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A leptonic/hadronic jet model for the low-mass microquasar XTE J1118+480

Published online by Cambridge University Press:  24 February 2011

Gabriela S. Vila  and
Gustavo E. Romero
Gabriela S. Vila
Affiliation:
Instituto Argentino de Radioastronomía, (CCT La Plata - CONICET), C.C. N°5 (1894), Villa Elisa, Buenos Aires, Argentina email: [email protected]
Gustavo E. Romero
Affiliation:
Instituto Argentino de Radioastronomía, (CCT La Plata - CONICET), C.C. N°5 (1894), Villa Elisa, Buenos Aires, Argentina email: [email protected] Facultad de Ciencias Astronómicas y Geofísicas (FCAG, UNLP), Paseo del Bosque s/n (1900), La Plata, Buenos Aires, Argentina email: [email protected]
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Abstract

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We present a one–zone jet model that fits the data from simultaneous broadband radio-to-X-rays observations of XTE J1118+480. We calculate the radiative contribution to the non-thermal spectrum of both relativistic electrons and protons, as well as that from secondary muons, charged pions and electron-positron pairs produced at high-energy hadronic interactions. The distributions in energy of all the particle species are obtained taking into account the energy losses, injection, decay and escape from the emission region. We also include absorption effects on the emission spectrum due to photon-photon annihilation. Finally, we discuss the detectability of XTE J1118+480 at high energies with the present instruments according to the predictions of our model for the gamma-ray band.

Keywords

Radiation mechanisms: nonthermalX-rays: individual (XTE J118+480)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S275: Jets at all Scales , September 2010 , pp. 315 - 316
Copyright
Copyright © International Astronomical Union 2011

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