Multiwavelength observations of the blazar BL Lacertae: a new fast TeV γ-ray flare

Feng, Q.; Jorstad, S. G.; Marscher, A. P.; Lister, M. L.; Kovalev, Y. Y.; Pushkarev, A. B.; Savolainen, Tuomas; Agudo, I.; Molina, S. N.; Gómez, J. L.; Larionov, V.M.; Борман, Г. А.; Mokrushina, A. A.

doi:10.22323/1.301.0648

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…Figure 6a shows the VERITAS light curve above 200 GeV for this flare, plotted with a 4-minute binned light curve. The peak flux from BL Lacerate during this flare was measured to be roughly 180% the Crab Nebula flux (Feng, 2017).…”

Section: Extreme Variability In Fluxmentioning

confidence: 89%

Observing the Energetic Universe at Very High Energies with the VERITAS Gamma Ray Observatory

Mukherjee

2018

Preprint

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Very high energy gamma-ray observations offer indirect methods for studying the highest energy cosmic rays in our Universe. The origin of cosmic rays at energies greater than 10 18 eV remains a mystery, and many questions in particle astrophysics exist. The VERITAS observatory in southern Arizona, USA, carries out an extensive observation program of the gamma-ray sky at energies above 85 GeV. Observations of Galactic and extragalactic sources in the TeV band provide clues to the highly energetic processes occurring in these objects, and could provide indirect evidence for the origin of cosmic rays and the sites of particle acceleration in the Universe. VERITAS has now been operational for ten years with the complete array of four atmospheric Cherenkov telescopes. In this review, we present the status of VERITAS, and give few results from three of its key scientific programs: extragalactic science, Galactic physics, and study of fundamental physics and cosmology.

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Section: Extreme Variability In Fluxmentioning

confidence: 89%

Observing the Energetic Universe at Very High Energies with the VERITAS Gamma Ray Observatory

Mukherjee

2018

Preprint

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“…Two flaring episodes were reported in BL Lac-one in 2015 reported by MAGIC and the other in 2016 reported by VERITAS. The outburst in 2016 was the stronger one and was triggered by VERITAS during regular monitoring [53]. The maximum flux measured during the flare reached up to 180% of the Crab Nebula flux.…”

Section: Notable Flaresmentioning

confidence: 99%

Status of ground based gamma-ray observations

Park¹

2017

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

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This is a proceeding of a rapporteur talk given on ground-based gamma-ray astronomy at the 35 th International Cosmic-Ray Conference (ICRC) held in 2017 in Busan, Republic of Korea. A total of ∼300 contributions were presented during the ICRC over 17 gamma-ray sessions. Here, I summarize the contributions mainly focusing on the source observations performed by ground-based gamma-ray instruments and the connection between gamma rays and cosmic rays. Any such summary must necessarily be incomplete. However, I have attempted to provide a glance into recent progress that has been made in using ground-based gamma-ray observations to understand the nature of high energy particles in our Universe.

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“…Similar to the 2011 event, this VHE flare is also associated with the appearance of a candidate superluminal radio knot. More details regarding the VERITAS flare as well as interpretation of contemporaneous VLBA, optical (photometry and polarization), Swift, and Fermi-LAT data can be found in these proceedings [17].…”

Section: Recent Highlightsmentioning

confidence: 99%

Highlights from the VERITAS AGN Observation Program

Benbow,

Collaboration

2017

Preprint

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VERITAS is one of the world's most sensitive detectors of astrophysical VHE (Very High Energy; E > 100 GeV) γ-rays. This array of four 12-m imaging atmospheric-Cherenkov telescopes has operated for ∼10 years, and nearly 5000 hours of observations have been targeted on active galactic nuclei (AGN). These studies of blazars and radio galaxies have resulted in 36 detections. Most of these detections are accompanied by contemporaneous, broadband observations, which enable detailed studies of the underlying jet-powered processes. Recent highlights from the VERITAS AGN observation program and scientific results are presented.

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Multiwavelength observations of the blazar BL Lacertae: a new fast TeV γ-ray flare

Cited by 5 publications

References 12 publications

Observing the Energetic Universe at Very High Energies with the VERITAS Gamma Ray Observatory

Observing the Energetic Universe at Very High Energies with the VERITAS Gamma Ray Observatory

Status of ground based gamma-ray observations

Highlights from the VERITAS AGN Observation Program

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