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Radio QPO in the γ -ray-loud X-ray binary LS I +61°303.
- Source :
- Monthly Notices of the Royal Astronomical Society: Letters; Oct2017, Vol. 471 Issue 1, pL110-L114, 5p
- Publication Year :
- 2017
-
Abstract
- LS I +61°303 is a γ -ray emitting X-ray binary with periodic radio outbursts with time-scales of one month. Previous observations have revealed microflares superimposed on these large outbursts with periods ranging from a few minutes to hours. This makes LS I +61°303, along with Cyg X-1, the only TeV emitting X-ray binary exhibiting radio microflares. To further investigate this microflaring activity in LS I +61°303 we observed the source with the 100-m Effelsberg radio telescope at 4.85, 8.35 and 10.45 GHz, and performed a timing analysis on the obtained data. Radio oscillations of 15 h time-scales are detected at all three frequencies. We also compare the spectral index evolution of radio data to that of the photon index of GeV data observed by Fermi-Large Area Telescope. We conclude that the observed Quasi Periodic Oscillations could result from multiple shocks in a jet. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17453925
- Volume :
- 471
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Monthly Notices of the Royal Astronomical Society: Letters
- Publication Type :
- Academic Journal
- Accession number :
- 125760427
- Full Text :
- https://doi.org/10.1093/mnrasl/slx121