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Astrophysics > High Energy Astrophysical Phenomena

arXiv:2108.00113 (astro-ph)
[Submitted on 31 Jul 2021]

Title:Monitoring the radio galaxy M87 with HAWC

Authors:T. Capistrán, D. Avila Rojas, M. M. González, N. Fraija, R. Alfaro (for the HAWC collaboration)
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Abstract:Studies of radio galaxies at TeV energies are fascinating because their jets are misaligned concerning our sightline. Thus, it provides us with a unique opportunity to study the structure of their jets, the radiative processes, and the acceleration mechanisms involved in them. In addition, some radio galaxies have presented variability in their emission, like the giant radio galaxy M87, which has reported several activity periods. Due to its duty cycle >95% and instantaneous field of view of 2 sr, HAWC provides daily monitoring of variable sources visible from the Northern Hemisphere. In this work, we show the results of monitoring M87 between January 2015 and December 2018. HAWC's observations are consistent with the low activity state reported by other instruments (like H.E.S.S and MAGIC). However, after September 2017 (~MJD 58000), the HAWC measurements of M87 show hints of higher activity.
Comments: Presented at the 37th International Cosmic Ray Conference (ICRC2021), Berlin, Germany - Online
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)
Cite as: arXiv:2108.00113 [astro-ph.HE]
  (or arXiv:2108.00113v1 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.2108.00113
Related DOI: https://doi.org/10.22323/1.395.0839

Submission history

From: Tomás Capistrán [view email]
[v1] Sat, 31 Jul 2021 00:07:04 UTC (892 KB)
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