DISCOVERY OF TeV GAMMA-RAY EMISSION FROM TYCHOS SUPERNOVA REMNANT

Patrick Moriarty

DISCOVERY OF TeV GAMMA-RAY EMISSION FROM TYCHOS SUPERNOVA REMNANT

Patrick Moriarty

Physics

Research output: Contribution to a Journal (Peer & Non Peer) › Article › peer-review

Abstract

We report the discovery of TeV gamma-ray emission from the Type Ia supernova remnant (SNR) G120.1+1.4, known as Tychos 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 00(h)25(m)27(s).0, +64 degrees 1050 (J2000). The TeV photon spectrum measured by VERITAS can be described with a power law dN dE = C(E 3.42 TeV)(-Gamma) with Gamma = 1.95 + - 0.51(stat) + - 0.30(sys) and C = (1.55 + - 0.43(stat) + - 0.47(sys)) x 10(-14) cm(-2) s(-1) TeV-1. The integral flux above 1 TeV corresponds to similar 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 similar to 80 mu G, which may be interpreted as evidence for magnetic field amplification.

Original language	English (Ireland)
Journal	ASTROPHYSICAL JOURNAL LETTERS
Volume	730
Publication status	Published - 1 Apr 2011

Authors (Note for portal: view the doc link for the full list of authors)

Authors
Acciari, VA,Aliu, E,Arlen, T,Aune, T,Beilicke, M,Benbow, W,Bradbury, SM,Buckley, JH,Bugaev, V,Byrum, K,Cannon, A,Cesarini, A,Ciupik, L,Collins-Hughes, E,Cui, W,Dickherber, R,Duke, C,Errando, M,Finley, JP,Finnegan, G,Fortson, L,Furniss, A,Galante, N,Gall, D,Gillanders, GH,Godambe, S,Griffin, S,Grube, J,Guenette, R,Gyuk, G,Hanna, D,Holder, J,Hughes, JP,Hui, CM,Humensky, TB,Kaaret, P,Karlsson, N,Kertzman, M,Kieda, D,Krawczynski, H,Krennrich, F,Lang, MJ,LeBohec, S,Madhavan, AS,Maier, G,Majumdar, P,McArthur, S,McCann, A,Moriarty, P,Mukherjee, R,Ong, RA,Orr, M,Otte, AN,Pandel, D,Park, NH,Perkins, JS,Pohl, M,Quinn, J,Ragan, K,Reyes, LC,Reynolds, PT,Roache, E,Rose, HJ,Saxon, DB,Schroedter, M,Sembroski, GH,Senturk, GD,Slane, P,Smith, AW,Tesic, G,Theiling, M,Thibadeau, S,Tsurusaki, K,Varlotta, A,Va

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@article{fd1ad8dc5a7e438b9518c43de8c87ffc,

title = "DISCOVERY OF TeV GAMMA-RAY EMISSION FROM TYCHOS SUPERNOVA REMNANT",

abstract = "We report the discovery of TeV gamma-ray emission from the Type Ia supernova remnant (SNR) G120.1+1.4, known as Tychos 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 00(h)25(m)27(s).0, +64 degrees 1050 (J2000). The TeV photon spectrum measured by VERITAS can be described with a power law dN dE = C(E 3.42 TeV)(-Gamma) with Gamma = 1.95 + - 0.51(stat) + - 0.30(sys) and C = (1.55 + - 0.43(stat) + - 0.47(sys)) x 10(-14) cm(-2) s(-1) TeV-1. The integral flux above 1 TeV corresponds to similar 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 similar to 80 mu G, which may be interpreted as evidence for magnetic field amplification.",

author = "Patrick Moriarty",

year = "2011",

month = apr,

day = "1",

language = "English (Ireland)",

volume = "730",

journal = "ASTROPHYSICAL JOURNAL LETTERS",

}

TY - JOUR

T1 - DISCOVERY OF TeV GAMMA-RAY EMISSION FROM TYCHOS SUPERNOVA REMNANT

AU - Moriarty, Patrick

PY - 2011/4/1

Y1 - 2011/4/1

N2 - We report the discovery of TeV gamma-ray emission from the Type Ia supernova remnant (SNR) G120.1+1.4, known as Tychos 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 00(h)25(m)27(s).0, +64 degrees 1050 (J2000). The TeV photon spectrum measured by VERITAS can be described with a power law dN dE = C(E 3.42 TeV)(-Gamma) with Gamma = 1.95 + - 0.51(stat) + - 0.30(sys) and C = (1.55 + - 0.43(stat) + - 0.47(sys)) x 10(-14) cm(-2) s(-1) TeV-1. The integral flux above 1 TeV corresponds to similar 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 similar to 80 mu G, which may be interpreted as evidence for magnetic field amplification.

AB - We report the discovery of TeV gamma-ray emission from the Type Ia supernova remnant (SNR) G120.1+1.4, known as Tychos 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 00(h)25(m)27(s).0, +64 degrees 1050 (J2000). The TeV photon spectrum measured by VERITAS can be described with a power law dN dE = C(E 3.42 TeV)(-Gamma) with Gamma = 1.95 + - 0.51(stat) + - 0.30(sys) and C = (1.55 + - 0.43(stat) + - 0.47(sys)) x 10(-14) cm(-2) s(-1) TeV-1. The integral flux above 1 TeV corresponds to similar 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 similar to 80 mu G, which may be interpreted as evidence for magnetic field amplification.

M3 - Article

VL - 730

JO - ASTROPHYSICAL JOURNAL LETTERS

JF - ASTROPHYSICAL JOURNAL LETTERS

ER -

DISCOVERY OF TeV GAMMA-RAY EMISSION FROM TYCHOS SUPERNOVA REMNANT

Abstract

Authors (Note for portal: view the doc link for the full list of authors)

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