INTEGRAL high energy observations of 2S 0114+65

被引：27

作者：

Bonning, EWB ^{[1
]}

Falanga, M

机构：

[1] Observ Paris, LUTh, F-92195 Meudon, France

[2] CEA Saclay, DSM, DAPNIA, Serv Astrophys,CNRS,FRE 2591, F-91191 Gif Sur Yvette, France

来源：

ASTRONOMY & ASTROPHYSICS | 2005年 / 436卷 / 02期

关键词：

pulsars : individual : 2S 0114+65; stars : neutron; X-rays : stars;

D O I：

10.1051/0004-6361:200500117

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the first INTEGRAL timing and spectral analysis of the high mass X-ray binary source 2S 0114+65 at high energies (5-100 keV). The pulse period was found at 2.668 h with a high pulsed fraction, similar to 80% in both the 20-40 keV and 40-80 keV energy bands. The spin-up trend over similar to 8 years was measured to be. P = -8.9 x 10(-7) s s(-1). The hard X-ray spectrum. obtained with JEM-X/ISGRI is well described by a high energy exponential cut-off power law model where the estimated luminosity is 1.8 x 10 10(36) erg s s(-1) in the 5-100 keV energy band, for a source distance of 7.2 kpc. We tentatively identify a cyclotron resonance scattering feature at similar to 22 keV with one harmonic, implying a magnetic field of similar to 2.5 x 10(12) G.

引用

页码：L31 / L34

页数：4

共 18 条

[1]

Arnaud KA, 1996, ASTR SOC P, V101, P17

[2] THE OPTICAL COUNTERPARTS OF COMPACT GALACTIC-X-RAY SOURCES [J].

BRADT, HVD ;

MCCLINTOCK, JE .

ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 1983, 21 :13-66

[3] Magnetic fields of accreting X-ray pulsars with the Rossi X-ray Timing Explorer [J].

Coburn, W ;

Heindl, WA ;

Rothschild, RE ;

Gruber, DE ;

Kreykenbohm, I ;

Wilms, J ;

Kretschmar, P ;

Staubert, R .

ASTROPHYSICAL JOURNAL, 2002, 580 (01) :394-412

[4] Evidence for a very slow X-ray pulsar in 2S 0114+650 from Rossi X-Ray Timing Explorer all-sky monitor observations [J].

Corbet, RHD ;

Finley, JP ;

Peele, AG .

ASTROPHYSICAL JOURNAL, 1999, 511 (02) :876-884

[5] The INTEGRAL science data centre (ISDC) [J].

Courvoisier, TJL ;

Walter, R ;

Beckmann, V ;

Dean, AJ ;

Dubath, P ;

Hudec, R ;

Kretschmar, P ;

Mereghetti, S ;

Montmerle, T ;

Mowlavi, N ;

Paltani, S ;

Martinez, AP ;

Produit, N ;

Staubert, R ;

Strong, AW ;

Swings, JP ;

Westergaard, NJ ;

White, N ;

Winkler, C ;

Zdziarski, AA .

ASTRONOMY & ASTROPHYSICS, 2003, 411 (01) :L53-L57

[6] THE SUPERGIANT X-RAY BINARY-SYSTEM 2S-0114+650 [J].

CRAMPTON, D ;

HUTCHINGS, JB ;

COWLEY, AP .

ASTROPHYSICAL JOURNAL, 1985, 299 (02) :839-844

[7]

FARRELL SA, 2005, UNPUB MNRAS

[8]

FINLEY JP, 1992, ASTRON ASTROPHYS, V262, pL25

[9] The INTEGRAL IBIS/ISGRI System Point Spread Function and source location accuracy [J].

Gros, A ;

Goldwurm, A ;

Cadolle-Bel, M ;

Goldoni, P ;

Rodriguez, J ;

Foschini, L ;

Del Santo, M ;

Blay, P .

ASTRONOMY & ASTROPHYSICS, 2003, 411 (01) :L179-L183

[10] RXTE observations of the X-ray binary 2S 0114+650 [J].

Hall, TA ;

Finley, JP ;

Corbet, RHD ;

Thomas, RC .

ASTROPHYSICAL JOURNAL, 2000, 536 (01) :450-454

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