Serpens X-1 observed by INTEGRAL

被引：6

作者：

Masetti, N

Foschini, L

Palazzi, E

Beckmann, V

Lund, N

Brandt, S

Westergaard, NJ

Amati, L

Caroli, E

Del Sordo, S

Di Cocco, G

Durouchoux, P

Farinelli, R

Frontera, F

Orlandini, M

Zdziarski, A

机构：

[1] CNR, Sez Bologna, Ist Astrofis Spaziale & Fis Cosm, I-40129 Bologna, Italy

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

[3] Univ Maryland Baltimore Cty, Dept Phys, Joint Ctr Astrophys, Baltimore, MD 21250 USA

[4] Danish Space Res Inst, DK-2100 Copenhagen O, Denmark

[5] CNR, Sez Palermo, Ist Astrofis Spaziale & Fis Cosm, I-90146 Palermo, Italy

[6] CEA Saclay, DSM, DAPNIA, Serv Astrophys, F-91191 Gif Sur Yvette, France

[7] Univ Ferrara, Dept Phys, I-44100 Ferrara, Italy

[8] Nicholas Copernicus Astron Ctr, PL-00716 Warsaw, Poland

来源：

ASTRONOMY & ASTROPHYSICS | 2004年 / 423卷 / 02期

关键词：

X-rays : binaries; X-rays : individuals : Ser X-1; stars : neutron;

D O I：

10.1051/0004-6361:20040210

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Here we report results of an INTEGRAL-AO1 observation of the X-ray burst and atoll source Ser X-1 performed in May 2003. The object was observed for a total on-source time of 400 ks but nearly 8degrees off-axis due to its amalgamation with an observation of SS 433, the pointing target source. Ser X-1 has been clearly detected up to 30 keV with unprecedented positional accuracy for high-energy emission. The 20-30 keV light curve showed substantial variability during the observation. Comparison with previous observations indicates that the source was in its high ("banana") state and displayed a soft spectrum during the INTEGRAL pointing. A (non simultaneous) radio-to-gamma-rays broad-band spectral energy distribution is also presented for the first time and discussed.

引用

页码：651 / 656

页数：6

共 42 条

[11] First results of IBIS/ISGRI cygnus X-3 monitoring during INTEGRAL PV phase [J].

Goldoni, P ;

Bonnet-Bidaud, JM ;

Falanga, M ;

Goldwurm, A .

ASTRONOMY & ASTROPHYSICS, 2003, 411 (01) :L399-L403

[12] The INTEGRAL/IBIS scientific data analysis [J].

Goldwurm, A ;

David, P ;

Foschini, L ;

Gros, A ;

Laurent, P ;

Sauvageon, A ;

Bird, AJ ;

Lerusse, L ;

Produit, N .

ASTRONOMY & ASTROPHYSICS, 2003, 411 (01) :L223-L229

[13]

GOLDWURM A, 2003, IBIS ISGRI INSTRUMEN

[14] 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

[15]

HASINGER G, 1989, ASTRON ASTROPHYS, V225, P79

[16] Spectroscopy of the optical counterpart to Ser X-1 [J].

Hynes, RI ;

Charles, PA ;

van Zyl, L ;

Barnes, A ;

Steeghs, D ;

O'Brien, K ;

Casares, J .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2004, 348 (01) :100-104

[17]

KUULKERS E, 2003, IN PRESS NUCL PH B S

[18] The Ibis-Picsit detector onboard integral [J].

Labanti, C ;

Di Cocco, G ;

Ferro, G ;

Gianotti, F ;

Mauri, A ;

Rossi, E ;

Stephen, JB ;

Traci, A ;

Trifoglio, M .

ASTRONOMY & ASTROPHYSICS, 2003, 411 (01) :L149-L152

[19] ISGRI:: The INTEGRAL Soft Gamma-Ray Imager [J].

Lebrun, F ;

Leray, JP ;

Lavocat, P ;

Crétolle, J ;

Arquès, M ;

Blondel, C ;

Bonnin, C ;

Bouère, A ;

Cara, C ;

Chaleil, T ;

Daly, F ;

Desages, F ;

Dzitko, H ;

Horeau, B ;

Laurent, P ;

Limousin, O ;

Mathy, F ;

Mauguen, V ;

Meignier, F ;

Moliniè, F ;

Poindron, E ;

Rouger, M ;

Sauvageon, A ;

Tourrette, T .

ASTRONOMY & ASTROPHYSICS, 2003, 411 (01) :L141-L148

[20]

LEVINE AM, 1996, APJ, V469, P33

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