2022A&A...666A..82R


Query : 2022A&A...666A..82R

2022A&A...666A..82R - Astronomy and Astrophysics, volume 666A, 82 (2022/10-1)

Type IIP supernova SN2016X in radio frequencies.

RUIZ-CARMONA R., SFARADI I. and HORESH A.

Abstract (from CDS):


Context. The study of radio emission from core-collapse supernovae (SNe) probes the interaction of the ejecta with the circumstellar medium (CSM) and reveals details of the mass-loss history of the progenitor.
Aims. We report observations of the type IIP supernova SN 2016X during the plateau phase, at ages between 21 and 75 days, obtained with the Karl G. Jansky Very Large Array (VLA) radio observatory.
Methods. We modelled the radio spectra as self-absorbed synchrotron emission, and we characterised the shockwave and the mass-loss rate of the progenitor. We also combined our results with previously reported X-ray observations to verify the energy equipartition assumption.
Results. The properties of the shockwave are comparable to other type IIP supernovae. The shockwave expands according to a self-similar law R ∝ tm with m = 0.76 ± 0.08, which is notably different from a constant expansion. The corresponding shock velocities are approximately 10700-8000 km s–1 during the time of our observations. The constant mass-loss rate of the progenitor is Ṁ = (7.8 ± 0.9) × 10–7α–8/19B/0.1)–1M yr–1, for an assumed wind velocity of 10 km s–1. We observe spectral steepening in the optically thin regime at the earlier epochs, and we demonstrate that it is caused by electron cooling via the inverse Compton effect. We show that the shockwave is characterised by a moderate deviation from energy equipartition by a factor of ϵeB ≈ 28, being the second type IIP supernova to show such a feature.

Abstract Copyright: © R. Ruiz-Carmona et al. 2022

Journal keyword(s): stars: mass-loss - supernovae: general - supernovae: individual: ASASSN-16at, SN 2016X - circumstellar matter - galaxies: individual: UGC 08041 - radio continuum: general

Simbad objects: 18

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Number of rows : 18
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 SN 2014cx SN* 00 59 47.83 -07 34 18.6           SNIIP 39 1
2 SN 2002ap SN* 01 36 23.85 +15 45 13.2   13.11 14.54     SNIc-BL 564 1
3 SN 2013ej SN* 01 36 48.16 +15 45 31.0           SNIIP 202 0
4 SN 1999em SN* 04 41 27.04 -02 51 45.2   13.79 13.7     SNIIP 676 1
5 2MASS J07371703+6535579 HXB 07 37 17.0432126424 +65 35 57.826001220           SNIIP 282 1
6 SN 1999gi SN* 10 18 16.66 +41 26 28.2   14.8       SNIIP 236 1
7 SN 2012aw SN* 10 43 53.735 +11 40 17.63       15   SNIIP 205 1
8 SN 2020oi SN* 12 22 54.930 +15 49 24.96           SNIc 56 0
9 QSO J1246-0730 QSO 12 46 04.23211565 -07 30 46.5746985   17.6 18.0 18.2   ~ 186 1
10 UGC 8041 EmG 12 55 12.6507011952 +00 07 00.036186204   14.694   16.214 12.7 ~ 142 0
11 SN 2016X SN* 12 55 15.50 +00 05 59.7           SNIIP 43 0
12 SN 2011ja SN* 13 05 11.12 -49 31 27.0           SNIIP 44 0
13 SN 2005cs SN* 13 29 53.37 +47 10 28.2   14.5       SNIIP 408 1
14 SN 2011dh SN* 13 30 05.10555 +47 10 10.9227           SNIIb 391 1
15 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4351 2
16 SN 2017eaw SN* 20 34 44.238 +60 11 36.00           SNIIP 116 0
17 SN 2002hh SN* 20 34 44.29 +60 07 19.0     17.18     SNIIP 152 1
18 SN 2004et SN* 20 35 25.33 +60 07 17.7   12.88       SNIIP 489 1

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