The X-ray and radio emission from SN 2002ap:: The importance of Compton scattering

被引：61

作者：

Björnsson, CI ^{[1
]}

Fransson, C ^{[1
]}

机构：

[1] AlbaNova Univ Ctr, Dept Astron, SE-10691 Stockholm, Sweden

来源：

ASTROPHYSICAL JOURNAL | 2004年 / 605卷 / 02期

关键词：

gamma rays : bursts; radiation mechanisms : nonthermal; radio continuum : general; supernovae : general; supernovae : individual (SN 2002ap);

D O I：

10.1086/382584

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The radio and X-ray observations of the Type Ic supernova SN 2002ap are modeled. We find that inverse Compton cooling by photospheric photons explains the observed steep radio spectrum, and also the X-ray flux observed by XMM-Newton. Thermal emission from the shock is insufficient to explain the X-ray flux. The radio-emitting region expands with a velocity of similar to70,000 km s(-1). From the ratio of X-ray to radio emission, we find that the energy densities of magnetic fields and relativistic electrons are close to equipartition. The mass-loss rate of the progenitor star depends on the absolute value of epsilon(B), and is given by (M) over dot approximate to 1 x 10(-8) (v(w)/1000 km s(-1))epsilon(B)(-1) M-. yr(-1).

引用

页码：823 / 829

页数：7

共 25 条

[1] The radio evolution of the ordinary Type Ic supernova SN 2002ap [J].

Berger, E ;

Kulkarni, SR ;

Chevalier, RA .

ASTROPHYSICAL JOURNAL, 2002, 577 (01) :L5-L8

[2]

Chevalier RA, 2003, LECT NOTES PHYS, V598, P171

[3] SELF-SIMILAR SOLUTIONS FOR THE INTERACTION OF STELLAR EJECTA WITH AN EXTERNAL MEDIUM [J].

CHEVALIER, RA .

ASTROPHYSICAL JOURNAL, 1982, 258 (02) :790-797

[4] Optical photometry and spectroscopy of the SN 1998bw-like Type Ic supernova 2002ap [J].

Foley, RJ ;

Papenkova, MS ;

Swift, BJ ;

Filippenko, AV ;

Li, WD ;

Mazzali, PA ;

Chornock, R ;

Leonard, DC ;

Van Dyk, SD .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2003, 115 (812) :1220-1235

[5] Radio emission and particle acceleration in SN 1993J [J].

Fransson, C ;

Björnsson, CI .

ASTROPHYSICAL JOURNAL, 1998, 509 (02) :861-878

[6]

FRANSSON C, 1982, ASTRON ASTROPHYS, V111, P140

[7] A very energetic supernova associated with the γ-ray burst of 29 March 2003 [J].

Hjorth, J ;

Sollerman, J ;

Moller, P ;

Fynbo, JPU ;

Woosley, SE ;

Kouveliotou, C ;

Tanvir, NR ;

Greiner, J ;

Andersen, MI ;

Castro-Tirado, AJ ;

Cerón, JMC ;

Fruchter, AS ;

Gorosabel, J ;

Jakobsson, P ;

Kaper, L ;

Klose, S ;

Masetti, N ;

Pedersen, H ;

Pedersen, K ;

Pian, E ;

Palazzi, E ;

Rhoads, JE ;

Rol, E ;

van den Heuvel, EPJ ;

Vreeswijk, PM ;

Watson, D ;

Wijers, RAMJ .

NATURE, 2003, 423 (6942) :847-850

[8]

Iwamoto K, 2003, LECT NOTES PHYS, V598, P243

[9] The peculiar type Ic supernova 1997ef: Another hypernova [J].

Iwamoto, K ;

Nakamura, T ;

Nomoto, K ;

Mazzali, PA ;

Danziger, IJ ;

Garnavich, P ;

Kirshner, R ;

Jha, S ;

Balam, D ;

Thorstensen, J .

ASTROPHYSICAL JOURNAL, 2000, 534 (02) :660-669

[10] On the spectrum and spectropolarimetry of type Ic hypernova SN 2003dh/GRB 030329 [J].

Kawabata, KS ;

Deng, J ;

Wang, L ;

Mazzali, P ;

Nomoto, K ;

Maeda, K ;

Tominaga, N ;

Umeda, H ;

Iye, M ;

Kosugi, G ;

Ohyama, Y ;

Sasaki, T ;

Höflich, P ;

Wheeler, JC ;

Jeffery, DJ ;

Aoki, K ;

Kashikawa, N ;

Takata, T ;

Kawai, N ;

Sakamoto, T ;

Urata, Y ;

Yoshida, A ;

Tamagawa, T ;

Torii, K ;

Aoki, W ;

Kobayashi, N ;

Komiyama, Y ;

Mizumoto, Y ;

Noumaru, J ;

Ogasawara, R ;

Sekiguchi, K ;

Shirasaki, Y ;

Totani, T ;

Watanabe, J ;

Yamada, T .

ASTROPHYSICAL JOURNAL, 2003, 593 (01) :L19-L22

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