Precise source location of the anomalous 1979 March 5 gamma-ray transient

Cline, T. L.; Desai, U. D.; Teegarden, B. J.; Evans, W. D.; Klebesadel, R. W.; Laros, J. G.; Barat, C.; Hurley, Kevin; Niel, M.; Védrenne, G.

doi:10.1086/183766

Cited by 134 publications

(80 citation statements)

References 12 publications

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“…The position of SGR 0525Ϫ66 is consistent with that of the N49 supernova remnant in the Large Magellanic Cloud (Cline et al 1982). SGR 1806Ϫ20 (Atteia et al 1987) is associated with the SNR G10.0Ϫ0.3 that is located toward the Galactic center (Kulkarni & Frail 1993;Kouveliotou et al 1994;Kulkarni et al 1994;Murakami et al 1994).…”

Section: Introductionsupporting

confidence: 58%

[ITAL]ASCA[/ITAL] Discovery of an X-Ray Pulsar in the Error Box of SGR 1900+14

Hurley¹,

Li²,

Kouveliotou³

et al. 1999

The Astrophysical Journal

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171

107

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We present a 2-10 keV ASCA observation of the field around the soft gamma repeater SGR 1900ϩ14. One quiescent X-ray source was detected in this observation, and it was in the SGR error box. In 2-10 keV X-rays, its spectrum may be fitted by a power law with index Ϫ2.2, and its unabsorbed flux is ergs cm Ϫ2 Ϫ12 9.6 # 10 s Ϫ1 . We also find a clear 5.16 s period. The properties of the three well-studied soft gamma repeaters are remarkably similar to one another, and they provide evidence that all of them are associated with young, strongly magnetized neutron stars in supernova remnants.

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Section: Introductionsupporting

confidence: 58%

[ITAL]ASCA[/ITAL] Discovery of an X-Ray Pulsar in the Error Box of SGR 1900+14

Hurley¹,

Li²,

Kouveliotou³

et al. 1999

The Astrophysical Journal

Self Cite

171

107

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“…It lies ∼15Љ from the center of the nonthermal core and well outside it. The 3 j error ellipse has an area of ∼230 arcsec 2 , making it the smallest burst error box determined to date (the 324 arcsec 2 error box of the 1979 March 5 burst was, until now, "the most precisely determined gamma-ray source error box in existence" [Cline et al 1982]). The position of the nonthermal core has a total of 101.…”

Section: Observationsmentioning

confidence: 99%

Where is SGR 1806−20?

Hurley

Kouveliotou

Cline

et al. 1999

The Astrophysical Journal

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We apply a statistical method to derive very precise locations for soft gamma repeaters using data from the interplanetary network. We demonstrate the validity of the method by deriving a 600 arcsec 2 error ellipse for SGR 1900ϩ14 whose center agrees well with the VLA source position. We then apply it to SGR 1806Ϫ20, for which we obtain a 230 arcsec 2 error ellipse, the smallest burst error box to date. We find that the most likely position of the source has a small but significant displacement from that of the nonthermal core of the radio supernova remnant G10.0-0.3, which was previously thought to be the position of the repeater. We propose a different model to explain the changing supernova remnant morphology and the positions of the luminous blue variable and the bursting source.

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“…The precise localization of the latter source placed it in the Large Magellanic Cloud supernova remnant N49, hinting at a neutron star origin (Cline et al 1982). More recent observations of the SGR burst locations with X-ray imaging satellites led to the identification of their persistent counterparts in the 0.5-10 keV X-ray range.…”

Section: Introductionmentioning

confidence: 98%

INTEGRAL discovery of persistent hard X-ray emission from the Soft Gamma-ray Repeater SGR 1806–20

Mereghetti¹,

Götz²,

Mirabel

et al. 2005

A&A

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Abstract.We report the discovery of persistent hard X-ray emission extending up to 150 keV from the soft gamma-ray repeater SGR 1806-20 using data obtained with the INTEGRAL satellite in [2003][2004]. Previous observations of hard X-rays from objects of this class were limited to short duration bursts and rare transient episodes of strongly enhanced luminosity ("flares"). The emission observed with the IBIS instrument above 20 keV has a power law spectrum with photon index in the range 1.5-1.9 and a flux of 3 milliCrabs, corresponding to a 20-100 keV luminosity of ∼10 36 erg s −1 (for a distance of 15 kpc). The spectral hardness and the luminosity correlate with the level of source activity as measured from the number of emitted bursts.

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Precise source location of the anomalous 1979 March 5 gamma-ray transient

Cited by 134 publications

References 12 publications

[ITAL]ASCA[/ITAL] Discovery of an X-Ray Pulsar in the Error Box of SGR 1900+14

[ITAL]ASCA[/ITAL] Discovery of an X-Ray Pulsar in the Error Box of SGR 1900+14

Where is SGR 1806−20?

INTEGRAL discovery of persistent hard X-ray emission from the Soft Gamma-ray Repeater SGR 1806–20

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