Discovery of pulsed X-rays from the SMC transient RX J0052.1-7319

M. H. Finger; D. J. Macomb; R. C. Lamb; T. A. Prince; M. J. Coe; N. J. Haigh

doi:10.1086/322484

Discovery of pulsed X-rays from the SMC transient RX J0052.1-7319

M. H. Finger, D. J. Macomb, R. C. Lamb, T. A. Prince, M. J. Coe, N. J. Haigh

Physics Department

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Abstract

Coherent 65 mHz pulsations in the X-ray flux of the Small Magellanic Cloud (SMC) transient source RX J0052.1-7319 have been detected by us in an analysis of ROSAT data. We report on the pulsations we detected in ROSAT HRI data and simultaneous detection of these pulses in hard X-rays using BATSE data. The BATSE data show an outburst of the source lasting 60 days. We report on optical observations of the candidate companion, and a new source position we determined from the HRI data, which is consistent with the candidate's location. From the measured fluxes and observed frequency derivatives we exclude the possibility that the pulsar is in the foreground of the SMC and show that an accretion disk is present during the outburst, which peaked near Eddington luminosity.

Original language	English
Pages (from-to)	378-383
Number of pages	6
Journal	Astrophysical Journal
Volume	560
Issue number	1 PART 1
DOIs	https://doi.org/10.1086/322484
State	Published - 10 Oct 2001

Keywords

Accretion, accretion disks
Binaries: general
Pulsars: individual (RX J0052.1-7319)
X-rays: stars

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10.1086/322484

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title = "Discovery of pulsed X-rays from the SMC transient RX J0052.1-7319",

abstract = "Coherent 65 mHz pulsations in the X-ray flux of the Small Magellanic Cloud (SMC) transient source RX J0052.1-7319 have been detected by us in an analysis of ROSAT data. We report on the pulsations we detected in ROSAT HRI data and simultaneous detection of these pulses in hard X-rays using BATSE data. The BATSE data show an outburst of the source lasting 60 days. We report on optical observations of the candidate companion, and a new source position we determined from the HRI data, which is consistent with the candidate's location. From the measured fluxes and observed frequency derivatives we exclude the possibility that the pulsar is in the foreground of the SMC and show that an accretion disk is present during the outburst, which peaked near Eddington luminosity.",

keywords = "Accretion, accretion disks, Binaries: general, Pulsars: individual (RX J0052.1-7319), X-rays: stars",

author = "Finger, {M. H.} and Macomb, {D. J.} and Lamb, {R. C.} and Prince, {T. A.} and Coe, {M. J.} and Haigh, {N. J.}",

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doi = "10.1086/322484",

language = "English",

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pages = "378--383",

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TY - JOUR

T1 - Discovery of pulsed X-rays from the SMC transient RX J0052.1-7319

AU - Finger, M. H.

AU - Macomb, D. J.

AU - Lamb, R. C.

AU - Prince, T. A.

AU - Coe, M. J.

AU - Haigh, N. J.

PY - 2001/10/10

Y1 - 2001/10/10

N2 - Coherent 65 mHz pulsations in the X-ray flux of the Small Magellanic Cloud (SMC) transient source RX J0052.1-7319 have been detected by us in an analysis of ROSAT data. We report on the pulsations we detected in ROSAT HRI data and simultaneous detection of these pulses in hard X-rays using BATSE data. The BATSE data show an outburst of the source lasting 60 days. We report on optical observations of the candidate companion, and a new source position we determined from the HRI data, which is consistent with the candidate's location. From the measured fluxes and observed frequency derivatives we exclude the possibility that the pulsar is in the foreground of the SMC and show that an accretion disk is present during the outburst, which peaked near Eddington luminosity.

AB - Coherent 65 mHz pulsations in the X-ray flux of the Small Magellanic Cloud (SMC) transient source RX J0052.1-7319 have been detected by us in an analysis of ROSAT data. We report on the pulsations we detected in ROSAT HRI data and simultaneous detection of these pulses in hard X-rays using BATSE data. The BATSE data show an outburst of the source lasting 60 days. We report on optical observations of the candidate companion, and a new source position we determined from the HRI data, which is consistent with the candidate's location. From the measured fluxes and observed frequency derivatives we exclude the possibility that the pulsar is in the foreground of the SMC and show that an accretion disk is present during the outburst, which peaked near Eddington luminosity.

KW - Accretion, accretion disks

KW - Binaries: general

KW - Pulsars: individual (RX J0052.1-7319)

KW - X-rays: stars

UR - http://www.scopus.com/inward/record.url?scp=0035841110&partnerID=8YFLogxK

U2 - 10.1086/322484

DO - 10.1086/322484

M3 - Article

AN - SCOPUS:0035841110

SN - 0004-637X

VL - 560

SP - 378

EP - 383

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 PART 1

ER -

Discovery of pulsed X-rays from the SMC transient RX J0052.1-7319

Abstract

Keywords

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