Leptonic secondary emission in a hadronic microquasar model
Context.It has been proposed that the origin of the very high-energy photons emitted from high-mass X-ray binaries with jet-like features, so-called microquasars (MQs), is related to hadronic interactions between relativistic protons in the jet and cold protons of the stellar wind. Leptonic secondar...
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| Autores principales: | , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2007
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/82957 |
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I19-R120-10915-82957 |
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dspace |
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Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
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SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas Gamma rays: theory Radiation mechanisms: non-thermal Stars: binaries |
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Ciencias Astronómicas Gamma rays: theory Radiation mechanisms: non-thermal Stars: binaries Orellana, Mariana Dominga Bordas, P. Bosch-Ramon, V. Romero, Gisela Andrea Paredes, J. M. Leptonic secondary emission in a hadronic microquasar model |
| topic_facet |
Ciencias Astronómicas Gamma rays: theory Radiation mechanisms: non-thermal Stars: binaries |
| description |
Context.It has been proposed that the origin of the very high-energy photons emitted from high-mass X-ray binaries with jet-like features, so-called microquasars (MQs), is related to hadronic interactions between relativistic protons in the jet and cold protons of the stellar wind. Leptonic secondary emission should be calculated in a complete hadronic model that includes the effects of pairs from charged pion decays inside the jets and the emission from pairs generated by gamma-ray absorption in the photosphere of the system.Aims.We aim at predicting the broadband spectrum from a general hadronic microquasar model, taking into account the emission from secondaries created by charged pion decay inside the jet.Methods.The particle energy distribution for secondary leptons injected along the jets is consistently derived taking the energy losses into account. The spectral energy distribution resulting from these leptons is calculated after assuming different values of the magnetic field inside the jets. We also compute the spectrum of the gamma-rays produced by neutral pion-decay and processed by electromagnetic cascades under the stellar photon field. Results.We show that the secondary emission can dominate the spectral energy distribution at low energies (~1 MeV). At high energies, the production spectrum can be significantly distorted by the effect of electromagnetic cascades. These effects are phase-dependent, and some variability modulated by the orbital period is predicted. |
| format |
Articulo Articulo |
| author |
Orellana, Mariana Dominga Bordas, P. Bosch-Ramon, V. Romero, Gisela Andrea Paredes, J. M. |
| author_facet |
Orellana, Mariana Dominga Bordas, P. Bosch-Ramon, V. Romero, Gisela Andrea Paredes, J. M. |
| author_sort |
Orellana, Mariana Dominga |
| title |
Leptonic secondary emission in a hadronic microquasar model |
| title_short |
Leptonic secondary emission in a hadronic microquasar model |
| title_full |
Leptonic secondary emission in a hadronic microquasar model |
| title_fullStr |
Leptonic secondary emission in a hadronic microquasar model |
| title_full_unstemmed |
Leptonic secondary emission in a hadronic microquasar model |
| title_sort |
leptonic secondary emission in a hadronic microquasar model |
| publishDate |
2007 |
| url |
http://sedici.unlp.edu.ar/handle/10915/82957 |
| work_keys_str_mv |
AT orellanamarianadominga leptonicsecondaryemissioninahadronicmicroquasarmodel AT bordasp leptonicsecondaryemissioninahadronicmicroquasarmodel AT boschramonv leptonicsecondaryemissioninahadronicmicroquasarmodel AT romerogiselaandrea leptonicsecondaryemissioninahadronicmicroquasarmodel AT paredesjm leptonicsecondaryemissioninahadronicmicroquasarmodel |
| bdutipo_str |
Repositorios |
| _version_ |
1764820488100511746 |