2018A&A...619A..66D


Query : 2018A&A...619A..66D

2018A&A...619A..66D - Astronomy and Astrophysics, volume 619A, 66-66 (2018/11-1)

GRB 171205A/SN 2017iuk: A local low-luminosity gamma-ray burst.

D'ELIA V., CAMPANA S., D'AI A., DE PASQUALE M., EMERY S.W.K., FREDERIKS D.D., LIEN A., MELANDRI A., PAGE K.L., STARLING R.L.C., BURROWS D.N., BREEVELD A.A., OATES S.R., O'BRIEN P.T., OSBORNE J.P., SIEGEL M.H., TAGLIAFERRI G., BROWN P.J., CENKO S.B., SVINKIN D.S., TOHUVAVOHU A. and TSVETKOVA A.E.

Abstract (from CDS):


Context. Gamma-ray bursts (GRBs) occurring in the local Universe constitute an interesting sub-class of the GRB family, since their luminosity is on average lower than that of their cosmological analogs. Attempts to understand in a global way this peculiar behaviour is still not possible, since the sample of low redshift GRBs is small, and the properties of individual objects are too different from each other. In addition, their closeness (and consequently high fluxes) make these sources ideal targets for extensive follow-up even with small telescopes, considering also that these GRBs are conclusively associated with supernova (SN) explosions.
Aims. We aim to contribute to the study of local bursts by reporting the case of GRB 171205A. This source was discovered by Swift Burst Alert Telescope (BAT) on 2017, December 5 and soon associated with a low redshift host galaxy (z=0.037), and an emerging SN (SN 2017iuk).
Methods. We analyzed the full Swift dataset, comprising the UV-Optical Telescope (UVOT), X-ray Telescope (XRT) and BAT data. In addition, we employed the Konus-Wind high energy data as a valuable extension at γ-ray energies.
Results. The photometric SN signature is clearly visible in the UVOT u, b and ν filters. The maximum emission is reached at ∼13 (rest frame) days, and the whole bump resembles that of SN 2006aj, but lower in magnitude and with a shift in time of +2d. A prebump in the ν-band is also clearly visible, and this is the first time that such a feature is not observed achromatically in GRB-SNe. Its physical origin cannot be easily explained. The X-ray spectrum shows an intrinsic Hydrogen column density NH,int=7.4+4.1–3.6x1020cm–2, which is at the low end of the N_H, int_, even considering just low redshift GRBs. The spectrum also features a thermal component, which is quite common in GRBs associated with SNe, but whose origin is still a matter of debate. Finally, the isotropic energy in the γ-ray band, Eiso=2.18+0.63–5.0x1049erg, is lower than those of cosmological GRBs. Combining this value with the peak energy in the same band, Ep=125+141–37keV, implies that GRB 171205A is an outlier of the Amati relation, as are some other low redshift GRBs, and its emission mechanism should be different from that of canonical, farther away GRBs.

Abstract Copyright: © ESO 2018

Journal keyword(s): gamma-ray burst: general - gamma-ray burst: individual: GRB 171205A - supernovae: individual: SN 2017iuk

Simbad objects: 12

goto Full paper

goto View the references in ADS

Number of rows : 12
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 SN 2010ma SN* 00 48 55.35 -34 33 59.5           SNIc 126 1
2 SN 2006aj SN* 03 21 39.670 +16 52 02.27 17.96 19.11 17.40     SNIc-BL 859 1
3 SN 2016jca SN* 06 06 51.37 -26 47 29.7           SNIc 64 0
4 SN 2010bh SN* 07 10 30.63 -56 15 19.7           SNIc 245 1
5 SN 2003lw SN* 08 02 30.1 -39 51 03       20.23   SNIc: 516 0
6 GRB 171205A gB 11 09 39.49 -12 35 18.7           ~ 97 0
7 2MASX J11093966-1235116 G 11 09 39.661 -12 35 11.62   15.96   15.00   ~ 9 0
8 SN 2013cq SN* 11 32 32.84 +27 41 56.2           SNIc 412 1
9 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1699 2
10 GRB 090618 gB 19 36 01.80 +78 21 07.1           ~ 283 0
11 GRB 060614 gB 21 23 32.140 -53 01 36.10 18.89 20.12 19.54     ~ 526 1
12 GRB 060505 gB 22 07 03.440 -27 48 51.89           ~ 233 1

To bookmark this query, right click on this link: simbad:objects in 2018A&A...619A..66D and select 'bookmark this link' or equivalent in the popup menu


2021.09.23-11:41:07

© Université de Strasbourg/CNRS

    • Contact