XMM-NEWTON OBSERVATIONS OF IGR J00291+5934: SIGNS OF A THERMAL SPECTRAL COMPONENT DURING QUIESCENCE

被引：11

作者：

Campana, Sergio ^{[1
]}

Stella, Luigi ^{[2
]}

Israel, Gianluca ^{[2
]}

D'Avanzo, Paolo ^{[1
]}

机构：

[1] INAF Osservatorio Astron Brera, I-23807 Merate, Lc, Italy

[2] Osserv Astron Roma, INAF, I-00040 Monte Porzio Catone, Rome, Italy

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2008年 / 689卷 / 02期

关键词：

accretion; accretion disks; stars: individual (IGR J00291+5934); stars: neutron;

D O I：

10.1086/595867

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present X-ray observations of the transient accretion-powered millisecond pulsar IGR J00291 + 5934 during quiescence. IGR J00291 + 5934 is the first source among accretion-powered millisecond pulsars to show signs of a thermal component in its quiescent spectrum. Fitting this component with a neutron star atmosphere or a blackbody model we obtain soft temperatures (similar to 64 and similar to 110 eV, respectively). As in other sources of this class a hard spectral component is also present, comprising more than 60% of the unabsorbed 0.5-10 keV flux. Interpreting the soft component as cooling emission from the neutron star, we can conclude that the compact object can be spun up to millisecond periods by accreting only less than or similar to 0.2. M-circle dot.

引用

页码：L129 / L132

页数：4

共 25 条

[1] The optical counterpart of IGR J00291+5934 in quiescence
D'Avanzo, P.
Campana, S.
Covino, S.
Israel, G. L.
Stella, L.
Andreuzzi, G.
ASTRONOMY & ASTROPHYSICS, 2007, 472 (03) : 881 - 885
[2] Optical and X-ray observations of IGR J00291+5934 in quiescence
Jonker, P. G.
Torres, M. A. P.
Steeghs, D.
ASTROPHYSICAL JOURNAL, 2008, 680 (01) : 615 - 619
[3] Chandra observations of the millisecond X-ray pulsar IGR J00291+5934 in quiescence
Jonker, PG
Campana, S
Steeghs, D
Torres, MAP
Galloway, DK
Markwardt, CB
Chakrabarty, D
Swank, J
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2005, 361 (02) : 511 - 516
[4] Spectral and timing properties of IGR J00291+5934 during its 2015 outburst
Sanna, A.
Pintore, F.
Bozzo, E.
Ferrigno, C.
Papitto, A.
Riggio, A.
Di Salvo, T.
Iaria, R.
D'Ai, A.
Egron, E.
Burderi, L.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 466 (03) : 2910 - 2917
[5] INTEGRAL and RXTE observations of accreting millisecond pulsar IGR J00291+5934 in outburst
Falanga, M
Kuiper, L
Poutanen, J
Bonning, EW
Hermsen, W
Di Salvo, T
Goldoni, P
Goldwurm, A
Shaw, SE
Stella, L
ASTRONOMY & ASTROPHYSICS, 2005, 444 (01) : 15 - 24
[6] Observations of the 599 Hz accreting X-ray pulsar IGR J00291+5934 during the 2004 outburst and in quiescence
Torres, M. A. P.
Jonker, P. G.
Steeghs, D.
Roelofs, G. H. A.
Bloom, J. S.
Casares, J.
Falco, E. E.
Garcia, M. R.
Marsh, T. R.
Mendez, M.
Miller, J. M.
Nelemans, G.
Rodriguez-Gil, P.
ASTROPHYSICAL JOURNAL, 2008, 672 (02) : 1079 - 1090
[7] The puzzling case of the accreting millisecond X-ray pulsar IGR J00291+5934: flaring optical emission during quiescence
Baglio, M. C.
Campana, S.
D'Avanzo, P.
Papitto, A.
Burderi, L.
Di Salvo, T.
Munoz-Darias, T.
Rea, N.
Torres, D. F.
ASTRONOMY & ASTROPHYSICS, 2017, 600
[8] The 2015 outburst of the accretion-powered pulsar IGR J00291+5934: INTEGRAL and Swift observations
De Falco, V.
Kuiper, L.
Bozzo, E.
Galloway, D. K.
Poutanen, J.
Ferrigno, C.
Stella, L.
Falanga, M.
ASTRONOMY & ASTROPHYSICS, 2017, 599
[9] Swift/XRT, Chandra, and XMM-Newton observations of IGR J17091-3624 as it returns into quiescence
Pereyra, M.
Altamirano, D.
Court, J. M. C.
Degenaar, N.
Wijnands, R.
Parikh, A. S.
Cuneo, V. A.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 497 (01) : 1115 - 1126
[10] Observations of GRO J1744-28 in quiescence with XMM-Newton
Doroshenko, V
Suleimanov, V
Tsygankov, S.
Monkkonen, J.
Ji, L.
Santangelo, A.
ASTRONOMY & ASTROPHYSICS, 2020, 643

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