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VERITAS Observations of Relativistic Outflows in Low- and Intermediate-Frequency BL Lac Objects
Deutsches Elektronen-Synchrotron (DESY), Germany.ORCID iD: 0000-0002-2378-0893
2014 (English)In: International Journal of Modern Physics, Conference Series, ISSN 2010-1945, Vol. 28, 1460178Article in journal (Refereed) Published
Abstract [en]

The majority of blazars detected at very high energies (VHE; E > 100 GeV) are high-frequency-peaked BL Lac objects (HBLs). Low- and intermediate-frequency-peaked BL Lacs (LBLs/IBLs with synchrotron-peak frequencies in the infrared and optical regime) are generally more powerful, more luminous, and have a richer jet environment than HBLs. However, only a handful of these IBL and LBLs have been detected by ground-based gamma-ray telescopes, typically during high-flux states. The VERITAS array has been monitoring five known VHE LBLs/IBLs since 2009: 3C 66A, W Comae, PKS 1424+240, S5 0716+714 and BL Lacertae, with typical exposures of 5-10 hours per year. The results of these long-term observations are presented, including a bright, subhour-scale VHE flare of BL Lacertae in June 2011, the first low-state detections of 3C 66A and W Comae, and the detection and characterization of the IBL B2 1215+30.

Place, publisher, year, edition, pages
World Scientific, 2014. Vol. 28, 1460178
Keyword [en]
AGN, gamma rays, Non-thermal, VERITAS, Active and peculiar galaxies and related systems, Gamma-ray sources, Quasars
National Category
Astronomy, Astrophysics and Cosmology
Research subject
Physics, Astroparticle Physics
Identifiers
URN: urn:nbn:se:lnu:diva-42783DOI: 10.1142/S2010194514601781OAI: oai:DiVA.org:lnu-42783DiVA: diva2:807390
Conference
High Energy Phenomena in Relativistic Outflows (HEPRO IV)
Available from: 2015-04-23 Created: 2015-04-23 Last updated: 2015-05-12Bibliographically approved

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Prokoph, Heike
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf