{ "id": "1603.09109", "version": "v1", "published": "2016-03-30T10:17:17.000Z", "updated": "2016-03-30T10:17:17.000Z", "title": "The Multi-wavelength Characteristics of the TeV Binary LS I +61$^\\circ$ 303", "authors": [ "L. Saha", "V. R. Chitnis", "A. Shukla", "A. R. Rao", "B. S. Acharya" ], "comment": "10 pages, 7 figures, accepted for publication in ApJ", "categories": [ "astro-ph.HE" ], "abstract": "We study the characteristics of the TeV binary LS I +61$^\\circ$ 303 in radio, soft X-ray, hard X-ray, and gamma-ray (GeV and TeV) energies. The long term variability characteristics are examined as a function of the phase of the binary period of 26.496 days as well as the phase of the super orbital period of 1626 days, dividing the observations into a matrix of 10$\\times$10 phases of these two periods. It is found that the long term variability can be described by a sine function of the super orbital period, with the phase and amplitude systematically varying with the binary period phase. We also find a definite wavelength dependent change in this variability description. To understand the radiation mechanism, we define three states in the orbital/ super orbital phase matrix and examine the wide band spectral energy distribution. The derived source parameters indicate that the emission geometry is dominated by a jet structure showing a systematic variation with the orbital/ super orbital period. We suggest that LS I +61$^\\circ$ 303 is likely to be a micro-quasar with a steady jet.", "revisions": [ { "version": "v1", "updated": "2016-03-30T10:17:17.000Z" } ], "analyses": { "keywords": [ "tev binary ls", "super orbital period", "multi-wavelength characteristics", "long term variability", "wide band spectral energy distribution" ], "note": { "typesetting": "TeX", "pages": 10, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2016arXiv160309109S", "inspire": 1436473 } } }