12–23 Jul 2021
Online
Europe/Berlin timezone

Monitoring the radio galaxy M87 with HAWC

16 Jul 2021, 18:00
1h 30m
TBA

TBA

Poster GAI | Gamma Ray Indirect Discussion

Speaker

Tomás Capistrán (Instituto de Astronomía, UNAM)

Description

Studies of radio galaxies at TeV energies are of particular interest because their jets are misaligned with respect to our sightline. This provides us with a unique opportunity for studying the structure of their jets, the radiative processes, and the acceleration mechanisms involved in them. 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 is providing 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 2019. HAWC's observation are consistent with the low acivity 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.

Keywords

Radio Galaxies, High Energy, HAWC

Subcategory Experimental Results
Collaboration HAWC

Primary authors

Tomás Capistrán (Instituto de Astronomía, UNAM) Daniel Avila Rojas (Instituto de Física, UNAM) Dr Maria Magdalena Gonzalez (Instituto de Astronomía, UNAM) Nissim Fraija (Astronomy Institute) Dr Ruben Alfaro (Instituto de Física, UNAM) For the HAWC Collaboration

Presentation materials