Suzaku observations of two ultraluminous X-ray sources in the nearby spiral galaxy IC 342

Tessei Yoshida, Naoki Isobe, Shin Mineshige, Aya Kubota, Tsunefumi Mizuno, Kazuo Makishima

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report a result of our Suzaku observations for two ultraluminous X-ray sources (ULX; X-1 and X-2) in IC 342 on 2010 August and 2011 March. We found a hint of hard X-ray photons (14-20 keV), and fitted the XIS and the PIN spectra simultaneously. As a result, the joint spectra can be explained by the power-law model for X-1 and the multi-color disk model for X-2. We briefly discuss the spectral states of the two ULXs comparing with those of Galactic black hole binaries.

Original languageEnglish
Title of host publicationSUZAKU 2011 - Exploring the X-Ray Universe
Subtitle of host publicationSuzaku and Beyond
Pages318-319
Number of pages2
DOIs
Publication statusPublished - 2012 May 10
EventSuzaku 2011: Exploring the X-Ray Universe: Suzaku and Beyond - Palo Alto, CA, United States
Duration: 2011 Jul 202011 Jul 22

Publication series

NameAIP Conference Proceedings
Volume1427
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceSuzaku 2011: Exploring the X-Ray Universe: Suzaku and Beyond
CountryUnited States
CityPalo Alto, CA
Period11/7/2011/7/22

Keywords

  • X-rays: binaries
  • accretion, accretion disks
  • black hole physics
  • galaxies: individual (IC 342)

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Yoshida, T., Isobe, N., Mineshige, S., Kubota, A., Mizuno, T., & Makishima, K. (2012). Suzaku observations of two ultraluminous X-ray sources in the nearby spiral galaxy IC 342. In SUZAKU 2011 - Exploring the X-Ray Universe: Suzaku and Beyond (pp. 318-319). (AIP Conference Proceedings; Vol. 1427). https://doi.org/10.1063/1.3696222