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

Research output: Chapter in Book/Report/Conference proceedingChapter


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.
Original languageEnglish
Title of host publicationInternational Conference on Astrophysics of Compact Objects
Number of pages3
Publication statusPublished - 2008

Publication series


All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • General Physics and Astronomy
  • Nature and Landscape Conservation


Dive into the research topics of 'A Preliminary Analysis of a New Chandra Observation (ObsID 6148) of Cir X-1'. Together they form a unique fingerprint.

Cite this