Prospects for gamma-ray observations of narrow-line Seyfert 1 galaxies with the Cherenkov Telescope Array

0546730 - FZÚ 2022 RIV GB eng J - Journal Article
Romano, P. … Total 6 authors
Prospects for gamma-ray observations of narrow-line Seyfert 1 galaxies with the Cherenkov Telescope Array.
Monthly Notices of the Royal Astronomical Society. Roč. 481, č. 4 (2018), s. 5046-5061. ISSN 0035-8711. E-ISSN 1365-2966
Research Infrastructure: CTA-CZ - 90046
Keywords : galaxies: jets * galaxies: Seyfert * gamma rays: galaxies
OECD category: Particles and field physics
Impact factor: 5.231, year: 2018
Method of publishing: Limited access
https://doi.org/10.1093/mnras/sty2484

Gamma-ray-emitting narrow-line Seyfert 1 (gamma-NLS1) galaxies are thought to harbour relatively low-mass black holes (10(6)-10(8)M(circle dot)) accreting close to the Eddington limit. They show characteristics similar to those of blazars, such as flux and spectral variability in the gamma-ray energy band and radio properties which point towards the presence of a relativistic jet. These characteristics make them an intriguing class of sources to be investigated with the Cherenkov Telescope Array (CTA), the next-generation ground-based gamma-ray observatory. We present our extensive set of simulations of all currently known gamma-ray emitters identified as NLS1s (20 sources), investigating their detections and spectral properties, taking into account the effect of both the extragalactic background light in the propagation of gamma-rays and intrinsic absorption components. We find that the prospects for observations of gamma-NLS1 with CTA are promising.
Permanent Link: http://hdl.handle.net/11104/0323131