GRB200327A

This page lists all entries on GRB200327A in GRBweb

Summary Fermi GBM IPN GCN 27458 GCN 27459 GCN 27461 GCN 27463 GCN 27466 GCN 27525

Summary table
Variable Value Source
GRB_name_Fermi GRB200327873
T0 20:56:48 UTC GCN_circulars,Fermi GBM final loc
ra 236.5750° IPN
decl -4.2167° IPN
pos_error 3.60e+00° IPN
T90 0.64 s Fermi_GBM
T90_error 0.59 s Fermi_GBM
T90_start 20:56:48.101 UTC Fermi_GBM
fluence 1.26e-06 erg/cm² Fermi_GBM
fluence_error 1.91e-08 erg/cm² Fermi_GBM
T100 0.741 s
GBM_located False
mjd 58935.872777777775 GCN_circulars,Fermi GBM final loc
Fermi GBM table
GRB_name_Fermi GRB200327873
trigger_name bn200327873
ra 236.5400°
decl -4.2169°
pos_error 8.50e+00°
datum 2020-03-27
t_trigger 20:56:48.165 UTC
T90 0.64 s
T90_error 0.59 s
T90_start 20:56:48.101 UTC
fluence 1.26e-06 erg/cm²
fluence_error 1.91e-08 erg/cm²
flux_1024 4.92e+00 erg/cm²/s
flux_1024_error 2.87e-01 erg/cm²/s
flux_1024_time -2.56e-01 erg/cm²/s
flux_64 1.92e+01 erg/cm²/s
flux_64_error 1.42e+00 erg/cm²/s
IPN table
GRB_name GRB200327A
ra 236.5750°
decl -4.2167°
pos_error 3.60e+00°
GCN 27458 table
GRB_name GRB200327A
GCN_number 27458
Detection_method Fermi GBM final loc
t_trigger 20:56:48 UTC
ra 233.4000°
decl 2.4000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 27458 SUBJECT: GRB 200327A: Fermi GBM Final Real-time Localization DATE: 20/03/27 21:07:11 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely SHORT GRB At 20:56:48 UT on 27 Mar 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200327A (trigger 607035413.165342 / 200327873). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 233.4, Dec = 2.4 (J2000 degrees, equivalent to J2000 15h 33m, 2d 23'), with a statistical uncertainty of 17.5 degrees. The angle from the Fermi LAT boresight is 109.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200327873/quicklook/glg_skymap_all_bn200327873.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/bn200327873/quicklook/glg_healpix_all_bn200327873.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200327873/quicklook/glg_lc_medres34_bn200327873.gif
GCN 27459 table
GRB_name GRB200327A
GCN_number 27459
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 27459 SUBJECT: Fermi trigger No 607035413: Global MASTER-Net observations report DATE: 20/03/27 22:31:34 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (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 200327A ( Fermi GBM team, GCN 27458) errorbox 2773 sec after notice time and 2803 sec after trigger time at 2020-03-27 21:43:31 UT, with upper limit up to 19.8 mag. The observations began at zenith distance = 62 deg. The sun altitude is -57.6 deg. The galactic latitude b = 43 deg., longitude l = 8 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1323666 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 2833 | 2020-03-27 21:43:31 | MASTER-SAAO | (15h 44m 24.56s , -11d 52m 31.7s) | C | 60 | 19.6 | 2833 | 2020-03-27 21:43:31 | MASTER-SAAO | (15h 51m 31.06s , -11d 51m 56.8s) | C | 60 | 19.6 | 3204 | 2020-03-27 21:49:41 | MASTER-SAAO | (15h 44m 16.74s , -11d 54m 34.4s) | C | 60 | 19.6 | 3204 | 2020-03-27 21:49:41 | MASTER-SAAO | (15h 51m 23.36s , -11d 53m 57.9s) | C | 60 | 19.6 | 3667 | 2020-03-27 21:57:25 | MASTER-SAAO | (15h 37m 49.74s , -09d 53m 23.0s) | C | 60 | 19.7 | 3667 | 2020-03-27 21:57:25 | MASTER-SAAO | (15h 44m 53.62s , -09d 52m 44.8s) | C | 60 | 19.7 | 3759 | 2020-03-27 21:58:57 | MASTER-SAAO | (15h 54m 06.40s , -09d 52m 26.4s) | C | 60 | 19.6 | 3759 | 2020-03-27 21:58:57 | MASTER-SAAO | (16h 01m 10.19s , -09d 51m 48.9s) | C | 60 | 19.6 | 4036 | 2020-03-27 22:03:34 | MASTER-SAAO | (15h 37m 54.80s , -09d 54m 01.9s) | C | 60 | 19.7 | 4036 | 2020-03-27 22:03:34 | MASTER-SAAO | (15h 44m 58.77s , -09d 53m 23.6s) | C | 60 | 19.8 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
GCN 27461 table
GRB_name GRB200327A
GCN_number 27461
Detection_method Fermi GBM Other
ra 233.4000°
decl 2.4000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 27461 SUBJECT: GRB 200327A: AGILE/MCAL observations DATE: 20/03/28 10:13:16 GMT FROM: Alessandro Ursi at INAF/IAPS A. Ursi (INAF/IAPS), F. Verrecchia (SSDC, and INAF/OAR), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), A. Argan, M. Cardillo, C. Casentini, Y. Evangelista, G. Piano (INAF/IAPS), F. Lucarelli, C. Pittori, (SSDC, and INAF/OAR), A. Bulgarelli, V. Fioretti, F. Fuschino, N. Parmiggiani (INAF/OAS-Bologna), M. Marisaldi (INAF/OAS-Bologna, and Bergen University), M. Pilia, A. Trois (INAF/OA-Cagliari), I. Donnarumma (ASI), F. Longo (Univ. Trieste and INFN Trieste), A. Giuliani (INAF/IASF-Mi), report on behalf of the AGILE Team: The AGILE satellite detected the short burst GRB 200327A reported by Fermi/GBM (GCN #27458), that also triggered the automatic AGILE Mini-CALorimeter (MCAL) GRB alert Notice (ID 512427408), published at: https://gcn.gsfc.nasa.gov/agile_mcal.html. The event was detected by MCAL at T0 = 2020-03-27 20:56:48.25 +/- 0.01 s (UTC), lasting ~0.13 s and releasing a total number of ~150 counts in the detector, above a background rate of ~530 Hz. The MCAL light curve can be found at: http://www.agilescienceapp.it/notices/GRB_067116_512427408.252268.png. The time-integrated spectrum of the burst in 0.13 s can be fitted in the energy range 0.4-10 MeV with a single power-law with ph.ind. = 2.56 -0.43/+0.54, resulting in a reduced chi-squared of 1.19 (8 d.o.f.). The burst fluence in the same energy range and time interval is 6.34e-07 erg/cm^2 (90% confidence level). At the T0, the event localization according to Fermi/GBM, RA = 233.4, Dec = 2.4 (J2000) was outside the AGILE Gamma-Ray Imaging Detector (GRID) Field-of-View. The AGILE-MCAL detector is a CsI detector with a 4 pi FoV, sensitive in the energy range 0.4-100 MeV. Additional analysis of AGILE data is in progress.
GCN 27463 table
GRB_name GRB200327A
GCN_number 27463
Detection_method IPN Triangulation
t_trigger 20:56:48 UTC
ra 236.5740°
decl -4.2170°
Circular_text TITLE: GCN CIRCULAR NUMBER: 27463 SUBJECT: IPN triangulation of 200327A (short) DATE: 20/03/28 17:40:04 GMT FROM: Dmitry Svinkin at Ioffe Institute D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks, A. Ridnaia, and T. Cline on behalf of the Konus-Wind team, K. Hurley, on behalf of the IPN, A. Goldstein, M. S. Briggs, and C. Wilson-Hodge on behalf of the Fermi GBM team, A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo, and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, and S. Barthelmy, J. Cummings, H. Krimm, and D. Palmer, on behalf of the Swift-BAT team, report: The short-duration GRB 200327A (Fermi-GBM detection: The Fermi GBM Team, GCN Circ. 27458; AGILE-MCAL detection: Ursi, et al., GCN Circ. 27461) was detected by Fermi (GBM trigger 607035413), Konus-Wind, INTEGRAL (SPI-ACS), AGILE (MCAL), and Swift (BAT) at about 75408 s UT (20:56:48). 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: 236.574 (15h 46m 18s) -4.217 ( -4d 13' 02") Corners: 236.885 (15h 47m 32s) -2.457 ( -2d 27' 24") 236.477 (15h 45m 54s) -5.963 ( -5d 57' 48") 236.244 (15h 44m 59s) -5.977 ( -5d 58' 36") 236.654 (15h 46m 37s) -2.472 ( -2d 28' 18") --------------------------------------------- The error box area is 2897 sq. arcmin, and its maximum dimension is 3.6 deg (the minimum one is 13.7 arcmin). The Sun distance was 130 deg. This box may be improved. The IPN localization is consistent with, but reduces the area of, the Fermi-GBM final position (GCN Circ. 27458). A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB200327_T75409/IPN The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular.
GCN 27466 table
GRB_name GRB200327A
GCN_number 27466
Detection_method Fermi GBM Det
t_trigger 20:56:48.170 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 27466 SUBJECT: GRB 200327A: Fermi GBM detection DATE: 20/03/29 01:40:48 GMT FROM: Peter Veres at UAH P. Veres and C. Meegan (both UAH) report on behalf of the Fermi GBM Team: "At 20:56:48.17 UT on 27 March 2020, the Fermi Gamma-Ray Burst Monitor (GBM) triggered and located GRB 200327A (trigger 607035413 / 200327873) which was also detected by AGILE-MCAL (Ursi et al., GCN 27461) and localized by IPN (Svinkin et al., GCN 27463). The GBM on-ground location is consistent with the IPN position. The angle from the Fermi LAT boresight at the GBM trigger time is 104 degrees. The GBM light curve consists of two pulses with a duration (T90) of about 0.64 s (50-300 keV). The time-averaged spectrum from T0-64 ms to T0+192 ms is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.60 +/- 0.09 and the cutoff energy, parameterized as Epeak, is 1100 +/- 180 keV. The event fluence (10-1000 keV) in this time interval is (1.53 +/- 0.06)E-6 erg/cm^2. The 64 ms peak photon flux measured starting from T0+64 ms in the 10-1000 keV band is 19.2 +/- 1.4 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog: https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html For Fermi GBM data and info, please visit the official Fermi GBM Support Page: https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/"
GCN 27525 table
GRB_name GRB200327A
GCN_number 27525
Detection_method Konus-Wind Det
t_trigger 20:56:49.744 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 27525 SUBJECT: Konus-Wind observation of GRB 200327A DATE: 20/04/10 13:15:13 GMT FROM: Dmitry Svinkin at Ioffe Institute D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks, M. Ulanov, A. Tsvetkova, A. Lysenko, A. Ridnaia, and T. Cline on behalf of the Konus-Wind team, report: The short-duration GRB 200327A (Fermi-GBM detection: The Fermi GBM Team, GCN Circ. 27458; Veres and Meegan, GCN Circ. 27466; AGILE-MCAL detection: Ursi, et al., GCN Circ. 27461; IPN triangulation: Svinkin et al., GCN Circ. 27463) triggered Konus-Wind at T0=75409.744 s UT (20:56:49.744). The burst light curve shows a double-peaked structure which starts at ~T0-0.1 s and has a total duration of ~0.2 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/GRB200327_T75409/ As observed by Konus-Wind, the burst had a fluence of 2.32(-0.67,+0.82)x10^-6 erg/cm2, and a 16-ms peak flux, measured from T0-0.016 s, of 2.45(-1.16,+1.37)x10^-5 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-averaged spectrum of the burst (measured from T0 to T0+0.064 s) is best fit in the 20 keV - 10 MeV range by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) with alpha = -0.56(-0.36,+0.52) and Ep = 1323(-545,+961) keV (chi2 = 11/14 dof). Fitting by a GRB (Band) model yields the same alpha and Ep, and an upper limit on the high energy photon index: beta < -2 (chi2 = 11/13 dof). All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.