A possible magnetar nature for IGR J16358-4726

S. K. Patel; J. Zurita; M. Del Santo; M. Finger; C. Kouveuotou; D. Eichler; E. Göǧüş; P. Ubertini; R. Walter; P. Woods; C. A. Wilson; S. Wachter; A. Bazzano

doi:10.1086/510374

A possible magnetar nature for IGR J16358-4726

S. K. Patel, J. Zurita, M. Del Santo, M. Finger, C. Kouveuotou, D. Eichler, E. Göǧüş, P. Ubertini, R. Walter, P. Woods, C. A. Wilson, S. Wachter, A. Bazzano

Department of Physics

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

27 Scopus citations

Abstract

We present detailed spectral and timing analysis of the hard X-ray transient IGR J16358-4726 using multisatellite archival observations. A study of the source flux time history over 6 yr suggests that lower luminosity transient outbursts can be occurring in intervals of at most 1 yr. Joint spectral fits of the higher luminosity outburst using simultaneous Chandra ACIS and INTEGRAL ISGRI data reveal a spectrum well described by an absorbed power-law model with a high-energy cutoff plus an Fe line. We detected the 1.6 hr pulsations initially reported using Chandra ACTS also in the INTEGRAL ISGRI light curve and in subsequent XMM-Newton observations. Using the INTEGRAL data, we identified a spin-up of 94 s (P = l.6 × 10^-4), which strongly points to a neutron star nature for IGR J16358- 4726. Assuming that the spin-up is due to disk accretion, we estimate that the source magnetic field ranges between 10¹³ and 10¹⁵ G, depending on its distance, possibly supporting a magnetar nature for IGR J16358-4726.

Original language	English
Pages (from-to)	994-1003
Number of pages	10
Journal	Astrophysical Journal
Volume	657
Issue number	2 I
DOIs	https://doi.org/10.1086/510374
State	Published - 10 Mar 2007

Keywords

Pulsars: individual (IGR J16358-4726)

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1086/510374

Cite this

@article{4c3633ed24454b0ca4a24e710158fad1,

title = "A possible magnetar nature for IGR J16358-4726",

abstract = "We present detailed spectral and timing analysis of the hard X-ray transient IGR J16358-4726 using multisatellite archival observations. A study of the source flux time history over 6 yr suggests that lower luminosity transient outbursts can be occurring in intervals of at most 1 yr. Joint spectral fits of the higher luminosity outburst using simultaneous Chandra ACIS and INTEGRAL ISGRI data reveal a spectrum well described by an absorbed power-law model with a high-energy cutoff plus an Fe line. We detected the 1.6 hr pulsations initially reported using Chandra ACTS also in the INTEGRAL ISGRI light curve and in subsequent XMM-Newton observations. Using the INTEGRAL data, we identified a spin-up of 94 s (P = l.6 × 10-4), which strongly points to a neutron star nature for IGR J16358- 4726. Assuming that the spin-up is due to disk accretion, we estimate that the source magnetic field ranges between 1013 and 1015 G, depending on its distance, possibly supporting a magnetar nature for IGR J16358-4726.",

keywords = "Pulsars: individual (IGR J16358-4726)",

author = "Patel, {S. K.} and J. Zurita and {Del Santo}, M. and M. Finger and C. Kouveuotou and D. Eichler and E. G{\"o}ǧ{\"u}{\c s} and P. Ubertini and R. Walter and P. Woods and Wilson, {C. A.} and S. Wachter and A. Bazzano",

year = "2007",

month = mar,

day = "10",

doi = "10.1086/510374",

language = "English",

volume = "657",

pages = "994--1003",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2 I",

}

TY - JOUR

T1 - A possible magnetar nature for IGR J16358-4726

AU - Patel, S. K.

AU - Zurita, J.

AU - Del Santo, M.

AU - Finger, M.

AU - Kouveuotou, C.

AU - Eichler, D.

AU - Göǧüş, E.

AU - Ubertini, P.

AU - Walter, R.

AU - Woods, P.

AU - Wilson, C. A.

AU - Wachter, S.

AU - Bazzano, A.

PY - 2007/3/10

Y1 - 2007/3/10

N2 - We present detailed spectral and timing analysis of the hard X-ray transient IGR J16358-4726 using multisatellite archival observations. A study of the source flux time history over 6 yr suggests that lower luminosity transient outbursts can be occurring in intervals of at most 1 yr. Joint spectral fits of the higher luminosity outburst using simultaneous Chandra ACIS and INTEGRAL ISGRI data reveal a spectrum well described by an absorbed power-law model with a high-energy cutoff plus an Fe line. We detected the 1.6 hr pulsations initially reported using Chandra ACTS also in the INTEGRAL ISGRI light curve and in subsequent XMM-Newton observations. Using the INTEGRAL data, we identified a spin-up of 94 s (P = l.6 × 10-4), which strongly points to a neutron star nature for IGR J16358- 4726. Assuming that the spin-up is due to disk accretion, we estimate that the source magnetic field ranges between 1013 and 1015 G, depending on its distance, possibly supporting a magnetar nature for IGR J16358-4726.

AB - We present detailed spectral and timing analysis of the hard X-ray transient IGR J16358-4726 using multisatellite archival observations. A study of the source flux time history over 6 yr suggests that lower luminosity transient outbursts can be occurring in intervals of at most 1 yr. Joint spectral fits of the higher luminosity outburst using simultaneous Chandra ACIS and INTEGRAL ISGRI data reveal a spectrum well described by an absorbed power-law model with a high-energy cutoff plus an Fe line. We detected the 1.6 hr pulsations initially reported using Chandra ACTS also in the INTEGRAL ISGRI light curve and in subsequent XMM-Newton observations. Using the INTEGRAL data, we identified a spin-up of 94 s (P = l.6 × 10-4), which strongly points to a neutron star nature for IGR J16358- 4726. Assuming that the spin-up is due to disk accretion, we estimate that the source magnetic field ranges between 1013 and 1015 G, depending on its distance, possibly supporting a magnetar nature for IGR J16358-4726.

KW - Pulsars: individual (IGR J16358-4726)

UR - http://www.scopus.com/inward/record.url?scp=33947637598&partnerID=8YFLogxK

U2 - 10.1086/510374

DO - 10.1086/510374

M3 - Article

AN - SCOPUS:33947637598

SN - 0004-637X

VL - 657

SP - 994

EP - 1003

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 I

ER -

A possible magnetar nature for IGR J16358-4726

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this