2024MNRAS.530....1H

Query : 2024MNRAS.530....1H

2024MNRAS.530....1H - Mon. Not. R. Astron. Soc., 530, 1-19 (2024/May-1)

Multiband analyses of the bright GRB 230812B and the associated SN2023pel.

HUSSENOT-DESENONGES T., WOUTERS T., GUESSOUM N., ABDI I., ABULWFA A., ADAMI C., AGUI FERNANDEZ J.F., AHUMADA T., AIVAZYAN V., AKL D., ANAND S., ANDRADE C.M., ANTIER S., ATA S.A., D'AVANZO P., AZZAM Y.A., BARANSKY A., BASA S., BLAZEK M., BENDJOYA P., BERADZE S., BOUMIS P., BREMER M., BRIVIO R., BUAT V., BULLA M., BURKHONOV O., BURNS E., CENKO S.B., COUGHLIN M.W., CORRADI W., DAIGNE F., DIETRICH T., DORNIC D., DUCOIN J.-G., DUVERNE P.-A., ELHOSSEINY E.G., ELNAGAHY F.I., EL-SADEK M.A., FERRO M., LE FLOC'H E., FREEBERG M., FYNBO J.P.U., GOTZ D., GURBANOV E., HAMED G.M., HASANOV E., HEALY B.F., HEINTZ K.E., HELLO P., INASARIDZE R., ISKANDAR A., ISMAILOV N., IZZO L., JHAWAR S., JEGOU DU LAZ T., KAMEL T.M., KARPOV S., KLOTZ A., KOULOURIDIS E., KUIN N.P., KOCHIASHVILI N., LEONINI S., LU K.-X., MALESANI D.B., MASEK M., MAO J., MELANDRI A., MIHOV B.M., NATSVLISHVILI R., NAVARETE F., NEDORA V., NICOLAS J., ODEH M., PALMERIO J., PANG P.T.H., DE PASQUALE M., PENG H.W., PORMENTE S., PELOTON J., PRADIER T., PYSHNA O., RAJABOV Y., RAKOTONDRAINIBE N.A., RIVET J.-P., ROUSSELOT L., SACCARDI A., SASAKI N., SCHNEIDER B., SERRAU M., SHOKRY A., SLAVCHEVA-MIHOVA L., SIMON A., SOKOLIUK O., SRINIVASARAGAVAN G., STRAUSBAUGH R., TAKEY A., TANVIR N.R., THONE C.C., TILLAYEV Y., TOSTA E MELO I., TURPIN D., DE UGARTE POSTIGO A., VASYLENKO V., VERGANI S.D., VIDADI Z., XU D., WANG L.T., WANG X.F., WINTERS J.M., ZHANG X.-L. and ZHU Z.

Abstract (from CDS):

GRB 230812B is a bright and relatively nearby (z = 0.36) long gamma-ray burst (GRB) that has generated significant interest in the community and has thus been observed over the entire electromagnetic spectrum. We report over 80 observations in X-ray, ultraviolet, optical, infrared, and submillimetre bands from the GRANDMA (Global Rapid Advanced Network for Multimessenger Addicts) network of observatories and from observational partners. Adding complementary data from the literature, we then derive essential physical parameters associated with the ejecta and external properties (i.e. the geometry and environment) of the GRB and compare with other analyses of this event. We spectroscopically confirm the presence of an associated supernova, SN2023pel, and we derive a photospheric expansion velocity of v ∼ 17 × 103 km s–1. We analyse the photometric data first using empirical fits of the flux and then with full Bayesian inference. We again strongly establish the presence of a supernova in the data, with a maximum (pseudo-)bolometric luminosity of 5.75 × 1042 erg s–1, at $15.76^{+0.81}_{-1.21}$ d (in the observer frame) after the trigger, with a half-max time width of 22.0 d. We compare these values with those of SN1998bw, SN2006aj, and SN2013dx. Our best-fitting model favours a very low density environment ($\log _{10}({n_{\rm ISM}/{\rm cm}^{-3}}) = -2.38^{+1.45}_{-1.60}$) and small values for the jet's core angle $\theta _{\rm core} = 1.54^{+1.02}_{-0.81} \ \rm {deg}$ and viewing angle $\theta _{\rm obs} = 0.76^{+1.29}_{-0.76} \ \rm {deg}$. GRB 230812B is thus one of the best observed afterglows with a distinctive supernova bump.

Abstract Copyright: © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): methods: statistical - techniques: photometric - techniques: spectroscopic - gamma-ray burst: individual: GRB 230812B - gamma-ray bursts - transients: supernovae

Simbad objects: 23

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Number of rows : 23
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 SN 2002ap SN* 01 36 23.85 +15 45 13.2   13.11 14.54     SNIc-BL 587 1
3 SN 2005ek SN* 03 05 48.96 +36 46 10.6     17.5     SNIc: 76 1
4 SN 2006aj SN* 03 21 39.670 +16 52 02.27 17.96 19.11 17.40     SNIc-BL 1007 1
5 GRB 230307A gB 04 03 26.24 -75 22 43.8           ~ 221 0
6 GRB 171010A gB 04 26 19.41 -10 27 47.9           SNIc-BL 109 0
7 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
8 SN 2016jca SN* 06 06 51.36 -26 47 29.7           SNIc 140 0
9 SN 2010bh SN* 07 10 30.63 -56 15 19.7           SNIc 336 1
10 SN 2003lw SN* 08 02 30.1 -39 51 03       20.23   SNIc: 576 0
11 SN 2012bz SN* 09 07 38.38 +14 01 07.5           SNIb/c 193 1
12 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1261 1
13 GRB 140515A gB 12 24 15.48 +15 06 17.7           ~ 90 0
14 SDSS J140910.47+275320.8 G 14 09 10.47535 +27 53 20.8393           ~ 279 0
15 SN 2013dx SN* 14 29 14.77 +15 46 26.6           ~ 178 0
16 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 1012 1
17 SDSS J163631.47+475131.8 G 16 36 31.478 +47 51 31.86           ~ 1 0
18 SN 2023pel SN* 16 36 31.483 +47 51 32.26           SNIc-BL 8 0
19 GRB 230812B gB 16 36 31.49 +47 51 31.3           ~ 89 0
20 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1928 2
21 ESO 184-82 AG? 19 35 04.416 -52 50 38.04   15.17   14.26   ~ 113 2
22 Fermi bn160509374 gB 20 47 00.90 +76 06 30.1           ~ 141 0
23 Fermi bn090510016 G 22 14 12.6230 -26 34 58.550           ~ 548 0

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