Pre-nova X-ray observations of V2491 Cygni (Nova Cyg 2008b)

被引：21

作者：

Ibarra, A. ^{[1
]}

Kuulkers, E. ^{[1
]}

Osborne, J. P. ^{[2
]}

Page, K. ^{[2
]}

Ness, J. U. ^{[1
]}

Saxton, R. D. ^{[1
]}

Baumgartner, W. ^{[3
]}

Beckmann, V. ^{[4
,5
]}

Bode, M. F. ^{[6
]}

Hernanz, M. ^{[7
]}

Mukai, K. ^{[8
,9
]}

Orio, M. ^{[10
,11
]}

Sala, G. ^{[12
]}

Starrfield, S. ^{[13
]}

Wynn, G. A. ^{[2
]}

机构：

[1] ESAC, ESA, Madrid 28691, Spain

[2] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

[3] Univ Maryland Baltimore Cty, Baltimore, MD 21250 USA

[4] ISDC Data Ctr Astrophys, CH-1290 Versoix, Switzerland

[5] Univ Geneva, Astron Observ, CH-1290 Sauverny, Switzerland

[6] Liverpool John Moores Univ, Astroph Res Inst, Birkenhead CH41 1LD7, Merseyside, England

[7] CSIC, IEEC, Fac Ciencies, Bellaterra 08193, Spain

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

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

[10] Osserv Astron Padova, INAF, I-35122 Padua, Italy

[11] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA

[12] Univ Politecn Cataluna, Dept Fis & Engn Nucl, Grp Astron & Astrofis, Barcelona 08036, Spain

[13] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2009年 / 497卷 / 01期

关键词：

X-rays: binaries; novae; cataclysmic variables; AM-HERCULIS; EMISSION; INTEGRAL/IBIS; BAT;

D O I：

10.1051/0004-6361/200911710

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Classical novae are phenomena caused by explosive hydrogen burning onto an accreting white dwarf. Only one classical nova had been identified in X-rays before the actual optical outburst occurred (V2487 Oph). The recently discovered nova, V2491 Cyg, is one of the fastest (He/N) novae observed to date. Using archival ROSAT, XMM-Newton, and Swift data, we show that V2491 Cyg was a persistent X-ray source during its quiescent time before the optical outburst. We present the X-ray spectral characteristics and derive X-ray fluxes. The pre-outburst X-ray emission is variable, and, at least in one observation, it exhibits a soft X-ray source.

引用

页码：L5 / L8

页数：4

共 50 条

[1] Pre-nova X-ray observations of V2491 Cygni (Nova Cyg 2008b)
Ibarra, A.
Kuulkers, E.
Osborne, J.P.
Page, K.
Ness, J.U.
Saxton, R.D.
Baumgartner, W.
Beckmann, V.
Bode, M.F.
Hernanz, M.
Mukai, K.
Orio, M.
Sala, G.
Starrfield, S.
Wynn, G.A.
Astronomy and Astrophysics, 2009, 497 (01):
[2] Swift observations of the X-ray and UV evolution of V2491 Cyg (Nova Cyg 2008 No. 2)
Page, K. L.
Osborne, J. P.
Evans, P. A.
Wynn, G. A.
Beardmore, A. P.
Starling, R. L. C.
Bode, M. F.
Ibarra, A.
Kuulkers, E.
Ness, J. -U.
Schwarz, G. J.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 401 (01) : 121 - 130
[3] A phenomenological model for the X-ray spectrum of nova V2491 Cygni
Pinto, C.
Ness, J. -U.
Verbunt, F.
Kaastra, J. S.
Costantini, E.
Detmers, R. G.
ASTRONOMY & ASTROPHYSICS, 2012, 543
[4] X-Ray Study of Rekindled Accretion in the Classical Nova V2491 Cygni
Takei, Dai
Ness, Jan-Uwe
Tsujimoto, Masahiro
Kitamoto, Shunji
Drake, Jeremy J.
Osborne, Julian P.
Takahashi, Hiromitsu
Kinugasa, Kenzo
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2011, 63 : S729 - S738
[5] V2491 Cyg - A Possible Recurrent Nova?
Ragan, E.
Mikolajewski, M.
Tomov, T.
Swierczynski, E.
Brozek, T.
Galan, C.
Rozanski, P.
Wiecek, M.
Wychudzki, P.
BINARIES - KEY TO COMPREHENSION OF THE UNIVERSE, 2010, 435 : 335 - 336
[6] SUZAKU DETECTION OF SUPERHARD X-RAY EMISSION FROM THE CLASSICAL NOVA V2491 CYGNI
Takei, D.
Tsujimoto, M.
Kitamoto, S.
Ness, J. -U.
Drake, J. J.
Takahashi, H.
Mukai, K.
ASTROPHYSICAL JOURNAL LETTERS, 2009, 697 (01): : L54 - L57
[7] XMM-NEWTON X-RAY AND ULTRAVIOLET OBSERVATIONS OF THE FAST NOVA V2491 Cyg DURING THE SUPERSOFT SOURCE PHASE
Ness, J. -U.
Osborne, J. P.
Dobrotka, A.
Page, K. L.
Drake, J. J.
Pinto, C.
Detmers, R. G.
Schwarz, G.
Bode, M. F.
Beardmore, A. P.
Starrfield, S.
Hernanz, M.
Sala, G.
Krautter, J.
Woodward, C. E.
ASTROPHYSICAL JOURNAL, 2011, 733 (01):
[8] SUZAKU OBSERVATION OF THE CLASSICAL NOVA V2491 Cyg IN QUIESCENCE
Zemko, P.
Mukai, K.
Orio, M.
ASTROPHYSICAL JOURNAL, 2015, 807 (01):
[9] On the progenitor system of Nova V2491 Cygni (Research Note)
Darnley, M. J.
Ribeiro, V. A. R. M.
Bode, M. F.
Munari, U.
ASTRONOMY & ASTROPHYSICS, 2011, 530
[10] Beginning of the super-soft phase of the classical nova V2491 Cygni
Takei, D.
Ness, J. -U.
ASTRONOMISCHE NACHRICHTEN, 2010, 331 (02) : 183 - 186

← 1 2 3 4 5 →