OPTICAL PHOTOMETRIC MONITORING OF LS I +61 303
نویسندگان
چکیده
منابع مشابه
Orbital Parameters of the Microquasar LS I + 61 303
New optical spectroscopy of the HMXB microquasar LS I +61 303 is presented. Eccentric orbital fits to our radial velocity measurements yield updated orbital parameters in good agreement with previous work. Our orbital solution indicates that the periastron passage occurs at radio phase 0.23 and the X-ray/radio outbursts are triggered 2.5–4 days after the compact star passage. The spectrum of th...
متن کاملSwift / XRT monitoring of five orbital cycles of LS I + 61 ◦ 303
Context. LS I+61 303 is one of the most interesting high-mass X-ray binaries owing to its spatially resolved radio emission and its TeV emission, generally attributed to non-thermal particles in an accretion-powered relativistic jet or in the termination shock of the relativistic wind of a young pulsar. Also, the nature of the compact object is still debated. Only LS 5039 and PSR B1259−63 (whic...
متن کاملHigh-energy Γ-ray Emission from Microquasars: Ls 5039 and Ls I +61 303
The possible associations between the microquasars LS 5039 and LS I +61 303 and the EGRET sources 3EG J1824−1514 and 3EG J0241+6103 suggest that microquasars could also be sources of high-energy γ-rays. In this work, we present a detailed numerical inverse Compton (IC) model, based on a microquasar scenario, that reproduces the high-energy γ-ray spectra and variability observed by EGRET for the...
متن کاملA Time-dependent Leptonic Model for Microquasar Jets: Application to Ls I 61 303
The Galactic high-mass X-ray binary and jet source (microquasar) LS I 61 303 has recently been detected at TeV g-ray energies by the MAGIC telescope. We have applied a time-dependent leptonic jet model to the broadband spectral energy distribution (SED), and we have suggested (although not unambiguously detected) an orbital modulation of the very high energy (VHE) g-ray emission of this source....
متن کاملHadronic High-energy Gamma-ray Emission from the Microquasar Ls I +61 303
We present a hadronic model for gamma-ray production in the microquasar LS I +61 303. The system is formed by a neutron star that accretes matter from the dense and slow equatorial wind of the Be primary star. We calculate the gamma-ray emission originated in pp interactions between relativistic protons in the jet and cold protons from the wind. After taking into account opacity effects on the ...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics: Conference Series
سال: 2014
ISSN: 2010-1945,2010-1945
DOI: 10.1142/s2010194514601975