GRB 260614A
GCN Circular 44957
Subject
GRB 260614A: AstroSat CZTI detection
Date
2026-06-16T19:06:22Z (a month ago)
Edited On
2026-06-16T19:12:29Z (a month ago)
From
Anuraag Arya at IIT Bombay <aryaanuraag910@gmail.com>
Edited By
Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Anuraag Arya at IIT Bombay <aryaanuraag910@gmail.com>
Via
Web form
A. Goyal (IITB), A. Arya (IITB), Harsha K. H. (IUCAA), S. Salunke (IUCAA), M. Tembhurnikar (IUCAA), G. Waratkar (Caltech/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 long GRB 260614A which was also detected by Fermi (GBM team, GCN Circ. 44935), GECAM (Xing-Hao Luo et. al., GCN Circ. 44940).
The source was clearly detected in the CZT detectors in the 20-200 keV energy range. The light curve peaks at 2026-06-14 10:06:15.64. The measured peak count rate associated with the burst is 57 (+28, -14) counts/s above the background in the combined data of three quadrants (out of four), with a total of 391 (+196, -206) counts. The local mean background count rate was 221 (+3, -3) counts/s. We measure a T90 of 20 (+3, -12) s from the cumulative CZT light curve.
CZTI data products like interactive and downloadable light curves for this GRB can be found at:https://astrosat.iucaa.in/cift/cift_products/ET20260614T100614/ET20260614T100614_details.html
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 44940
Subject
GRB 260614A: GECAM-B observation
Date
2026-06-14T16:14:12Z (a month ago)
From
Xinghao Luo at IHEP <2952704891@qq.com>
Via
Web form
Xing-Hao Luo, Chen-Wei Wang, Shao-Lin Xiong (IHEP) report on behalf of GECAM team:
GECAM-B was triggered on-ground by GRB 260614A, at 2026-06-14T10:06:15.950 UTC (denoted as T0), which is also detected by Fermi/GBM (Fermi GBM team, GCN #44935).
According to the GECAM-B light curves in about 70-6000 keV, this burst mainly consists of multiple pulses with a duration (T90) of 20 +/-6 s.
The GECAM-B light curve can be found here:
https://www.bursthub.cn//admin/static/gecambgrb260614A.png
Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) mission originally consists of two micro-satellites (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 44935
Subject
GRB 260614A: Fermi GBM Final Localization
Date
2026-06-14T11:49:11Z (a month ago)
From
Rushikesh Sonawane at IISER TVM <rushikesh23@iisertvm.ac.in>
Via
Web form
The Fermi GBM team reports the detection of a likely LONG GRB
"At 10:06:14.62 UT on 14 June 2026, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 260614A (trigger 803124379/260614421).
The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 192.76, Dec = -38.51 (J2000 degrees, equivalent to J2000 12h 51m, -38d 30'),
with a statistical uncertainty of 6.04 degrees.
The angle from the Fermi LAT boresight is 106 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260614421/quicklook/glg_skymap_all_bn260614421.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260614421/quicklook/glg_healpix_all_bn260614421.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260614421/quicklook/glg_lc_medres34_bn260614421.gif"