| Issue |
EPJ Web of Conferences
Volume 61, 2013
The Innermost Regions of Relativistic Jets and Their Magnetic Fields
|
|
|---|---|---|
| Article Number | 04012 | |
| Number of page(s) | 4 | |
| Section | Emission across the electromagnetic spectrum I | |
| DOI | https://doi.org/10.1051/epjconf/20136104012 | |
| Published online | 09 December 2013 | |
https://doi.org/10.1051/epjconf/20136104012
Observations of low and intermediate-frequency-peaked BL Lacs above 100 GeV with VERITAS
Department of Physics and Astronomy, Barnard College, Columbia University, NY 10027, USA
a e-mail: errando@astro.columbia.edu
Published online: 9 December 2013
Most of the ~ 50 blazars detected to date at TeV energies (E > 0.1 TeV) are high-frequency-peaked BL Lacs (HBLs). Only a handful episodic detections of low- and intermediate-frequency-peaked BL Lacs (LBL/IBLs, with synchrotron peak frequencies in the infrared and optical regime) have been reported by ground-based gamma-ray telescopes, typically during high-flux states. The VERITAS array located in southern Arizona has observed five known TeV LBL/IBLs since 2009: 3C 66A, WComae, PKS 1424+240, S5 0716+714 and BL Lacertae, with exposures of 5-10 hours/year, which so far resulted in the detection of a bright, sub-hour timescale gamma-ray flare of BL Lacertae in June 2011. We also report the detection and characterization of two new IBLs: VER J0521+211 and B2 1215+30.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.