出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要:LS I +61303 is a high mass X-ray binary, where a compact object travels on an eccentric orbit around a Be star with an orbital period of 26.5 d. The most peculiar radio characteristics of LS I +61303 are two periodicities. A large periodic radio outburst exhibits the same period as the orbit (F). A second periodicity of 4.6 yr (Q) modulates the orbital phase and amplitude of the large outburst. Recent analysis of the radio spectral index and high energy observations can be explained by a two-peak accretion/ejection microquasar model. Nonetheless, the emission processes leading to the high and very high energy emission are still under debate. Summing up the high energy observations done so far on LS I +61303 and putting them in comparison with the radio spectral index could yield new insights into the emission processes creating the high energy emission.