A Preliminary Analysis of a New Chandra Observation (ObsID 6148) of Cir X-1

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Abstract

We present the preliminary spectral analysis of a 25 ks long Chandra observation of the peculiar source Cir X-1 near the periastron passage. We estimate more precise coordinates of the source compatible with the optical and radio counterpart coordinates. We detect emission lines associated to Mg XII, Si XIII, Si XIV, S XV, S XVI Ar XVII, Ar XVIII, Ca XIX, Ca XX, Fe XXV, Fe XXVI showing a redshift of 470 km s-1. The more intense emission features at 6.6 keV show a double-peaked shape that can be modelled with two or three Gaussian lines.
Lingua originaleEnglish
Titolo della pubblicazione ospiteInternational Conference on Astrophysics of Compact Objects
Pagine248-250
Numero di pagine3
Stato di pubblicazionePublished - 2008

Serie di pubblicazioni

NomeAIP CONFERENCE PROCEEDINGS

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • Physics and Astronomy(all)
  • Nature and Landscape Conservation

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