Observation of Radio Galaxies with HAWC

Avila, Daniel; Alfaro, R.; Galván, Antonio; González, M. M.; Fraija, N.; Klinger, Marc

doi:10.22323/1.301.0607

Cited by 1 publication

(3 citation statements)

References 21 publications

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“…The results from HAWC, on the other hand, are the most constraining limits on two year average flux averages for these AGNs at TeV energies. Separate analyses of AGNs using different information are the topics of other HAWC studies [12]. Figure 6: One example (B3 2247+381) showing how HAWC's 95CL upper limit can constrain the flux to a level lower than Fermi-LAT extrapolation result, based on 3FHL information.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the flux of M 87 has been observed to be variable and the 2 years that HAWC covers might be dominated by lower flux state compared to the earlier measurements from these IACTs. For a separate discussion of M 87 with HAWC data, see [12].…”

Section: Preliminarymentioning

confidence: 99%

Section: Preliminarymentioning

confidence: 99%

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Survey of nearby active galactic nuclei with the HAWC Observatory

Ren¹,

Lauer²,

Matthews³

2017

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017)

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For a complete author list, see http://www.hawc-observatory.org/collaboration/ The High Altitude Water Cherenkov Observatory (HAWC) has a wide field-of-view (FOV, ∼2sr) and a high duty cycle (∼95%), which make it a powerful survey and monitoring experiment for sources of TeV gamma rays. We present a systematic survey of gamma-ray sources based on the Fermi 3FHL catalog. Sources are restricted to HAWC's FOV (Declination 19 • ± 40 • ) and to extragalactic sources with redshift: 0.001 < z < 0.3. Extragalactic gamma-ray sources are dominated by active galactic nuclei (AGN) and TeV gamma-ray sources are mostly BL Lactype blazars. The study of AGNs through high energy gamma rays has opened a new window into the extreme processes of particle acceleration in the jets of these objects and provides a way to study the photon propagation and extra-galactic background light. We have improved the HAWC sensitivity at low energies (100 GeV to 1 TeV) based on the Crab pulsar, which is an excellent calibration source for TeV gamma rays. We will present the results of searching for and monitoring nearby AGNs with the improved analysis.

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Section: Discussionmentioning

confidence: 99%

Section: Preliminarymentioning

confidence: 99%