GRB190320A

This page lists all entries on GRB190320A in GRBweb

Summary Fermi GBM IPN Swift GCN 23973 GCN 23974 GCN 23976 GCN 23977 GCN 23978 GCN 23979 GCN 23980 GCN 23981 GCN 23982

Summary table
Variable Value Source
GRB_name_Fermi GRB190320052
T0 1:14:15.464 UTC Fermi_GBM
ra 117.8486° Swift
decl -45.8878° Swift
pos_error 1.94e-04° Swift
T90 43.009 s Fermi_GBM
T90_error 8.738 s Fermi_GBM
T90_start 1:14:15.464 UTC Fermi_GBM
fluence 3.42e-06 erg/cm² Fermi_GBM
fluence_error 3.75e-08 erg/cm² Fermi_GBM
T100 84.536 s
GBM_located False
mjd 58562.05156787037 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB190320052
trigger_name bn190320052
ra 117.8108°
decl -45.8900°
pos_error 3.75e+00°
datum 2019-03-20
t_trigger 1:14:16.488 UTC
T90 43.009 s
T90_error 8.738 s
T90_start 1:14:15.464 UTC
fluence 3.42e-06 erg/cm²
fluence_error 3.75e-08 erg/cm²
flux_1024 1.93e+00 erg/cm²/s
flux_1024_error 1.72e-01 erg/cm²/s
flux_1024_time 2.94e+01 erg/cm²/s
flux_64 3.15e+00 erg/cm²/s
flux_64_error 8.59e-01 erg/cm²/s
IPN table
GRB_name GRB190320A
ra 117.8125°
decl -45.8833°
pos_error 5.00e-02°
Swift table
GRB_name GRB190320A
t_trigger 1:14:36 UTC
ra 117.8486°
decl -45.8878°
pos_error 1.94e-04°
T90 64.0 s
fluence 2.70e-06 erg/cm²
GCN 23973 table
GRB_name GRB190320A
GCN_number 23973
Detection_method Swift Det
t_trigger 1:14:36 UTC
ra 117.8110°
decl -45.8900°
Circular_text TITLE: GCN CIRCULAR NUMBER: 23973 SUBJECT: GRB 190320A: Swift detection of a burst DATE: 19/03/20 01:47:01 GMT FROM: Boris Sbarufatti at PSU J.D. Gropp (PSU), H. A. Krimm (NSF/USRA), A. Y. Lien (GSFC/UMBC), M. J. Moss (George Washington University), T. Sakamoto (AGU), B. Sbarufatti (PSU) and A. Tohuvavohu (PSU) report on behalf of the Neil Gehrels Swift Observatory Team: At 01:14:36 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 190320A (trigger=893808). Swift did not slew immediately due to an observing constraint. The BAT on-board calculated location is RA, Dec 117.811, -45.890 which is RA(J2000) = 07h 51m 15s Dec(J2000) = -45d 53' 22" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). There is a data gap from ~T+10 s to ~T+100 s, and the available data show no significant structure. However, since the image significance is 7.63 sigma, and the trigger is temporally (within ~ 20 sec) coincident with the Fermi/GBM event (trignum=574737261), we believe this is likely to be a real GRB. Due to an observing constraint, Swift will not slew until T0+44.3 minutes. There will be no XRT or UVOT data until this time. Burst Advocate for this burst is J.D. Gropp (jdg44 AT psu.edu). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/)
GCN 23974 table
GRB_name GRB190320A
GCN_number 23974
Detection_method Swift-XRT Other
ra 117.8489°
decl -45.8880°
Circular_text TITLE: GCN CIRCULAR NUMBER: 23974 SUBJECT: GRB 190320A: Swift-XRT observations DATE: 19/03/20 03:03:49 GMT FROM: Phil Evans at U of Leicester J.A. Kennea (PSU), G. Cusumano (INAF-IASF PA), M. Perri (ASDC), P.A. Evans (U. Leicester), J.P. Osborne (U. Leicester) and D.N. Burrows (PSU) report on behalf of the Swift-XRT team: The XRT began observing the field of GRB 190320A at 02:01:48.5 UT, 2831.9 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 117.84887, -45.88801 which is equivalent to: RA(J2000) = 07h 51m 23.73s Dec(J2000) = -45d 53' 16.8" with an uncertainty of 3.7 arcseconds (radius, 90% containment). This location is 95 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper. We cannot determine whether the source is fading at the present time. A power-law fit to a spectrum formed from promptly downlinked event data does not constrain the column density.
GCN 23976 table
GRB_name GRB190320A
GCN_number 23976
Detection_method Swift Other
ra 117.8482°
decl -45.8879°
Circular_text TITLE: GCN CIRCULAR NUMBER: 23976 SUBJECT: GRB190320A: MASTER OT detection DATE: 19/03/20 06:47:29 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, N.Tyurina, V.Kornilov, D.Vlasenko, V.Vladimirov, D.Zimnukhov, A.Kuznetsov, P.Balanutsa, A. Chasovnikov, V.Topolev, D.Kuvshinov (Lomonosov Moscow State University, SAI, Physics Department), R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O. Gress, N.M. Budnev, O.Ershova, Yu.Ishmuhametova, S.Yazev (Applied Physics Institute, Irkutsk State University), V. Yurkov, A. Gabovich, Yu. Sergienko, D. Kobcev (Blagoveschensk Educational State University), A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), R. Podesta, C. Lopez, C.Francile, F. Podesta (Observatorio Astronomico Felix Aguilar OAFA, San Juan National University), H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE, SJNU) MASTER-OAFA automatically pointed to Swift GRB 190320A (Kennea et al. GCN 23974, Gropp et al. GCN 23973, Lipunov et al. GCN 23975) detected MASTER OT J075123.56-455316.54 at position RA,Dec(2000)=07h 51m 23.56s , -45d 53m 16.54s Preliminary photometry is 2019-03-20 01:15:58.049 17.2 2019-03-20 01:19:25.483 17.4
GCN 23977 table
GRB_name GRB190320A
GCN_number 23977
Detection_method Swift-XRT Det
ra 117.8481°
decl -45.8879°
Circular_text TITLE: GCN CIRCULAR NUMBER: 23977 SUBJECT: GRB 190320A: Enhanced Swift-XRT position DATE: 19/03/20 07:52:54 GMT FROM: Phil Evans at U of Leicester J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team. Using 303 s of XRT Photon Counting mode data and 1 UVOT images for GRB 190320A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 117.84813, -45.88785 which is equivalent to: RA (J2000): 07h 51m 23.55s Dec (J2000): -45d 53' 16.3" with an uncertainty of 4.5 arcsec (radius, 90% confidence). This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177). This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN 23978 table
GRB_name GRB190320A
GCN_number 23978
Detection_method Fermi GBM Det
t_trigger 1:14:16.490 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 23978 SUBJECT: GRB 190320A: Fermi GBM observation DATE: 19/03/20 09:00:55 GMT FROM: Andreas von Kienlin at MPE A. von Kienlin (MPE), S. Poolakkil (UAH) and C. Meegan (UAH) report on behalf of the Fermi GBM Team: "At 01:14:16.49 UT on 20 March 2019, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 190320A (trigger 574737261 / 190320052), which was also detected by the Swift/BAT (Gropp et al. 2008, GCN 23973). The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight at the GBM trigger time is 59.7 degrees. The GBM light curve shows a structured pulse with a duration (T90) of about 43 s (50-300 keV). The time-averaged spectrum from T0-4.096 s to T0+32.769 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.75 +/- 0.07 and the cutoff energy, parameterized as Epeak, is 314 +/- 35 keV The event fluence (10-1000 keV) in this time interval is (6.7 +/- 0.4)E-06 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0+29.44 s in the 10-1000 keV band is 1.93 +/- 0.17 ph/s/cm^2. A Band function fits the spectrum equally well with Epeak= 296 +/- 51 keV, alpha = -0.74 +/- 0.09 and beta = -2.2 +/- 0.4. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog." [GCN OPS NOTE(20mar19): Per author's request, the extra zero was removed from the GRB name (in the title and the body): "1903020A" --> "190320A".]
GCN 23979 table
GRB_name GRB190320A
GCN_number 23979
Detection_method Swift Other
ra 117.8482°
decl -45.8879°
Circular_text TITLE: GCN CIRCULAR NUMBER: 23979 SUBJECT: GRB190320A: MASTER GRB counterpart decay DATE: 19/03/20 09:06:20 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, N.Tyurina, V.Kornilov, D.Vlasenko, V.Vladimirov, D.Zimnukhov, A.Kuznetsov, P.Balanutsa, A. Chasovnikov, V.Topolev, D.Kuvshinov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C. Lopez, C.Francile, F. Podesta (Observatorio Astronomico Felix Aguilar OAFA, San Juan National University), H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE, SJNU) R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O. Gress, N.M. Budnev, O.Ershova, Yu.Ishmuhametova, S.Yazev (Applied Physics Institute, Irkutsk State University), V. Yurkov, A. Gabovich, Yu. Sergienko, D. Kobcev (Blagoveschensk Educational State University), A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov (Kislovodsk Solar Stationof the Pulkovo Observatory), MASTER-OAFA robotic telescope (Global MASTER-Net http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy,vol. 2010, 30L) located in Argentina (OAFA observatory of San JuanNational University) was pointed to the Swift GRB190320A (Kennea et al. GCN 23974, Gropp et al. GCN 23973, Lipunov et al. GCN 23975) 21 sec after notice time (82 sec after trigger time) at 2019-03-20 01:15:58 UT (Lipunov et al. GCN 23975) MASTER-OAFA find a new object MASTER OT J075123.56-455316.54 (Lipunov et al. GCN 23976) within Swift GRB 190320A error box (Kennea et al. GCN 23976, Osborne et al. GCN23977) at position RA,Dec(2000)=07h 51m 23.56s , -45d 53m 16.54s (+-0.7") MASTER OT J075123.56-455316.54 decay by 1 magnitude during several minutes. The reduction is continued.
GCN 23980 table
GRB_name GRB190320A
GCN_number 23980
Detection_method Swift-BAT Det
ra 117.8240°
decl -45.8760°
Circular_text TITLE: GCN CIRCULAR NUMBER: 23980 SUBJECT: GRB 190320A: Swift-BAT refined analysis DATE: 19/03/20 11:41:19 GMT FROM: Hans Krimm at NSF/NASA-GSFC H. A. Krimm (NSF/USRA), S. D. Barthelmy (GSFC), J. R. Cummings (CPI), J.D. Gropp (PSU), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), T. N. Ukwatta (LANL) (i.e. the Swift-BAT team): Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 190320A (trigger #893808) (Gropp, et al., GCN Circ.23973). The BAT ground-calculated position is RA, Dec = 117.824, -45.876 deg which is RA(J2000) = 07h 51m 17.8s Dec(J2000) = -45d 52' 33.3" with an uncertainty of 1.9 arcmin, (radius, sys+stat, 90% containment). The partial coding was 29%. The mask-weighted light curve shows a single episode with some superimposed structure from roughly T-25 to T+40 sec. The spacecraft slewed away from the burst position at around T+500 sec. T90 (15-350 keV) is 64.0 +- 12.1 sec (estimated error including systematics). The time-averaged spectrum from T-27.20 to T+44.80 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.20 +- 0.20. The fluence in the 15-150 keV band is 2.7 +- 0.3 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T-0.20 sec in the 15-150 keV band is 1.3 +- 0.5 ph/cm2/sec. All the quoted errors are at the 90% confidence level. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/893808/BA/
GCN 23981 table
GRB_name GRB190320A
GCN_number 23981
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 23981 SUBJECT: GRB 190320A: Swift-XRT refined Analysis DATE: 19/03/20 11:55:11 GMT FROM: Phil Evans at U of Leicester K.L. Page (U. Leicester), V. D'Elia (ASDC), A. D'Ai (INAF-IASFPA), A. Melandri (INAF-OAB), D.N. Burrows (PSU), A. Tohuvavohu (PSU), S. J. LaPorte (PSU), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester) and J.D. Gropp report on behalf of the Swift-XRT team: We have analysed 6.8 ks of XRT data for GRB 190320A (Gropp et al. GCN Circ. 23973), from 2.8 ks to 22.2 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Osborne et al. (GCN Circ. 23977). The light curve can be modelled with a power-law decay with a decay index of alpha=1.26 (+0.17, -0.16). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 2.06 (+0.33, -0.21). The best-fitting absorption column is 3.33 (+1.48, -0.19) x 10^21 cm^-2, consistent with the Galactic value of 3.1 x 10^21 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.6 x 10^-11 (5.7 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 3.33 (+1.48, -0.19) x 10^21 cm^-2 Galactic foreground: 3.1 x 10^21 cm^-2 Excess significance: <1.6 sigma Photon index: 2.06 (+0.33, -0.21) If the light curve continues to decay with a power-law decay index of 1.26, the count rate at T+24 hours will be 2.1 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 7.5 x 10^-14 (1.2 x 10^-13) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00893808. This circular is an official product of the Swift-XRT team.
GCN 23982 table
GRB_name GRB190320A
GCN_number 23982
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 23982 SUBJECT: GRB 190320A: Swift/UVOT Upper Limits DATE: 19/03/20 16:22:03 GMT FROM: Frank Marshall at Swift/UVOT F. E. Marshall (NASA/GSFC) and J. D. Gropp (PSU) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 190320A 2834 s after the BAT trigger (Gropp et al., GCN Circ. 23973). No optical afterglow consistent with the XRT position (Lipunov et al. GCN Circ. 23976) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white_FC 2834 2984 147 >20.0 white 2834 16112 1213 >21.4 v 2992 21862 1645 >20.4 b 3812 15216 1082 >20.8 u 3607 3807 197 >19.6 w1 3402 3602 197 >19.5 m2 3196 22200 524 >19.8 w2 4223 20949 1776 >20.1 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.23 in the direction of the burst (Schlegel et al. 1998).