VERITAS Observations of the BL Lac Object TXS 0506+056
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| dc.contributor.author | VERITAS Collaboration | |
| dc.contributor.other | Utah System of Higher Education | |
| dc.contributor.other | University of Utah | |
| dc.contributor.other | Washington University (WUSTL) | |
| dc.contributor.other | Harvard University | |
| dc.contributor.other | Smithsonian Institution | |
| dc.contributor.other | University of California System | |
| dc.contributor.other | University of California Los Angeles | |
| dc.contributor.other | Columbia University | |
| dc.contributor.other | University of Potsdam | |
| dc.contributor.other | Helmholtz Association | |
| dc.contributor.other | Deutsches Elektronen-Synchrotron (DESY) | |
| dc.contributor.other | California State University System | |
| dc.contributor.other | California Polytechnic State University San Luis Obispo | |
| dc.contributor.other | Iowa State University | |
| dc.contributor.other | Pennsylvania Commonwealth System of Higher Education (PCSHE) | |
| dc.contributor.other | Pennsylvania State University | |
| dc.contributor.other | Pennsylvania State University - University Park | |
| dc.contributor.other | McGill University | |
| dc.contributor.other | Purdue University System | |
| dc.contributor.other | Purdue University | |
| dc.contributor.other | Purdue University West Lafayette Campus | |
| dc.contributor.other | University of Minnesota System | |
| dc.contributor.other | University of Minnesota Twin Cities | |
| dc.contributor.other | California State University East Bay | |
| dc.contributor.other | Ollscoil na Gaillimhe-University of Galway | |
| dc.contributor.other | University of California Santa Cruz | |
| dc.contributor.other | University of Delaware | |
| dc.contributor.other | University of Iowa | |
| dc.contributor.other | DePauw University | |
| dc.contributor.other | University College Dublin | |
| dc.contributor.other | University System of Georgia | |
| dc.contributor.other | Georgia Institute of Technology | |
| dc.contributor.other | University of Wisconsin System | |
| dc.contributor.other | University of Wisconsin Madison | |
| dc.contributor.other | University of Chicago | |
| dc.contributor.other | Cork Institute of Technology | |
| dc.contributor.other | University of Alabama Tuscaloosa | |
| dc.date.accessioned | 2019-06-25T16:48:02Z | |
| dc.date.available | 2019-06-25T16:48:02Z | |
| dc.date.copyright | 2018 | |
| dc.date.issued | 2018-07-12 | |
| dc.identifier.citation | Abeysekara, A.U., et al. (2018): VERITAS Observations of the BL Lac Object TXS 0506+056. The Astrophysical Journal Letters, 861(2). DOI: https://doi.org/10.3847/2041-8213/aad053 | |
| dc.identifier.uri | http://ir.ua.edu/handle/123456789/5843 | |
| dc.description.abstract | On 2017 September 22, the IceCube Neutrino Observatory reported the detection of the high-energy neutrino event IC 170922A, of potential astrophysical origin. It was soon determined that the neutrino direction was consistent with the location of the gamma-ray blazar TXS 0506+056. (3FGL J0509.4+ 0541), which was in an elevated gamma-ray emission state as measured by the Fermi satellite. Very Energetic Radiation Imaging Telescope Array System (VERITAS) observations of the neutrino/blazar region started on 2017 September 23 in response to the neutrino alert and continued through 2018 February 6. While no significant very-high-energy (VHE; E > 100 GeV) emission was observed from the blazar by VERITAS in the two-week period immediately following the IceCube alert, TXS 0506+ 056 was detected by VERITAS with a significance of 5.8 standard deviations (sigma) in the full 35 hr data set. The average photon flux of the source during this period was (8.9 +/- 1.6). x. 10(-12) cm(-2) s(-1), or 1.6% of the Crab Nebula flux, above an energy threshold of 110 GeV, with a soft spectral index of 4.8. +/-. 1.3. | en_US |
| dc.format.mimetype | application/pdf | |
| dc.language | English | |
| dc.language.iso | en_US | |
| dc.publisher | IOP Publishing | |
| dc.subject | astroparticle physics | |
| dc.subject | BL Lacertae objects: individual (TXS 0506+056, VER J0509+057) | |
| dc.subject | gamma rays: galaxies | |
| dc.subject | quasars: general | |
| dc.subject | neutrinos | |
| dc.subject | RADIATION | |
| dc.subject | I. | |
| dc.subject | Astronomy & Astrophysics | |
| dc.title | VERITAS Observations of the BL Lac Object TXS 0506+056 | en_US |
| dc.type | text | |
| dc.type | Article | |
| dc.rights.holder | American Astronomical Society | |
| dc.identifier.doi | 10.3847/2041-8213/aad053 | |
| dc.identifier.orcid | https://orcid.org/0000-0001-7861-1707 | |
| dc.identifier.orcid | https://orcid.org/0000-0002-8053-7910 | |
| dc.identifier.orcid | https://orcid.org/0000-0001-6674-4238 | |
| dc.identifier.orcid | https://orcid.org/0000-0002-2126-2419 | |
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| dc.identifier.orcid | https://orcid.org/0000-0001-7483-4348 | |
| dc.identifier.orcid | https://orcid.org/0000-0002-8006-9854 | |
| dc.identifier.orcid | https://orcid.org/0000-0003-2098-170X | |
| dc.identifier.orcid | https://orcid.org/0000-0003-4641-4201 | |
| dc.identifier.orcid | https://orcid.org/0000-0001-7595-0914 | |
| dc.identifier.orcid | https://orcid.org/0000-0003-1387-8915 | |
| dc.identifier.orcid | https://orcid.org/0000-0003-4785-0101 | |
| dc.identifier.orcid | https://orcid.org/0000-0002-1067-8558 | |
| dc.identifier.orcid | https://orcid.org/0000-0002-1432-7771 | |
| dc.identifier.orcid | https://orcid.org/0000-0002-4855-2694 | |
| dc.identifier.orcid | https://orcid.org/0000-0002-8312-6930 | |
| dc.identifier.orcid | https://orcid.org/0000-0002-4837-5253 | |
| dc.identifier.orcid | https://orcid.org/0000-0001-7297-8217 | |
| dc.identifier.orcid | https://orcid.org/0000-0002-4596-8563 |
