A BROAD-BAND X-RAY TELESCOPE SPECTRUM OF THE MASSIVE X-RAY BINARY X-PERSEI

被引：22

作者：

SCHLEGEL, EM

SERLEMITSOS, PJ

JAHODA, K

MARSHALL, F

PETRE, R

BOLDT, E

MUSHOTZKY, R

SWANK, J

SZYMKOWIAK, A

SMALE, A

WEAVER, K

机构：

[1] Code 668, NASA, Goddard Space Flight Center, Greenbelt

[2] Code 666, NASA, Goddard Space Flight Center, Greenbelt

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 407卷 / 02期

关键词：

STARS; EMISSION-LINE; BE; INDIVIDUAL; (X-PERSEI); NEUTRON; X-RAYS;

D O I：

10.1086/172556

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Broad Band X-Ray Telescope, covering the 0.3-12 keV bandpass with moderate spectral resolution, observed the Be/X-ray binary X Per in 1990 December during the Astro-1 mission on the space shuttle Columbia. The data obtained are the best to date to search for lines and edges. The data are well fitted by a power-law spectrum with a high-energy cutoff. A low value for the high-energy cutoff is found, implying a slightly weaker magnetic field strength for the X-ray pulsar. No iron line is present at approximately 6.5 keV with an equivalent width > 30-40 eV. The BBXRT observation corresponded to the ''off'' state of X Per's recent ''phase change.''

引用

页码：744 / 751

页数：8

共 30 条

[1] X-RAY-SPECTRA OF X-PERSEI [J].

BECKER, RH ;

BOLDT, EA ;

HOLT, SS ;

PRAVDO, SH ;

ROBINSONSABA, J ;

SERLEMITSOS, PJ ;

SWANK, JH .

ASTROPHYSICAL JOURNAL, 1979, 227 (01) :L21-L24

[2] X PERSEI AN X-RAY SOURCE [J].

BRAES, LLE ;

MILEY, GK .

NATURE, 1972, 235 (5336) :273-&

[3] OPTICAL CANDIDATES FOR 2 X-RAY SOURCES [J].

BRUCATO, RJ ;

KRISTIAN, J .

ASTROPHYSICAL JOURNAL, 1972, 173 (03) :L105-&

[4] LONG-TERM AND PERIODIC VARIABILITY OF 4U 1258-61 (GX304-1) [J].

CORBET, RHD ;

SMALE, AP ;

MENZIES, JW ;

BRANDUARDIRAYMONT, G ;

CHARLES, PA ;

MASON, KO ;

BOOTH, L .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1986, 221 (04) :961-973

[5]

FABREGAT J, 1992, ASTRON ASTROPHYS, V259, P522

[6] EMPIRICAL RELATION BETWEEN INTERSTELLAR X-RAY ABSORPTION AND OPTICAL EXTINCTION [J].

GORENSTEIN, P .

ASTROPHYSICAL JOURNAL, 1975, 198 (01) :95-101

[7]

Hutchings J. B., 1974, Astrophysical Journal. Letters to the Editor, V191, pL101, DOI 10.1086/181560

[8]

JERNIGAN JG, 1976, IAU2900 CIRC

[9]

KOYAMA K, 1989, PUBL ASTRON SOC JPN, V41, P461

[10] DISCOVERY OF A PROMINENT CYCLOTRON ABSORPTION FEATURE FROM THE TRANSIENT-X-RAY PULSAR X0331+53 [J].

MAKISHIMA, K ;

MIHARA, T ;

ISHIDA, M ;

OHASHI, T ;

SAKAO, T ;

TASHIRO, M ;

TSURU, T ;

KII, T ;

MAKINO, F ;

MURAKAMI, T ;

NAGASE, F ;

TANAKA, Y ;

KUNIEDA, H ;

TAWARA, Y ;

KITAMOTO, S ;

MIYAMOTO, S ;

YOSHIDA, A ;

TURNER, MJL .

ASTROPHYSICAL JOURNAL, 1990, 365 (02) :L59-L62

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