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Pregled bibliografske jedinice broj: 938689

Ostalo

Autori: Mirzoyan, Razmik; ...; Mukherjee, Reshmi; ...; Babić, Ana; ...; Dominis Prester, Dijana; ...; Godinović, Nikola; ...; Hrupec, Dario; ...; Lelas, Damir; ...; Puljak, Ivica; ...; Surić, Tihomir; ...; Šnidarić, Iva; ...; Terzić, Tomislav; ... (the VERITAS Collaboration and the MAGIC Collaboration)
Naslov: TeV gamma-ray emission from PSR J2032+4127/ MT91 213 at periastron
Izvornik: The Astronomer's Telegram, #10971
Vrsta: otkriće
Godina: 2018
Ključne riječi: GeV ; TeV ; VHE ; Binary ; Pulsar
Sažetak:
The MAGIC and VERITAS collaborations report a continuing increase in TeV gamma-ray emission from the 50-year period pulsar/ Be-star binary system PSR J2032+4127/ MT91 213 (RA 20h32m13.13s, Dec +41d27m24.4s, J2000.0). The system reached periastron on 13 November 2017. The Swift X-ray flux has dropped dramatically over the past two weeks (see ATEL #10920 and the Swift light curve). MAGIC and VERITAS observations are being conducted as part of a coordinated long-term monitoring campaign. TeV emission associated with the binary was first reported in ATEL #10810, covering observations up to late September 2017. The TeV flux has further increased since then. Preliminary analysis of the most recent observations gives integral fluxes above 200 GeV of 1.9e-11 ± 0.4e-11 photons cm^-2 s^-1 for an observation of 1.9 hours on Nov 12 (MJD 58069.8) with MAGIC. This implies an increase in the flux of almost a factor 10 with respect to the average flux in June-August. The flux measured by VERITAS is also enhanced, at the level of 1.3e-11 ± 0.2e-11 photons cm^-2 s^-1 for 4 hours of observations between Nov 10 and Nov 13. TeV observations with both instruments will continue with highest priority. We strongly encourage multi-wavelength observations.
Projekt / tema: HRZZ-IP-06-2016-9782
Izvorni jezik: ENG
Znanstvena područja:
Fizika
URL Internet adrese: http://www.astronomerstelegram.org/?read=10971
Upisao u CROSBI: Dario Hrupec (dhrupec@fizika.unios.hr), 18. Svi. 2018. u 09:38 sati



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