PS1-10jh – a tidal disruption event with an extremely low disc temperature
| Autor: | Matias Montesinos Armijo, J. A. de Freitas Pacheco |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics Accretion (meteorology) Astrophysics::High Energy Astrophysical Phenomena Phase (waves) FOS: Physical sciences Reynolds number Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Light curve Luminosity Black hole Tidal disruption event symbols.namesake Viscosity Space and Planetary Science symbols Astrophysics::Earth and Planetary Astrophysics Astrophysics - High Energy Astrophysical Phenomena Astrophysics::Galaxy Astrophysics |
| Zdroj: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Artículos CONICYT CONICYT Chile instacron:CONICYT |
| ISSN: | 1745-3933 1745-3925 |
| DOI: | 10.1093/mnrasl/sls047 |
| Popis: | The cooler than expected optical-UV transient PS1-10jh detected by the Pan-STARRS1 survey is probably related to a tidal disruption event in which a He-rich stellar core remnant is implied. The evolution of bound debris during the disk phase is studied by solving the hydrodynamic equations. The model provides a good fit either of the raising part of the light curve in the bands g_(P1), r_(P1), and i_(P1) or in the early decay. The parameters characterizing this optimized model are the mass of the central black hole, i.e., 6.3x10^6 Msun and the critical Reynolds number Re = 10^4 that fixes the viscosity and the accretion timescale. Such a high value of Re explains the low disk temperature and the consequent absence of X-ray emission. The predicted bolometric peak luminosity is about 10^45 erg/s and the predicted total radiated energy is about Erad=2.67x10^(51) erg. 5 pages, 6 figures. Accepted for publication in MNRAS letters |
| Databáze: | OpenAIRE |
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