2006A&A...449..171N


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.12CEST18:04:13

2006A&A...449..171N - Astronomy and Astrophysics, volume 449, 171-192 (2006/4-1)

X-ray emission from radiative shocks in type II supernovae.

NYMARK T.K., FRANSSON C. and KOZMA C.

Abstract (from CDS):

The X-ray emission from the circumstellar interaction in type II supernovae with a dense circumstellar medium is calculated. In type IIL and type IIn supernovae, mass loss rates are generally high enough for the region behind the reverse shock to be radiative, producing strong radiation, particularly in X-rays. We present a model for the emission from the cooling region in the case of a radiative reverse shock. Under the assumption of a stationary flow, a hydrodynamic model is combined with a time-dependent ionization balance and multilevel calculations. The applicability of the steady state approximation is discussed for various values of the ejecta density gradient and different sets of chemical composition. We show how the emerging spectrum strongly depends on the reverse shock velocity and the composition of the shocked gas. We discuss differences between a spectrum produced by this model and a single-temperature spectrum. Large differences are found especially for the line emission, which can seriously affect abundance estimates. We also illustrate the effects of absorption in the cool shocked ejecta. The applicability of our model to various types of supernovae is discussed.

Abstract Copyright:

Journal keyword(s): stars: supernovae: general - stars: circumstellar matter - X-rays: supernovae - hydrodynamics - shock waves - atomic processes

Simbad objects: 14

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Number of rows : 14

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 SN 1986J SN* 02 22 31.33 +42 19 56.4   18.4 18.4     SNII 306 1
2 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1526 2
3 SN 1978K SN* 03 17 38.620 -66 33 03.40   13.0       SNII 187 1
4 SN 1999em SN* 04 41 27.04 -02 51 45.2   13.79 13.7     SNIIP 574 1
5 2MASS J07371703+6535579 HXB 07 37 17.0439241104 +65 35 57.815731387           SNIIP 234 1
6 SN 1993J SN* 09 55 24.77476 +69 01 13.7026   10.8 12.0     SNIIb 1256 1
7 M 81 Sy2 09 55 33.17306143 +69 03 55.0609270   7.89 6.94     ~ 3974 5
8 SN 1998S SN* 11 46 06.13 +47 28 55.4     12.2     SNIIn 377 1
9 NGC 3877 GiG 11 46 07.782 +47 29 40.20   11.8       ~ 276 0
10 SN 1979C SN* 12 22 58.58 +15 47 52.7   11.6       SNIIL 549 1
11 SN 1995N SN* 14 49 28.29 -10 10 14.0     17.5     SNIIn 132 1
12 SN 1980K SN* 20 35 30.07 +60 06 23.7   11.6       SNIIL 429 1
13 NAME Cyg Loop SNR 20 51.0 +30 40           ~ 824 0
14 NAME Cas A SNR 23 23 24.000 +58 48 54.00           ~ 2423 1

    Equat.    Gal    SGal    Ecl

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2020.08.12-18:04:13

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