2016/05/23 by Lab Saha, L. Saha · 8 citations
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #Electron #Fermi Gamma-ray Space Telescope #Gamma ray #Hadron #Nebula #Nuclear physics #Physics #Pulsar #Pulsar wind nebula #Radio Astronomy Observations and Technology #Stars #Supernova #Supernova remnant #astro-ph.HE
paper · pdf · doi:10.1093/mnras/stw1255
published in Monthly Notices of the Royal Astronomical Society 460(4), 3563-3569 (Oxford University Press) · 8 pages, 5 figures, accepted for publication in MNRAS
arxiv created 2016/05/23 · openalex publication_date 2016/05/25 · openalex created_date 2016/06/24 · arxiv updated 2018/03/08 · openalex updated_date 2026/08/05
We present multiwavelength studies of a TeV gamma-ray source VER J2016+371 suggested to be associated with a supernova remnant CTB 87 (G74.9+1.2) and based on X-ray and radio morphologies, CTB 87 is identified as an evolved pulsar wind nebula. A source in the vicinity of VER J2016+371 is also detected at GeV energies by Fermi Gamma Ray Space Telescope suggesting a likely counterpart at GeV energies. We find that a broken power-law (BPL) distribution of electrons can explain the observed data at radio, X-ray and TeV energies, however, is not sufficient to explain the data at MeV–GeV energies. A Maxwellian distribution of electrons along with the BPL distribution of electrons in low magnetic fields can explain the observed multiwavelength data spanned from radio to TeV energies suggesting this as the most likely scenario for this source. We also find that although the hadronic model can explain the observed GeV–TeV data for the ambient matter density of ∼ 20 cm− 3, no observational support for such high ambient density makes this hadronic scenario unlikely for this source.