Spectral evolution of an ultraluminous compact X-ray source in NGC 253

Takaaki Tanaka, Masahiko Sugiho, Aya Kubota, Kazuo Makishima, Tadayuki Takahashi

Research output: Contribution to journalArticle

Abstract

We report an observational result for a ULX in NGC253. We find that the spectral evolution is well consistent with the standard behavior. That is, the source satisfies the relation Ldisk ∝ Tin 4 as established for black hole binaries. By comparing with black hole binaries, we estimate black hole mass of this ULX as 7M⊙.

Original languageEnglish
Pages (from-to)427-428
Number of pages2
JournalProgress of Theoretical Physics Supplement
Volume155
Publication statusPublished - 2004
Externally publishedYes

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x rays
tin
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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Spectral evolution of an ultraluminous compact X-ray source in NGC 253. / Tanaka, Takaaki; Sugiho, Masahiko; Kubota, Aya; Makishima, Kazuo; Takahashi, Tadayuki.

In: Progress of Theoretical Physics Supplement, Vol. 155, 2004, p. 427-428.

Research output: Contribution to journalArticle

Tanaka, T, Sugiho, M, Kubota, A, Makishima, K & Takahashi, T 2004, 'Spectral evolution of an ultraluminous compact X-ray source in NGC 253', Progress of Theoretical Physics Supplement, vol. 155, pp. 427-428.
Tanaka, Takaaki ; Sugiho, Masahiko ; Kubota, Aya ; Makishima, Kazuo ; Takahashi, Tadayuki. / Spectral evolution of an ultraluminous compact X-ray source in NGC 253. In: Progress of Theoretical Physics Supplement. 2004 ; Vol. 155. pp. 427-428.
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