Unraveling the Cooling Trend of the Soft Gamma Repeater SGR 1627-41

Kouveliotou, C.; Eichler, David; Woods, P. M.; Lyubarsky, Yuri; Patel, S.; Göǧüş, E.; Klis, M. van der; Tennant, Allyn F.; Wachter, Stefanie; Hurley, K.

doi:10.1086/379187

Cited by 70 publications

(117 citation statements)

References 7 publications

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“…The absorption was consistent with that measured in all the previous observations, N H =9×10 22 cm −2 . There is evidence that the spectrum softened between the two Chandra observations carried out in September 2001 and August 2002 (Kouveliotou et al 2003). The photon index measured with XMM-Newton is consistent with that of the last Chandra observation but, due to the large uncertainties, also a further softening cannot be excluded.…”

Section: Xmm-newton Resultssupporting

confidence: 63%

See 1 more Smart Citation

XMM–Newton observations of soft gamma-ray repeaters

Mereghetti¹,

Esposito²,

Tiengo³

2007

Isolated Neutron Stars: From the Surface to the Interior

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Section: Xmm-newton Resultssupporting

confidence: 63%

“…The decay light curve was fitted with a model of deep crustal heating requiring a massive neutron star (M>1.5 M ⊙ ) which could well explain a plateau seen between days 400 and 800 (Kouveliotou et al 2003). However, the evidence for such a plateau is not so compelling, according to our reanalysis of the BeppoSAX data.…”

Section: Xmm-newton Resultsmentioning

confidence: 89%

XMM–Newton observations of soft gamma-ray repeaters

Mereghetti¹,

Esposito²,

Tiengo³

2007

Isolated Neutron Stars: From the Surface to the Interior

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“…The peak luminosity of SGR 1627−41 was 9.5 × 10 34 d 2 11 erg s −1 during the outburst, and the distance was measured as 11.0 ± 0.3 kpc (Corbel et al 1999). The source subsequently decayed to quiescence with L X ∼ 3.9 × 10 33 d 2 11 erg s −1 (Kouveliotou et al 2003). In 2008 May, a new X-ray outburst was observed in SGR 1627−41 (Palmer et al 2008).…”

Section: Application Of the Model To The X-ray Enhancement Light Curvmentioning

confidence: 97%

On the X-Ray Outbursts of Transient Anomalous X-Ray Pulsars and Soft Gamma-Ray Repeaters

Çalışkan¹,

Ertan²

2012

ApJ

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We show that the X-ray outburst light curves of four transient anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs), namely, XTE J1810−197, SGR 0501+4516, SGR 1627−41, and CXOU J164710.2−455216, can be produced by the fallback disk model that was also applied to the outburst light curves of persistent AXPs and SGRs in our earlier work. The model solves the diffusion equation for the relaxation of a disk that has been pushed back by a soft gamma-ray burst. The sets of main disk parameters used for these transient sources are very similar to each other and to those employed in our earlier models of persistent AXPs and SGRs. There is a characteristic difference between the X-ray outburst light curves of transient and persistent sources. This can be explained by the differences in the disk surface density profiles of the transient and persistent sources in quiescence indicated by their quiescent X-ray luminosities. Our results imply that a viscous disk instability operating at a critical temperature in the range of ∼1300-2800 K is a common property of all fallback disks around AXPs and SGRs. The effect of the instability is more pronounced and starts earlier for the sources with lower quiescent luminosities, which leads to the observable differences in the X-ray enhancement light curves of transient and persistent sources. A single active disk model with the same basic disk parameters can account for the enhancement phases of both transient and persistent AXPs and SGRs. We also present a detailed parameter study to show the effects of disk parameters on the evolution of the X-ray luminosity of AXPs and SGRs in the X-ray enhancement phases.

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“…In fact, the persistent X-ray emission in some sources shows such large excursions that they become detectable only during outbursts (Ibrahim et al 2004). Long-term monitoring observations of these transient sources as well as during post-burst cooling of persistent sources has led to better understanding of crust cooling and energy injection mechanisms (e.g., Kouveliotou et al 2003;Güver et al 2007;Rea et al 2009). …”

Section: Anomalous X-ray Pulsars and Soft Gamma Ray Repeatersmentioning

confidence: 99%

Surface emission from neutron stars and implications for the physics of their interiors

Özel

2012

Rep. Prog. Phys.

124

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Abstract. Neutron stars are associated with diverse physical phenomena that take place in conditions characterized by ultrahigh densities as well as intense gravitational, magnetic, and radiation fields. Understanding the properties and interactions of matter in these regimes remains one of the challenges in compact object astrophysics. Photons emitted from the surfaces of neutron stars provide direct probes of their structure, composition, and magnetic fields. In this review, I discuss in detail the physics that governs the properties of emission from the surfaces of neutron stars and their various observational manifestations. I present the constraints on neutron star radii, core and crust composition, and magnetic field strength and topology obtained from studies of their broadband spectra, evolution of thermal luminosity, and the profiles of pulsations that originate on their surfaces.

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Unraveling the Cooling Trend of the Soft Gamma Repeater SGR 1627-41

Cited by 70 publications

References 7 publications

XMM–Newton observations of soft gamma-ray repeaters

XMM–Newton observations of soft gamma-ray repeaters

On the X-Ray Outbursts of Transient Anomalous X-Ray Pulsars and Soft Gamma-Ray Repeaters

Surface emission from neutron stars and implications for the physics of their interiors

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