Journal article
Discovery of TeV Gamma Ray Emission from Tycho's Supernova Remnant
Astrophysical journal. Letters, Vol.730(2), L20
02/18/2011
DOI: 10.1088/2041-8205/730/2/L20
Abstract
We report the discovery of TeV gamma-ray emission from the Type Ia supernova remnant (SNR) G120.1+1.4, known as Tycho's SNR. Observations performed in the period 2008–2010 with the VERITAS ground-based gamma-ray observatory reveal weak emission coming from the direction of the remnant, compatible with a point source located at 00h25m27fs0, + 64°10′50″ (J2000). The TeV photon spectrum measured by VERITAS can be described with a power law dN/dE = C(E/3.42 TeV)−Γ with Γ = 1.95 ± 0.51stat ± 0.30sys and C = (1.55 ± 0.43stat ± 0.47sys) × 10−14 cm−2 s−1 TeV−1. The integral flux above 1 TeV corresponds to ∼0.9% of the steady Crab Nebula emission above the same energy, making it one of the weakest sources yet detected in TeV gamma rays. We present both leptonic and hadronic models that can describe the data. The lowest magnetic field allowed in these models is ∼80 μG, which may be interpreted as evidence for magnetic field amplification.
Details
- Title: Subtitle
- Discovery of TeV Gamma Ray Emission from Tycho's Supernova Remnant
- Creators
- V. A Acciari - Harvard UniversityE Aliu - Columbia UniversityT Arlen - University of California, Los AngelesT Aune - Santa Cruz Institute for Particle PhysicsM Beilicke - Washington University in St. LouisW Benbow - Harvard UniversityS. M Bradbury - University of LeedsJ. H Buckley - Washington University in St. LouisV Bugaev - Washington University in St. LouisK Byrum - Argonne National LaboratoryA Cannon - University College DublinA Cesarini - Ollscoil na Gaillimhe – University of GalwayL Ciupik - Adler PlanetariumE Collins-HughesW Cui - Purdue University West LafayetteR Dickherber - Washington University in St. LouisC Duke - Grinnell CollegeM Errando - Columbia UniversityJ. P Finley - Purdue University West LafayetteG Finnegan - University of UtahL Fortson - Adler PlanetariumA Furniss - Santa Cruz Institute for Particle PhysicsN Galante - Harvard UniversityD Gall - Purdue University West LafayetteG. H Gillanders - Ollscoil na Gaillimhe – University of GalwayS Godambe - University of UtahS Griffin - McGill UniversityJ Grube - Adler PlanetariumR Guenette - McGill UniversityG Gyuk - Adler PlanetariumD Hanna - McGill UniversityJ Holder - University of DelawareJ. P Hughes - Rutgers, The State University of New JerseyC. M Hui - University of UtahT. B Humensky - University of ChicagoP Kaaret - University of IowaN Karlsson - Adler PlanetariumM Kertzman - DePauw UniversityD Kieda - University of UtahH Krawczynski - Washington University in St. LouisF Krennrich - Iowa State UniversityM. J Lang - Ollscoil na Gaillimhe – University of GalwayS LeBohec - University of UtahA. S Madhavan - Iowa State UniversityG MaierP Majumdar - University of California, Los AngelesS McArthur - Washington University in St. LouisA McCann - McGill UniversityP Moriarty - Galway-Mayo Institute of TechnologyR Mukherjee - Columbia UniversityR. A Ong - University of California, Los AngelesM Orr - Iowa State UniversityA. N Otte - Santa Cruz Institute for Particle PhysicsD Pandel - University of IowaN Park - University of ChicagoJ. S Perkins - Harvard UniversityM Pohl - University of PotsdamJ Quinn - University College DublinK Ragan - McGill UniversityL. C Reyes - University of ChicagoP. T Reynolds - Cork Institute of TechnologyE Roache - Harvard UniversityH. J Rose - University of LeedsD. B Saxon - University of DelawareM Schroedter - Iowa State UniversityG. H Sembroski - Purdue University West LafayetteG. Demet Senturk - Columbia UniversityP Slane - Harvard UniversityA. W Smith - Argonne National LaboratoryG Tešić - McGill UniversityM Theiling - Harvard UniversityS Thibadeau - Washington University in St. LouisK Tsurusaki - University of IowaA Varlotta - Purdue University West LafayetteV. V Vassiliev - University of California, Los AngelesS Vincent - University of UtahM Vivier - University of DelawareS. P Wakely - University of ChicagoJ. E Ward - University College DublinT. C Weekes - Harvard UniversityA Weinstein - University of California, Los AngelesT Weisgarber - University of ChicagoD. A Williams - Santa Cruz Institute for Particle PhysicsM Wood - University of California, Los AngelesB Zitzer - Purdue University West Lafayette
- Resource Type
- Journal article
- Publication Details
- Astrophysical journal. Letters, Vol.730(2), L20
- DOI
- 10.1088/2041-8205/730/2/L20
- ISSN
- 2041-8205
- eISSN
- 2041-8213
- Publisher
- The American Astronomical Society
- Language
- English
- Date published
- 02/18/2011
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199855902771
Metrics
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