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Pregled bibliografske jedinice broj: 631116

Ostalo

Autori: Aleksić, Jelena; ...; Dominis Prester, Dijana; ...; Ferenc, Daniel; ...; Godinović, Nikola; ...; Hrupec, Dario; ...; Lelas, Damir; ...; Puljak, Ivica; ...; Surić, Tihomir; ...; Šnidarić, Iva; ...; Terzić, Tomislav; ...
Naslov: MAGIC detection of renewed activity from the radio galaxy IC 310
Izvornik: The Astronomer's Telegram, #4583
Vrsta: opažanje
Godina: 2012
Ključne riječi: Gamma Ray; TeV; VHE; Request for Observations; AGN
Sažetak:
The MAGIC telescopes have observed a high VHE (E>~100 GeV) gamma-ray flux from the galaxy IC 310. The object (RA: 03h 16m 43.0s, Dec: +41d 19m 29s, J2000) is a TeV radio-loud galaxy located in the Perseus Cluster of galaxies at redshift 0.0189 (Falco et al. 1999). Although formerly considered to be an archetypical head-tail galaxy, recent radio-interferometric observations have shown that IC 310 hosts a blazar-type central engine (Kadler et al. 2012, A&A, 538, L1). The source was discovered as a VHE emitter by MAGIC in the 2009-2010 campaign, showing a mean flux level of (2.5 +- 0.4)% of the Crab Nebula flux above 300 GeV (J. Aleksic et al. (MAGIC Coll.), Astrophys. J. 723(2010) L207). MAGIC observations were carried out on November 12, 2012 (MJD 56243.9 - 56244.1) right after the upgrade of the MAGIC telescopes has been completed. Preliminary analysis resulted in a detection with the significance of 25 standard deviations. The mean flux above 300 GeV is higher than 50% of the Crab Nebula flux which is the highest ever detected from IC 310 in the VHE range. MAGIC will continue to observe the source and multi-frequency observations are strongly encouraged.
Projekt / tema: 098-0982931-2875, HRZZ-09/176
Izvorni jezik: ENG
Znanstvena područja:
Fizika
URL Internet adrese: http://www.astronomerstelegram.org/?read=4583
Upisao u CROSBI: Dario Hrupec (Dario.Hrupec@irb.hr), 29. Svi. 2013. u 10:45 sati



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