SUZAKU OBSERVATION OF THE CLASSICAL NOVA V2491 Cyg IN QUIESCENCE

被引：16

作者：

Zemko, P. ^{[1
]}

Mukai, K. ^{[2
,3
,4
]}

Orio, M. ^{[5
,6
]}

机构：

[1] Univ Padua, Dept Phys & Astron, Vicolo Osservatorio 3, I-35122 Padua, Italy

[2] NASA, CRESST, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[3] NASA Goddard Space Flight Ctr, Xray Astrophys Lab, Greenbelt, MD 20771 USA

[4] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA

[5] INAF Osservatorio Padova, I-35122 Padua, Italy

[6] Univ Wisconsin, Dept Astron, Madison, WI 53704 USA

来源：

ASTROPHYSICAL JOURNAL | 2015年 / 807卷 / 01期

关键词：

novae; cataclysmic variables; X-rays: binaries; X-rays: individual (V2491 Cyg); X-RAY OBSERVATIONS; INTERMEDIATE POLARS; RECURRENT NOVAE; WHITE-DWARFS; SPECTRAL-ANALYSIS; LIGHT-CURVE; POST-NOVA; EMISSION; LINE; MATTER;

D O I：

10.1088/0004-637X/807/1/61

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the Suzaku XIS observation of V2491 Cyg (Nova Cyg 2008 No. 2) obtained in quiescence, more than two years after the outburst. The nova was detected as a very luminous source in a wide spectral range from soft to hard X-rays. A very soft blackbody-like component peaking at 0.5 keV indicates that we observe either remaining, localized hydrogen burning on the surface of the white dwarf, or accretion onto a magnetized polar cap. In the second case, V2491 Cyg is a candidate "soft intermediate polar." We obtained the best fit for the X-ray spectra with several components: two of thermal plasma, a blackbody and a complex absorber. The latter is typical of intermediate polars. The X-ray light curve shows a modulation with a period of similar to 38 minutes. The amplitude of this modulation is strongly energy-dependent and reaches a maximum in the range 0.8-2.0 keV. We discuss the origin of the X-ray emission and pulsations, and the likelihood of the intermediate polar scenario.

引用

页数：8

共 50 条

[21] X-ray development of the classical nova V2672 Ophiuchi with Suzaku
Takei, Dai
Tsujimoto, Masahiro
Drake, Jeremy J.
Kitamoto, Shunji
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2014, 66 (02)
[22] X-ray spectroscopy of the classical nova V458 Vulpeculae with Suzaku
Tsujimoto, Masahiro
Takei, Dai
Drake, Jeremy J.
Ness, Jan-Uwe
Kitamoto, Shunji
Publications of the Astronomical Society of Japan, 2009, 61 (SUPPL. 1)
[23] X-Ray Spectroscopy of the Classical Nova V458 Vulpeculae with Suzaku
Tsujimoto, Masahiro
Takei, Dai
Drake, Jeremy J.
Ness, Jan-Uwe
Kitamoto, Shunji
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2009, 61 : S69 - S76
[24] Doppler imaging of V404 Cyg in quiescence
Casares, J
CATACLYSMIC VARIABLES AND RELATED OBJECTS, 1996, 208 : 395 - 398
[25] V404 Cyg: 10 years in quiescence
Elena P. Pavlenko
Yuliana G. Kuznetsova
Sergei Yu. Shugarov
Vladislav S. Petrov
Astrophysics and Space Science, 2001, 276 : 65 - 66
[26] V404CYG: 10 years in quiescence
Pavlenko, EP
Kuznetsova, YG
Shugarov, SY
Petrov, VS
ASTROPHYSICS AND SPACE SCIENCE, 2001, 276 (Suppl 1) : 65 - 66
[27] Doppler imaging of V404 Cyg in quiescence
Casares, J.
Astrophysics and Space Science Library, 1996, (208):
[28] A Multi-epoch, Multiwavelength Study of the Classical FUor V1515 Cyg Approaching Quiescence
Szabo, Zs M.
Kospal, A.
Abraham, P.
Park, S.
Siwak, M.
Green, J. D.
Pal, A.
Acosta-Pulido, J. A.
Lee, J-E
Ibrahimov, M.
Grankin, K.
Kovacs, B.
Bora, Zs
Bodi, A.
Cseh, B.
Csornyei, G.
Drozdz, Marek
Hanyecz, O.
Ignacz, B.
Kalup, Cs
Konyves-Toth, R.
Krezinger, M.
Kriskovics, L.
Ogloza, Waldemar
Ordasi, A.
Sarneczky, K.
Seli, B.
Szakats, R.
Sodor, A.
Szing, A.
Vida, K.
Vinko, J.
ASTROPHYSICAL JOURNAL, 2022, 936 (01):
[29] The X-ray spectrum of the dwarf nova SS Cyg in quiescence and outburst
Done, C
Osborne, JP
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1997, 288 (03) : 649 - 664
[30] Study of the Classical Novae V2467 Cyg and V2468 Cyg
Shugarov, S.
Chochol, D.
Volkov, I.
Pribulla, T.
BINARIES - KEY TO COMPREHENSION OF THE UNIVERSE, 2010, 435 : 315 - +

← 1 2 3 4 5 →