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Journal article
Discovery of Very-high-energy Emission from RGB J2243+203 and Derivation of Its Redshift Upper Limit
The Astrophysical journal. Supplement series, v 233(1)
01 Nov 2017
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Very-high-energy (VHE; > 100 GeV) gamma-ray emission from the blazar RGB J2243+203 was discovered with the VERITAS Cherenkov telescope array, during the period between 2014 December 21 and 24. The VERITAS energy spectrum from this source can be fitted by a power law with a photon index of 4.6 +/- 0.5, and a flux normalization at 0.15 TeV of (6.3 +/- 1.1) x 10(-10) cm(-2) s(-1) TeV-1. The integrated Fermi-LAT flux from 1 to 100 GeV during the VERITAS detection is (4.1 +/- 0.8) x 10(-8) cm(-2) s(-1), which is an order of magnitude larger than the four-year-averaged flux in the same energy range reported in the 3FGL catalog, (4.0 +/- 0.1 x 10(-9) cm(-2) s(-1)). The detection with VERITAS triggered observations in the X-ray band with the Swift-XRT. However, due to scheduling constraints Swift-XRT observations were performed 67 hr after the VERITAS detection, rather than simultaneously with the VERITAS observations. The observed X-ray energy spectrum between 2 and 10 keV can be fitted with a power law with a spectral index of 2.7 +/- 0.2, and the integrated photon flux in the same energy band is (3.6 +/- 0.6) x 10(-13) cm(-2) s(-1). EBL-model-dependent upper limits of the blazar redshift have been derived. Depending on the EBL model used, the upper limit varies in the range from z < 0.9 to z < 1.1.
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Details
- Title
- Discovery of Very-high-energy Emission from RGB J2243+203 and Derivation of Its Redshift Upper Limit
- Creators
- A. U. Abeysekara - University of UtahS. Archambault - McGill UniversityA. Archer - Washington University in St. LouisW. Benbow - Harvard UniversityR. Bird - University of California, Los AngelesR. Brose - University of PotsdamM. Buchovecky - University of California, Los AngelesJ. H. Buckley - Washington University in St. LouisV. Bugaev - Washington University in St. LouisM. Cerruti - Harvard UniversityM. P. Connolly - National University of Ireland, GalwayW. Cui - Tsinghua UniversityA. Falcone - Pennsylvania State UniversityQ. Feng - McGill UniversityJ. P. Finley - Purdue University West LafayetteH. Fleischhack - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyL. Fortson - University of MinnesotaA. Furniss - California State University, East BayG. H. Gillanders - National University of Ireland, GalwayS. Griffin - McGill UniversityJ. Grube - Stevens Institute of TechnologyM. Huetten - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyD. Hanna - McGill UniversityO. Hervet - University of California, Santa CruzJ. Holder - University of DelawareT. B. Humensky - Columbia UniversityC. A. Johnson - University of California, Santa CruzP. Kaaret - University of IowaP. Kar - University of UtahN. Kelley-Hoskins - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyM. Kertzman - DePauw UniversityD. Kieda - University of UtahM. Krause - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyF. Krennrich - Iowa State UniversityS. Kumar - University of DelawareM. J. Lang - National University of Ireland, GalwayG. Maier - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyS. McArthur - Purdue University West LafayetteP. Moriarty - National University of Ireland, GalwayR. Mukherjee - Columbia UniversityD. Nieto - Columbia UniversityS. O'Brien - University College DublinR. A. Ong - University of California, Los AngelesA. N. Otte - Georgia Institute of TechnologyN. Park - University of ChicagoA. Petrashyk - Columbia UniversityM. Pohl - University of PotsdamA. Popkow - University of California, Los AngelesE. Pueschel - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyJ. Quinn - University College DublinK. Ragan - McGill UniversityP. T. Reynolds - Cork Institute of TechnologyG. T. Richards - Georgia Institute of TechnologyE. Roache - Harvard UniversityC. Rulten - University of MinnesotaI. Sadeh - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyM. Santander - Columbia UniversityG. H. Sembroski - Purdue University West LafayetteK. Shahinyan - University of MinnesotaD. Staszak - University of ChicagoI. Telezhinsky - University of PotsdamJ. Tyler - McGill UniversityV. V. Vassiliev - University of California, Los AngelesS. P. Wakely - University of ChicagoO. M. Weiner - Columbia UniversityA. Weinstein - Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USAP. Wilcox - University of IowaA. Wilhelm - University of PotsdamD. A. Williams - University of California, Santa CruzB. Zitzer - McGill University
- Publication Details
- The Astrophysical journal. Supplement series, v 233(1)
- Publisher
- Iop Publishing Ltd
- Number of pages
- 6
- Grant note
- NSERC in Canada; Natural Sciences and Engineering Research Council of Canada (NSERC) Smithsonian Institution U.S. National Science Foundation; National Science Foundation (NSF) 1407326 / Division Of Physics; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) U.S. Department of Energy Office of Science; United States Department of Energy (DOE) 1307311 / Direct For Mathematical & Physical Scien; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000415043000006
- Scopus ID
- 2-s2.0-85035309751
- Other Identifier
- 991019201499504721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics