Estimating the jet power from Broadband SED modelling of Mkn 501 for different particle distributions
Abstract
We consider the broad-band spectral energy distribution of the high-energy-peaked blazar Mkn 501 using Swift-XRT/UVOT, NuSTAR and Fermi-LAT observations taken between 2013 and 2022. The spectra were fitted with a one-zone leptonic model using synchrotron and synchrotron self-Compton emission from different particle energy distributions such as a broken power law, log-parabola, as well as distributions expected when the diffusion or the acceleration time-scale are energy-dependent. The jet power estimated for a broken power-law distribution was ~1047(1044) erg s-1 for a minimum electron energy γmin ~ 10(103). However, for electron energy distributions with intrinsic curvature (such as the log-parabola form), the jet power is significantly lower at a few times 1042 erg s-1 which is a few per cent of the Eddington luminosity of a 107 M⊙ black hole, suggesting that the jet may be powered by accretion processes. We discuss the implications of these results.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- April 2024
- DOI:
- 10.1093/mnras/stae706
- arXiv:
- arXiv:2403.06111
- Bibcode:
- 2024MNRAS.529.4433B
- Keywords:
-
- acceleration of particles;
- diffusion;
- radiation mechanisms: non-thermal;
- galaxies: active;
- BL Lacertae objects: individual: Mkn 501;
- gamma-rays: galaxies;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- Accepted for publication in MNRAS