TEV GAMMA-RAY OBSERVATIONS of the GALACTIC CENTER RIDGE by VERITAS

A. Archer; W. Benbow; R. Bird; M. Buchovecky; J. H. Buckley; V. Bugaev; K. Byrum; J. V. Cardenzana; M. Cerruti; X. Chen; L. Ciupik; E. Collins-Hughes; M. P. Connolly; J. D. Eisch; A. Falcone; Q. Feng; J. P. Finley; H. Fleischhack; A. Flinders; L. Fortson; A. Furniss; G. H. Gillanders; S. Griffin; J. Grube; G. Gyuk; N. Hakansson; D. Hanna; J. Holder; T. B. Humensky; M. Hütten; C. A. Johnson; P. Kaaret; P. Kar; N. Kelley-Hoskins; M. Kertzman; D. Kieda; M. Krause; F. Krennrich; S. Kumar; M. J. Lang; S. McArthur; A. McCann; K. Meagher; J. Millis; P. Moriarty; R. Mukherjee; D. Nieto; R. A. Ong; N. Park; V. Pelassa; M. Pohl; A. Popkow; E. Pueschel; J. Quinn; K. Ragan; G. Ratliff; P. T. Reynolds; G. T. Richards; E. Roache; J. Rousselle; M. Santander; G. H. Sembroski; K. Shahinyan; A. W. Smith; D. Staszak; I. Telezhinsky; J. V. Tucci; J. Tyler; V. V. Vassiliev; S. P. Wakely; O. M. Weiner; A. Weinstein; A. Wilhelm; D. A. Williams; B. Zitzer; F. Yusef-Zadeh

doi:10.3847/0004-637X/821/2/129

TEV GAMMA-RAY OBSERVATIONS of the GALACTIC CENTER RIDGE by VERITAS

A. Archer, W. Benbow, R. Bird, M. Buchovecky, J. H. Buckley, V. Bugaev, K. Byrum, J. V. Cardenzana, M. Cerruti, X. Chen, L. Ciupik, E. Collins-Hughes, M. P. Connolly, J. D. Eisch, A. Falcone, Q. Feng, J. P. Finley, H. Fleischhack, A. Flinders, L. FortsonA. Furniss, G. H. Gillanders, S. Griffin, J. Grube, G. Gyuk, N. Hakansson, D. Hanna, J. Holder, T. B. Humensky, M. Hütten, C. A. Johnson, P. Kaaret, P. Kar, N. Kelley-Hoskins, M. Kertzman, D. Kieda, M. Krause, F. Krennrich, S. Kumar, M. J. Lang, S. McArthur, A. McCann, K. Meagher, J. Millis, P. Moriarty, R. Mukherjee, D. Nieto, R. A. Ong, N. Park, V. Pelassa, M. Pohl, A. Popkow, E. Pueschel, J. Quinn, K. Ragan, G. Ratliff, P. T. Reynolds, G. T. Richards, E. Roache, J. Rousselle, M. Santander, G. H. Sembroski, K. Shahinyan, A. W. Smith, D. Staszak, I. Telezhinsky, J. V. Tucci, J. Tyler, V. V. Vassiliev, S. P. Wakely, O. M. Weiner, A. Weinstein, A. Wilhelm, D. A. Williams, B. Zitzer, F. Yusef-Zadeh

Physics

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Abstract

The Galactic Center ridge has been observed extensively in the past by both GeV and TeV gamma-ray instruments revealing a wealth of structure, including a diffuse component and the point sources G0.9+0.1 (a composite supernova remnant) and Sgr A∗ (believed to be associated with the supermassive black hole located at the center of our Galaxy). Previous very high energy (VHE) gamma-ray observations with the H.E.S.S. experiment have also detected an extended TeV gamma-ray component along the Galactic plane in the >300 GeV gamma-ray regime. Here we report on observations of the Galactic Center ridge from 2010 to 2014 by the VERITAS telescope array in the >2 TeV energy range. From these observations we (1) provide improved measurements of the differential energy spectrum for Sgr A∗ in the >2 TeV gamma-ray regime, (2) provide a detection in the >2 TeV gamma-ray emission from the composite SNR G0.9+0.1 and an improved determination of its multi-TeV gamma-ray energy spectrum, and (3) report on the detection of VER J1746-289, a localized enhancement of >2 TeV gamma-ray emission along the Galactic plane.

Original language	English
Article number	129
Journal	Astrophysical Journal
Volume	821
Issue number	2
DOIs	https://doi.org/10.3847/0004-637X/821/2/129
Publication status	Published - 20 Apr 2016

Keywords

Galaxy: center
gamma rays: general
supernovae: individual (G0.9+0.1)

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

Authors
Archer, A,Benbow, W,Bird, R,Buchovecky, M,Buckley, JH,Bugaev, V,Byrum, K,Cardenzana, JV,Cerruti, M,Chen, X,Ciupik, L,Collins-Hughes, E,Connolly, MP,Eisch, JD,Falcone, A,Feng, Q,Finley, JP,Fleischhack, H,Flinders, A,Fortson, L,Furniss, A,Gillanders, GH,Griffin, S,Grube, J,Gyuk, G,Hakansson, N,Hanna, D,Holder, J,Humensky, TB,Hutten, M,Johnson, CA,Kaaret, P,Kar, P,Kelley-Hoskins, N,Kertzman, M,Kieda, D,Krause, M,Krennrich, F,Kumar, S,Lang, MJ,McArthur, S,McCann, A,Meagher, K,Millis, J,Moriarty, P,Mukherjee, R,Nieto, D,Ong, RA,Park, N,Pelassa, V,Pohl, M,Popkow, A,Pueschel, E,Quinn, J,Ragan, K,Ratliff, G,Reynolds, PT,Richards, GT,Roache, E,Rousselle, J,Santander, M,Sembroski, GH,Shahinyan, K,Smith, AW,Staszak, D,Telezhinsky, I,Tucci, JV,Tyler, J,Vassiliev, VV,Wakely, SP,Weiner, OM,Weinstein, A

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Archer, A., Benbow, W., Bird, R., Buchovecky, M., Buckley, J. H., Bugaev, V., Byrum, K., Cardenzana, J. V., Cerruti, M., Chen, X., Ciupik, L., Collins-Hughes, E., Connolly, M. P., Eisch, J. D., Falcone, A., Feng, Q., Finley, J. P., Fleischhack, H., Flinders, A., ... Yusef-Zadeh, F. (2016). TEV GAMMA-RAY OBSERVATIONS of the GALACTIC CENTER RIDGE by VERITAS. Astrophysical Journal, 821(2), Article 129. https://doi.org/10.3847/0004-637X/821/2/129

@article{9599b20d38ac4ac685faac78f4b4754c,

title = "TEV GAMMA-RAY OBSERVATIONS of the GALACTIC CENTER RIDGE by VERITAS",

abstract = "The Galactic Center ridge has been observed extensively in the past by both GeV and TeV gamma-ray instruments revealing a wealth of structure, including a diffuse component and the point sources G0.9+0.1 (a composite supernova remnant) and Sgr A∗ (believed to be associated with the supermassive black hole located at the center of our Galaxy). Previous very high energy (VHE) gamma-ray observations with the H.E.S.S. experiment have also detected an extended TeV gamma-ray component along the Galactic plane in the >300 GeV gamma-ray regime. Here we report on observations of the Galactic Center ridge from 2010 to 2014 by the VERITAS telescope array in the >2 TeV energy range. From these observations we (1) provide improved measurements of the differential energy spectrum for Sgr A∗ in the >2 TeV gamma-ray regime, (2) provide a detection in the >2 TeV gamma-ray emission from the composite SNR G0.9+0.1 and an improved determination of its multi-TeV gamma-ray energy spectrum, and (3) report on the detection of VER J1746-289, a localized enhancement of >2 TeV gamma-ray emission along the Galactic plane.",

keywords = "Galaxy: center, gamma rays: general, supernovae: individual (G0.9+0.1)",

author = "A. Archer and W. Benbow and R. Bird and M. Buchovecky and Buckley, \{J. H.\} and V. Bugaev and K. Byrum and Cardenzana, \{J. V.\} and M. Cerruti and X. Chen and L. Ciupik and E. Collins-Hughes and Connolly, \{M. P.\} and Eisch, \{J. D.\} and A. Falcone and Q. Feng and Finley, \{J. P.\} and H. Fleischhack and A. Flinders and L. Fortson and A. Furniss and Gillanders, \{G. H.\} and S. Griffin and J. Grube and G. Gyuk and N. Hakansson and D. Hanna and J. Holder and Humensky, \{T. B.\} and M. H{\"u}tten and Johnson, \{C. A.\} and P. Kaaret and P. Kar and N. Kelley-Hoskins and M. Kertzman and D. Kieda and M. Krause and F. Krennrich and S. Kumar and Lang, \{M. J.\} and S. McArthur and A. McCann and K. Meagher and J. Millis and P. Moriarty and R. Mukherjee and D. Nieto and Ong, \{R. A.\} and N. Park and V. Pelassa and M. Pohl and A. Popkow and E. Pueschel and J. Quinn and K. Ragan and G. Ratliff and Reynolds, \{P. T.\} and Richards, \{G. T.\} and E. Roache and J. Rousselle and M. Santander and Sembroski, \{G. H.\} and K. Shahinyan and Smith, \{A. W.\} and D. Staszak and I. Telezhinsky and Tucci, \{J. V.\} and J. Tyler and Vassiliev, \{V. V.\} and Wakely, \{S. P.\} and Weiner, \{O. M.\} and A. Weinstein and A. Wilhelm and Williams, \{D. A.\} and B. Zitzer and F. Yusef-Zadeh",

year = "2016",

month = apr,

day = "20",

doi = "10.3847/0004-637X/821/2/129",

language = "English",

volume = "821",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Archer, A, Benbow, W, Bird, R, Buchovecky, M, Buckley, JH, Bugaev, V, Byrum, K, Cardenzana, JV, Cerruti, M, Chen, X, Ciupik, L, Collins-Hughes, E, Connolly, MP, Eisch, JD, Falcone, A, Feng, Q, Finley, JP, Fleischhack, H, Flinders, A, Fortson, L, Furniss, A, Gillanders, GH, Griffin, S, Grube, J, Gyuk, G, Hakansson, N, Hanna, D, Holder, J, Humensky, TB, Hütten, M, Johnson, CA, Kaaret, P, Kar, P, Kelley-Hoskins, N, Kertzman, M, Kieda, D, Krause, M, Krennrich, F, Kumar, S, Lang, MJ, McArthur, S, McCann, A, Meagher, K, Millis, J, Moriarty, P, Mukherjee, R, Nieto, D, Ong, RA, Park, N, Pelassa, V, Pohl, M, Popkow, A, Pueschel, E, Quinn, J, Ragan, K, Ratliff, G, Reynolds, PT, Richards, GT, Roache, E, Rousselle, J, Santander, M, Sembroski, GH, Shahinyan, K, Smith, AW, Staszak, D, Telezhinsky, I, Tucci, JV, Tyler, J, Vassiliev, VV, Wakely, SP, Weiner, OM, Weinstein, A, Wilhelm, A, Williams, DA, Zitzer, B & Yusef-Zadeh, F 2016, 'TEV GAMMA-RAY OBSERVATIONS of the GALACTIC CENTER RIDGE by VERITAS', Astrophysical Journal, vol. 821, no. 2, 129. https://doi.org/10.3847/0004-637X/821/2/129

TY - JOUR

T1 - TEV GAMMA-RAY OBSERVATIONS of the GALACTIC CENTER RIDGE by VERITAS

AU - Archer, A.

AU - Benbow, W.

AU - Bird, R.

AU - Buchovecky, M.

AU - Buckley, J. H.

AU - Bugaev, V.

AU - Byrum, K.

AU - Cardenzana, J. V.

AU - Cerruti, M.

AU - Chen, X.

AU - Ciupik, L.

AU - Collins-Hughes, E.

AU - Connolly, M. P.

AU - Eisch, J. D.

AU - Falcone, A.

AU - Feng, Q.

AU - Finley, J. P.

AU - Fleischhack, H.

AU - Flinders, A.

AU - Fortson, L.

AU - Furniss, A.

AU - Gillanders, G. H.

AU - Griffin, S.

AU - Grube, J.

AU - Gyuk, G.

AU - Hakansson, N.

AU - Hanna, D.

AU - Holder, J.

AU - Humensky, T. B.

AU - Hütten, M.

AU - Johnson, C. A.

AU - Kaaret, P.

AU - Kar, P.

AU - Kelley-Hoskins, N.

AU - Kertzman, M.

AU - Kieda, D.

AU - Krause, M.

AU - Krennrich, F.

AU - Kumar, S.

AU - Lang, M. J.

AU - McArthur, S.

AU - McCann, A.

AU - Meagher, K.

AU - Millis, J.

AU - Moriarty, P.

AU - Mukherjee, R.

AU - Nieto, D.

AU - Ong, R. A.

AU - Park, N.

AU - Pelassa, V.

AU - Pohl, M.

AU - Popkow, A.

AU - Pueschel, E.

AU - Quinn, J.

AU - Ragan, K.

AU - Ratliff, G.

AU - Reynolds, P. T.

AU - Richards, G. T.

AU - Roache, E.

AU - Rousselle, J.

AU - Santander, M.

AU - Sembroski, G. H.

AU - Shahinyan, K.

AU - Smith, A. W.

AU - Staszak, D.

AU - Telezhinsky, I.

AU - Tucci, J. V.

AU - Tyler, J.

AU - Vassiliev, V. V.

AU - Wakely, S. P.

AU - Weiner, O. M.

AU - Weinstein, A.

AU - Wilhelm, A.

AU - Williams, D. A.

AU - Zitzer, B.

AU - Yusef-Zadeh, F.

PY - 2016/4/20

Y1 - 2016/4/20

N2 - The Galactic Center ridge has been observed extensively in the past by both GeV and TeV gamma-ray instruments revealing a wealth of structure, including a diffuse component and the point sources G0.9+0.1 (a composite supernova remnant) and Sgr A∗ (believed to be associated with the supermassive black hole located at the center of our Galaxy). Previous very high energy (VHE) gamma-ray observations with the H.E.S.S. experiment have also detected an extended TeV gamma-ray component along the Galactic plane in the >300 GeV gamma-ray regime. Here we report on observations of the Galactic Center ridge from 2010 to 2014 by the VERITAS telescope array in the >2 TeV energy range. From these observations we (1) provide improved measurements of the differential energy spectrum for Sgr A∗ in the >2 TeV gamma-ray regime, (2) provide a detection in the >2 TeV gamma-ray emission from the composite SNR G0.9+0.1 and an improved determination of its multi-TeV gamma-ray energy spectrum, and (3) report on the detection of VER J1746-289, a localized enhancement of >2 TeV gamma-ray emission along the Galactic plane.

AB - The Galactic Center ridge has been observed extensively in the past by both GeV and TeV gamma-ray instruments revealing a wealth of structure, including a diffuse component and the point sources G0.9+0.1 (a composite supernova remnant) and Sgr A∗ (believed to be associated with the supermassive black hole located at the center of our Galaxy). Previous very high energy (VHE) gamma-ray observations with the H.E.S.S. experiment have also detected an extended TeV gamma-ray component along the Galactic plane in the >300 GeV gamma-ray regime. Here we report on observations of the Galactic Center ridge from 2010 to 2014 by the VERITAS telescope array in the >2 TeV energy range. From these observations we (1) provide improved measurements of the differential energy spectrum for Sgr A∗ in the >2 TeV gamma-ray regime, (2) provide a detection in the >2 TeV gamma-ray emission from the composite SNR G0.9+0.1 and an improved determination of its multi-TeV gamma-ray energy spectrum, and (3) report on the detection of VER J1746-289, a localized enhancement of >2 TeV gamma-ray emission along the Galactic plane.

KW - Galaxy: center

KW - gamma rays: general

KW - supernovae: individual (G0.9+0.1)

UR - https://www.scopus.com/pages/publications/84969981508

U2 - 10.3847/0004-637X/821/2/129

DO - 10.3847/0004-637X/821/2/129

M3 - Article

SN - 0004-637X

VL - 821

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 129

ER -

TEV GAMMA-RAY OBSERVATIONS of the GALACTIC CENTER RIDGE by VERITAS

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