorbox 24476 sec after notice time and 24484 sec after trigger time at 2024-01-20 00:17:12 UT, with upper limit up to 19.8 mag. The observations began at zenith distance = 52 deg. The sun altitude is -33.6 deg.
The galactic latitude b = -22 deg., longitude l = 299 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2360174
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
24514 | 2024-01-20 00:17:12 | MASTER-SAAO | (10h 07m 17.25s , -84d 10m 49.7s) | C | 60 | 19.6 |
24514 | 2024-01-20 00:17:12 | MASTER-SAAO | (10h 25m 18.35s , -84d 23m 42.8s) | C | 60 | 19.5 |
24594 | 2024-01-20 00:18:31 | MASTER-SAAO | (09h 30m 35.62s , -82d 17m 59.7s) | C | 60 | 19.7 |
24594 | 2024-01-20 00:18:31 | MASTER-SAAO | (09h 44m 15.29s , -82d 30m 47.6s) | C | 60 | 19.5 |
24674 | 2024-01-20 00:19:51 | MASTER-SAAO | (11h 24m 48.94s , -82d 18m 00.4s) | C | 60 | 19.8 |
24674 | 2024-01-20 00:19:51 | MASTER-SAAO | (11h 38m 19.63s , -82d 31m 09.3s) | C | 60 | 19.6 |
24753 | 2024-01-20 00:21:10 | MASTER-SAAO | (11h 21m 22.33s , -86d 04m 09.3s) | C | 60 | 19.6 |
24753 | 2024-01-20 00:21:10 | MASTER-SAAO | (11h 48m 01.32s , -86d 17m 30.3s) | C | 60 | 19.6 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
GCN Circular 35583
Subject
GRB 240119A: Fermi GBM Final Localization
Date
2024-01-19T21:51:28Z (2 years ago)
From
Vidushi Sharma at NASA GSFC/UMBC <vidushi.sharma@nasa.gov>
Via
Web form
The Fermi GBM team report the detection of a likely SHORT GRB:
"At 17:29:07.68 UT on 19 January 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240119A (trigger 727378152/240119729).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 152.7, Dec = -83.6 (J2000 degrees, equivalent to J2000 10h 10m, 83d 36'), with a statistical uncertainty of 5.1 degrees.
The angle from the Fermi LAT boresight is 153.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240119729/quicklook/glg_skymap_all_bn240119729.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240119729/quicklook/glg_healpix_all_bn240119729.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240119729/quicklook/glg_lc_medres34_bn240119729.gif."