Serpens X-1 observed by INTEGRAL

N. Masetti; L. Foschini; E. Palazzi; V. Beckmann; Niels Lund; Søren Kristian Brandt; Niels Jørgen Stenfeldt Westergaard; L. Amati; E. Caroli; S. Del Sordo; G. Di Cocco; P. Durouchoux; R. Farinelli; F. Frontera; M. Orlandini; A. Zdziarski

Serpens X-1 observed by INTEGRAL

N. Masetti, L. Foschini, E. Palazzi, V. Beckmann, Niels Lund, Søren Kristian Brandt, Niels Jørgen Stenfeldt Westergaard, L. Amati, E. Caroli, S. Del Sordo, G. Di Cocco, P. Durouchoux, R. Farinelli, F. Frontera, M. Orlandini, A. Zdziarski

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

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.

Original language	English
Journal	Astronomy and Astrophysics
Volume	423
Issue number	2
Pages (from-to)	651-656
ISSN	0004-6361
Publication status	Published - 2004

Keywords

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

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@article{da23d6f0fcab4949b3f0176ba2940f96,

title = "Serpens X-1 observed by INTEGRAL",

abstract = "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.",

keywords = "X-rays : individuals : Ser X-1, X-rays : binaries, stars : neutron",

author = "N. Masetti and L. Foschini and E. Palazzi and V. Beckmann and Niels Lund and Brandt, {S{\o}ren Kristian} and Westergaard, {Niels J{\o}rgen Stenfeldt} and L. Amati and E. Caroli and {Del Sordo}, S. and {Di Cocco}, G. and P. Durouchoux and R. Farinelli and F. Frontera and M. Orlandini and A. Zdziarski",

year = "2004",

language = "English",

volume = "423",

pages = "651--656",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

number = "2",

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TY - JOUR

T1 - Serpens X-1 observed by INTEGRAL

AU - Masetti, N.

AU - Foschini, L.

AU - Palazzi, E.

AU - Beckmann, V.

AU - Lund, Niels

AU - Brandt, Søren Kristian

AU - Westergaard, Niels Jørgen Stenfeldt

AU - Amati, L.

AU - Caroli, E.

AU - Del Sordo, S.

AU - Di Cocco, G.

AU - Durouchoux, P.

AU - Farinelli, R.

AU - Frontera, F.

AU - Orlandini, M.

AU - Zdziarski, A.

PY - 2004

Y1 - 2004

N2 - 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.

AB - 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.

KW - X-rays : individuals : Ser X-1

KW - X-rays : binaries

KW - stars : neutron

M3 - Journal article

SN - 0004-6361

VL - 423

SP - 651

EP - 656

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 2

ER -

Serpens X-1 observed by INTEGRAL

Abstract

Keywords

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