X-ray observations of the compact source in CTA 1

Patrick Slane, Erik R. Zimmerman, John Hughes, Frederick D. Seward, Bryan M. Gaensler, Melanie J. Clarke

Research output: Contribution to journalArticle

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Abstract

We have studied the point source RX J0007.0+7302, at the center of supernova remnant CTA 1, using the X-Ray Multi-mirror Mission (XMM-Newton). The X-ray spectrum of the source is consistent with that of a neutron star and is well described by a power law with the addition of a soft thermal component that may correspond to emission from hot polar cap regions or to cooling emission from a light-element atmosphere over the entire star. There is evidence of extended emission on small spatial scales, which may correspond to structure in the underlying synchrotron nebula. No pulsations are observed. Extrapolation of the nonthermal spectrum of RX J0007.0+7302 to gamma-ray energies yields a flux consistent with that of EGRET source 3EG J0010+7309, supporting the proposition that there is a gamma-ray-emitting pulsar at the center of CTA 1. Observations of the outer regions of CTA 1 with ASCA confirm earlier detections of thermal emission from the supernova remnant and show that the synchrotron nebula extends to the outermost reaches of the remnant.

Original languageEnglish (US)
Pages (from-to)1045-1049
Number of pages5
JournalAstrophysical Journal
Volume601
Issue number2 I
DOIs
StatePublished - Feb 1 2004

Fingerprint

supernova remnants
XMM-Newton telescope
nebulae
synchrotrons
gamma rays
x rays
polar caps
light elements
thermal emission
pulsars
newton
point sources
neutron stars
extrapolation
point source
cooling
atmospheres
stars
power law
atmosphere

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Nuclear and High Energy Physics

Cite this

Slane, P., Zimmerman, E. R., Hughes, J., Seward, F. D., Gaensler, B. M., & Clarke, M. J. (2004). X-ray observations of the compact source in CTA 1. Astrophysical Journal, 601(2 I), 1045-1049. https://doi.org/10.1086/380498
Slane, Patrick ; Zimmerman, Erik R. ; Hughes, John ; Seward, Frederick D. ; Gaensler, Bryan M. ; Clarke, Melanie J. / X-ray observations of the compact source in CTA 1. In: Astrophysical Journal. 2004 ; Vol. 601, No. 2 I. pp. 1045-1049.
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Slane, P, Zimmerman, ER, Hughes, J, Seward, FD, Gaensler, BM & Clarke, MJ 2004, 'X-ray observations of the compact source in CTA 1', Astrophysical Journal, vol. 601, no. 2 I, pp. 1045-1049. https://doi.org/10.1086/380498

X-ray observations of the compact source in CTA 1. / Slane, Patrick; Zimmerman, Erik R.; Hughes, John; Seward, Frederick D.; Gaensler, Bryan M.; Clarke, Melanie J.

In: Astrophysical Journal, Vol. 601, No. 2 I, 01.02.2004, p. 1045-1049.

Research output: Contribution to journalArticle

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Slane P, Zimmerman ER, Hughes J, Seward FD, Gaensler BM, Clarke MJ. X-ray observations of the compact source in CTA 1. Astrophysical Journal. 2004 Feb 1;601(2 I):1045-1049. https://doi.org/10.1086/380498