Discovery of TeV gamma-ray emission from Tycho's supernova remnant

V. A. Acciari; E. Aliu; T. Arlen; T. Aune; M. Beilicke; W. Benbow; S. M. Bradbury; J. H. Buckley; V. Bugaev; K. Byrum; A. Cannon; A. Cesarini; L. Ciupik; E. Collins-Hughes; W. Cui; R. Dickherber; C. Duke; M. Errando; J. P. Finley; G. Finnegan; L. Fortson; A. Furniss; N. Galante; D. Gall; G. H. Gillanders; S. Godambe; S. Griffin; J. Grube; R. Guenette; G. Gyuk; D. Hanna; J. Holder; J. P. Hughes; C. M. Hui; T. B. Humensky; P. Kaaret; N. Karlsson; M. Kertzman; D. Kieda; H. Krawczynski; F. Krennrich; M. J. Lang; S. Lebohec; A. S. Madhavan; G. Maier; P. Majumdar; S. McArthur; A. McCann; P. Moriarty; R. Mukherjee

doi:10.1088/2041-8205/730/2/L20

Discovery of TeV gamma-ray emission from Tycho's supernova remnant

V. A. Acciari, E. Aliu, T. Arlen, T. Aune, M. Beilicke, W. Benbow, S. M. Bradbury, J. H. Buckley, V. Bugaev, K. Byrum, A. Cannon, A. Cesarini, L. Ciupik, E. Collins-Hughes, W. Cui, R. Dickherber, C. Duke, M. Errando, J. P. Finley, G. FinneganL. Fortson, A. Furniss, N. Galante, D. Gall, G. H. Gillanders, S. Godambe, S. Griffin, J. Grube, R. Guenette, G. Gyuk, D. Hanna, J. Holder, J. P. Hughes, C. M. Hui, T. B. Humensky, P. Kaaret, N. Karlsson, M. Kertzman, D. Kieda, H. Krawczynski, F. Krennrich, M. J. Lang, S. Lebohec, A. S. Madhavan, G. Maier, P. Majumdar, S. McArthur, A. McCann, P. Moriarty, R. Mukherjee

Physics and Astronomy (Twin Cities)

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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 00^h25^m270, + 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 ± 0.51_stat 0.30_sys and C = (1.55 ± 0.43 _stat ± 0.47_sys) × 10^-14cm ^-2s^-1TeV^-1. The integral flux above 1TeV 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.

Original language	English (US)
Article number	L20
Journal	Astrophysical Journal Letters
Volume	730
Issue number	2 PART II
DOIs	https://doi.org/10.1088/2041-8205/730/2/L20
State	Published - Apr 1 2011

Bibliographical note

Funding Information:
This research is supported by grants from the U.S. Department of Energy, the U.S. National Science Foundation and the Smithsonian Institution, by the Natural Sciences and Engineering Research Council (NSERC) in Canada, by Science Foundation Ireland (SFI 10/RFP/AST2748), and by the Science and Technology Facilities Council in the UK. The research presented in this Letter has used data from the Canadian Galactic Plane Survey, a Canadian project with international partners, supported by NSERC. D.B.S. acknowledges the NASA Delaware Space Grant Program for its support of this research. J.P.H. acknowledges support from NASA grant NNX08AZ86G to Rutgers University. Facility: VERITAS

Keywords

gamma rays: general

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Acciari, V. A., Aliu, E., Arlen, T., Aune, T., Beilicke, M., Benbow, W., Bradbury, S. M., Buckley, J. H., Bugaev, V., Byrum, K., Cannon, A., Cesarini, A., Ciupik, L., Collins-Hughes, E., Cui, W., Dickherber, R., Duke, C., Errando, M., Finley, J. P., ... Mukherjee, R. (2011). Discovery of TeV gamma-ray emission from Tycho's supernova remnant. Astrophysical Journal Letters, 730(2 PART II), Article L20. https://doi.org/10.1088/2041-8205/730/2/L20

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 2011, 'Discovery of TeV gamma-ray emission from Tycho's supernova remnant', Astrophysical Journal Letters, vol. 730, no. 2 PART II, L20. https://doi.org/10.1088/2041-8205/730/2/L20

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title = "Discovery of TeV gamma-ray emission from Tycho's 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 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 00h25m270, + 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 ± 0.43 stat ± 0.47sys) × 10-14cm -2s-1TeV-1. The integral flux above 1TeV 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.",

keywords = "gamma rays: general",

author = "Acciari, {V. A.} and E. Aliu and T. Arlen and T. Aune and M. Beilicke and W. Benbow and Bradbury, {S. M.} and Buckley, {J. H.} and V. Bugaev and K. Byrum and A. Cannon and A. Cesarini and L. Ciupik and E. Collins-Hughes and W. Cui and R. Dickherber and C. Duke and M. Errando and Finley, {J. P.} and G. Finnegan and L. Fortson and A. Furniss and N. Galante and D. Gall and Gillanders, {G. H.} and S. Godambe and S. Griffin and J. Grube and R. Guenette and G. Gyuk and D. Hanna and J. Holder and Hughes, {J. P.} and Hui, {C. M.} and Humensky, {T. B.} and P. Kaaret and N. Karlsson and M. Kertzman and D. Kieda and H. Krawczynski and F. Krennrich and Lang, {M. J.} and S. Lebohec and Madhavan, {A. S.} and G. Maier and P. Majumdar and S. McArthur and A. McCann and P. Moriarty and R. Mukherjee",

note = "Funding Information: This research is supported by grants from the U.S. Department of Energy, the U.S. National Science Foundation and the Smithsonian Institution, by the Natural Sciences and Engineering Research Council (NSERC) in Canada, by Science Foundation Ireland (SFI 10/RFP/AST2748), and by the Science and Technology Facilities Council in the UK. The research presented in this Letter has used data from the Canadian Galactic Plane Survey, a Canadian project with international partners, supported by NSERC. D.B.S. acknowledges the NASA Delaware Space Grant Program for its support of this research. J.P.H. acknowledges support from NASA grant NNX08AZ86G to Rutgers University. Facility: VERITAS",

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T1 - Discovery of TeV gamma-ray emission from Tycho's supernova remnant

AU - Acciari, V. A.

AU - Aliu, E.

AU - Arlen, T.

AU - Aune, T.

AU - Beilicke, M.

AU - Benbow, W.

AU - Bradbury, S. M.

AU - Buckley, J. H.

AU - Bugaev, V.

AU - Byrum, K.

AU - Cannon, A.

AU - Cesarini, A.

AU - Ciupik, L.

AU - Collins-Hughes, E.

AU - Cui, W.

AU - Dickherber, R.

AU - Duke, C.

AU - Errando, M.

AU - Finley, J. P.

AU - Finnegan, G.

AU - Fortson, L.

AU - Furniss, A.

AU - Galante, N.

AU - Gall, D.

AU - Gillanders, G. H.

AU - Godambe, S.

AU - Griffin, S.

AU - Grube, J.

AU - Guenette, R.

AU - Gyuk, G.

AU - Hanna, D.

AU - Holder, J.

AU - Hughes, J. P.

AU - Hui, C. M.

AU - Humensky, T. B.

AU - Kaaret, P.

AU - Karlsson, N.

AU - Kertzman, M.

AU - Kieda, D.

AU - Krawczynski, H.

AU - Krennrich, F.

AU - Lang, M. J.

AU - Lebohec, S.

AU - Madhavan, A. S.

AU - Maier, G.

AU - Majumdar, P.

AU - McArthur, S.

AU - McCann, A.

AU - Moriarty, P.

AU - Mukherjee, R.

N1 - Funding Information: This research is supported by grants from the U.S. Department of Energy, the U.S. National Science Foundation and the Smithsonian Institution, by the Natural Sciences and Engineering Research Council (NSERC) in Canada, by Science Foundation Ireland (SFI 10/RFP/AST2748), and by the Science and Technology Facilities Council in the UK. The research presented in this Letter has used data from the Canadian Galactic Plane Survey, a Canadian project with international partners, supported by NSERC. D.B.S. acknowledges the NASA Delaware Space Grant Program for its support of this research. J.P.H. acknowledges support from NASA grant NNX08AZ86G to Rutgers University. Facility: VERITAS

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 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 00h25m270, + 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 ± 0.43 stat ± 0.47sys) × 10-14cm -2s-1TeV-1. The integral flux above 1TeV 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.

AB - 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 00h25m270, + 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 ± 0.43 stat ± 0.47sys) × 10-14cm -2s-1TeV-1. The integral flux above 1TeV 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.

KW - gamma rays: general

UR - http://www.scopus.com/inward/record.url?scp=79953649778&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79953649778&partnerID=8YFLogxK

U2 - 10.1088/2041-8205/730/2/L20

DO - 10.1088/2041-8205/730/2/L20

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SN - 2041-8205

VL - 730

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 2 PART II

M1 - L20

ER -

Discovery of TeV gamma-ray emission from Tycho's supernova remnant

Abstract

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