X-ray Flux and Spectral Variability of the TeV Blazars Mrk 421 and PKS 2155-304
arXiv:2009.02263
Abstract
We reviewed X-ray flux and spectral variability properties studied to date by various X-ray satellites for Mrk 421 and PKS 2155-304, which are TeV emitting blazars. Mrk 421 and PKS 2155-304 are the most X-ray luminous blazars in the northern and southern hemispheres, respectively. Blazars show flux and spectral variabilities in the complete electromagnetic spectrum on diverse timescales ranging from a few minutes to hours, days, weeks, months and even several years. The flux and spectral variability on different timescales can be used to constrain the size of the emitting region, estimate the super massive black hole mass, find the dominant emission mechanism in the close vicinity of the super massive black hole, search for quasi-periodic oscillations in time series data and~several other physical parameters of blazars. Flux and spectral variability is also a dominant tool to explain jet as well as disk emission from blazars at different epochs of observations.
15 pages, Published in the special issue "X-Ray Flux and Spectral Variability of Blazars" of Galaxies Journal
References in corpus (13)
- Observations of the Crab Nebula with H.E.S.S
- The First VERITAS Telescope
- Simultaneous observations of PKS 2155-304 with H.E.S.S., Fermi, RXTE and ATOM: spectral energy distributions and variability in a low state
- X-ray spectral evolution of TeV BL Lac objects: eleven years of observations with BeppoSAX, XMM-Newton and SWIFT satellites
- X-ray Intraday Variability of Five TeV Blazars with NuSTAR
- INTEGRAL observations of the blazar Mrk 421 in outburst (Results of a multi-wavelength campaign)
- Multi-wavelength Intra-day Variability and Quasi-periodic Oscillation in Blazars
- XMM-Newton observations of the TeV BL Lac object PKS 2155--304 in 2006: signature of inverse Compton X-ray emission?
- X-ray Intra-day Variability of the TeV Blazar Mrk 421 with Suzaku
- Blazar variability power spectra from radio up to TeV photon energies: Mrk 421 and PKS 2155-304
- Multiwavelength Observations of the BL Lacertae Object PKS 2155-304 with XMM-Newton
- The Hard X-ray emission of the blazar PKS 2155--304
- VERITAS: Status and Latest Results