Discovery of the orbital period in the supergiant fast X-ray transient IGR J17544-2619

D. J. Clark; A. B. Hill; A. J. Bird; V. A. McBride; S. Scaringi; A. J. Dean

doi:10.1111/j.1745-3933.2009.00737.x

Discovery of the orbital period in the supergiant fast X-ray transient IGR J17544-2619

D. J. Clark, A. B. Hill, A. J. Bird, V. A. McBride, S. Scaringi, A. J. Dean

Physics

Research output: Contribution to journal › Letter › peer-review

36 Scopus citations

Abstract

The supergiant fast X-ray transient (SFXT) system IGR J17544-2619 has displayed many large outbursts in the past and is considered an archetypal example of SFXTs. A search of the INTEGRAL/ISGRI data archive from MJD 52698-54354 has revealed 11 outbursts and timing analysis of the light curve identifies a period of 4.926 ± 0.001 d which we interpret as the orbital period of the system. We find that large outbursts occasionally occur outside of periastron and place an upper limit for the radius of the supergiant of <23 R_⊙.

Original language	English
Pages (from-to)	L113-L117
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	399
Issue number	1
DOIs	https://doi.org/10.1111/j.1745-3933.2009.00737.x
State	Published - Oct 2009

Keywords

Gamma-rays: observations
X-rays: binaries
X-rays: individual: IGR J17544-2619

Access to Document

10.1111/j.1745-3933.2009.00737.x

Cite this

@article{eae5c20bc3c64fc7b00b6abd32f7a75c,

title = "Discovery of the orbital period in the supergiant fast X-ray transient IGR J17544-2619",

abstract = "The supergiant fast X-ray transient (SFXT) system IGR J17544-2619 has displayed many large outbursts in the past and is considered an archetypal example of SFXTs. A search of the INTEGRAL/ISGRI data archive from MJD 52698-54354 has revealed 11 outbursts and timing analysis of the light curve identifies a period of 4.926 ± 0.001 d which we interpret as the orbital period of the system. We find that large outbursts occasionally occur outside of periastron and place an upper limit for the radius of the supergiant of <23 R⊙.",

keywords = "Gamma-rays: observations, X-rays: binaries, X-rays: individual: IGR J17544-2619",

author = "Clark, {D. J.} and Hill, {A. B.} and Bird, {A. J.} and McBride, {V. A.} and S. Scaringi and Dean, {A. J.}",

year = "2009",

month = oct,

doi = "10.1111/j.1745-3933.2009.00737.x",

language = "English",

volume = "399",

pages = "L113--L117",

journal = "Monthly Notices of the Royal Astronomical Society: Letters",

issn = "1745-3933",

number = "1",

}

TY - JOUR

T1 - Discovery of the orbital period in the supergiant fast X-ray transient IGR J17544-2619

AU - Clark, D. J.

AU - Hill, A. B.

AU - Bird, A. J.

AU - McBride, V. A.

AU - Scaringi, S.

AU - Dean, A. J.

PY - 2009/10

Y1 - 2009/10

N2 - The supergiant fast X-ray transient (SFXT) system IGR J17544-2619 has displayed many large outbursts in the past and is considered an archetypal example of SFXTs. A search of the INTEGRAL/ISGRI data archive from MJD 52698-54354 has revealed 11 outbursts and timing analysis of the light curve identifies a period of 4.926 ± 0.001 d which we interpret as the orbital period of the system. We find that large outbursts occasionally occur outside of periastron and place an upper limit for the radius of the supergiant of <23 R⊙.

AB - The supergiant fast X-ray transient (SFXT) system IGR J17544-2619 has displayed many large outbursts in the past and is considered an archetypal example of SFXTs. A search of the INTEGRAL/ISGRI data archive from MJD 52698-54354 has revealed 11 outbursts and timing analysis of the light curve identifies a period of 4.926 ± 0.001 d which we interpret as the orbital period of the system. We find that large outbursts occasionally occur outside of periastron and place an upper limit for the radius of the supergiant of <23 R⊙.

KW - Gamma-rays: observations

KW - X-rays: binaries

KW - X-rays: individual: IGR J17544-2619

UR - http://www.scopus.com/inward/record.url?scp=77958552047&partnerID=8YFLogxK

U2 - 10.1111/j.1745-3933.2009.00737.x

DO - 10.1111/j.1745-3933.2009.00737.x

M3 - Letter

AN - SCOPUS:77958552047

SN - 1745-3933

VL - 399

SP - L113-L117

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

IS - 1

ER -

Discovery of the orbital period in the supergiant fast X-ray transient IGR J17544-2619

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this