Spatially resolving the very high energy emission from MGRO J2019+37 with veritas

E. Aliu; T. Aune; B. Behera; M. Beilicke; W. Benbow; K. Berger; R. Bird; A. Bouvier; J. H. Buckley; V. Bugaev; M. Cerruti; X. Chen; L. Ciupik; M. P. Connolly; W. Cui; J. Dumm; V. V. Dwarkadas; M. Errando; A. Falcone; S. Federici; Q. Feng; J. P. Finley; H. Fleischhack; P. Fortin; L. Fortson; A. Furniss; N. Galante; G. H. Gillanders; E. V. Gotthelf; S. Griffin; S. T. Griffiths; J. Grube; G. Gyuk; D. Hanna; J. Holder; G. Hughes; T. B. Humensky; C. A. Johnson; P. Kaaret; O. Kargaltsev; M. Kertzman; Y. Khassen; D. Kieda; F. Krennrich; M. J. Lang; A. S. Madhavan; G. Maier; S. McArthur; A. McCann; J. Millis; P. Moriarty; R. Mukherjee; D. Nieto; A. O'Faoláin De Bhróithe; R. A. Ong; A. N. Otte; D. Pandel; N. Park; M. Pohl; A. Popkow; H. Prokoph; J. Quinn; K. Ragan; J. Rajotte; L. C. Reyes; P. T. Reynolds; G. T. Richards; E. Roache; M. Roberts; G. H. Sembroski; K. Shahinyan; A. W. Smith; D. Staszak; I. Telezhinsky; J. V. Tucci; J. Tyler; S. Vincent; S. P. Wakely; A. Weinstein; R. Welsing; A. Wilhelm; D. A. Williams; B. Zitzer

doi:10.1088/0004-637X/788/1/78

Spatially resolving the very high energy emission from MGRO J2019+37 with veritas

E. Aliu, T. Aune, B. Behera, M. Beilicke, W. Benbow, K. Berger, R. Bird, A. Bouvier, J. H. Buckley, V. Bugaev, M. Cerruti, X. Chen, L. Ciupik, M. P. Connolly, W. Cui, J. Dumm, V. V. Dwarkadas, M. Errando, A. Falcone, S. FedericiQ. Feng, J. P. Finley, H. Fleischhack, P. Fortin, L. Fortson, A. Furniss, N. Galante, G. H. Gillanders, E. V. Gotthelf, S. Griffin, S. T. Griffiths, J. Grube, G. Gyuk, D. Hanna, J. Holder, G. Hughes, T. B. Humensky, C. A. Johnson, P. Kaaret, O. Kargaltsev, M. Kertzman, Y. Khassen, D. Kieda, F. Krennrich, M. J. Lang, A. S. Madhavan, G. Maier, S. McArthur, A. McCann, J. Millis, P. Moriarty, R. Mukherjee, D. Nieto, A. O'Faoláin De Bhróithe, R. A. Ong, A. N. Otte, D. Pandel, N. Park, M. Pohl, A. Popkow, H. Prokoph, J. Quinn, K. Ragan, J. Rajotte, L. C. Reyes, P. T. Reynolds, G. T. Richards, E. Roache, M. Roberts, G. H. Sembroski, K. Shahinyan, A. W. Smith, D. Staszak, I. Telezhinsky, J. V. Tucci, J. Tyler, S. Vincent, S. P. Wakely, A. Weinstein, R. Welsing, A. Wilhelm, D. A. Williams, B. Zitzer

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We present very high energy (VHE) imaging of MGRO J2019+37 obtained with the VERITAS observatory. The bright extended (∼2°) unidentified Milagro source is located toward the rich star formation region Cygnus-X. MGRO J2019+37 is resolved into two VERITAS sources. The faint, point-like source VER J2016+371 overlaps CTB 87, a filled-center remnant (SNR) with no evidence of a supernova remnant shell at the present time. Its spectrum is well fit in the 0.65-10 TeV energy range by a power-law model with photon index 2.3 ± 0.4. VER J2019+378 is a bright extended (∼1°) source that likely accounts for the bulk of the Milagro emission and is notably coincident with PSR J2021+3651 and the star formation region Sh 2-104. Its spectrum in the range 1-30 TeV is well fit with a power-law model of photon index 1.75 ± 0.3, among the hardest values measured in the VHE band, comparable to that observed near Vela-X. We explore the unusual spectrum and morphology in the radio and X-ray bands to constrain possible emission mechanisms for this source.

Original language	English (US)
Article number	78
Journal	Astrophysical Journal
Volume	788
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/788/1/78
State	Published - Jun 10 2014

Keywords

gamma rays: stars
supernovae: individual (CTB 87)

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-637X/788/1/78

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Aliu, E., Aune, T., Behera, B., Beilicke, M., Benbow, W., Berger, K., Bird, R., Bouvier, A., Buckley, J. H., Bugaev, V., Cerruti, M., Chen, X., Ciupik, L., Connolly, M. P., Cui, W., Dumm, J., Dwarkadas, V. V., Errando, M., Falcone, A., ... Zitzer, B. (2014). Spatially resolving the very high energy emission from MGRO J2019+37 with veritas. Astrophysical Journal, 788(1), Article 78. https://doi.org/10.1088/0004-637X/788/1/78

Aliu, E, Aune, T, Behera, B, Beilicke, M, Benbow, W, Berger, K, Bird, R, Bouvier, A, Buckley, JH, Bugaev, V, Cerruti, M, Chen, X, Ciupik, L, Connolly, MP, Cui, W, Dumm, J, Dwarkadas, VV, Errando, M, Falcone, A, Federici, S, Feng, Q, Finley, JP, Fleischhack, H, Fortin, P, Fortson, L, Furniss, A, Galante, N, Gillanders, GH, Gotthelf, EV, Griffin, S, Griffiths, ST, Grube, J, Gyuk, G, Hanna, D, Holder, J, Hughes, G, Humensky, TB, Johnson, CA, Kaaret, P, Kargaltsev, O, Kertzman, M, Khassen, Y, Kieda, D, Krennrich, F, Lang, MJ, Madhavan, AS, Maier, G, McArthur, S, McCann, A, Millis, J, Moriarty, P, Mukherjee, R, Nieto, D, O'Faoláin De Bhróithe, A, Ong, RA, Otte, AN, Pandel, D, Park, N, Pohl, M, Popkow, A, Prokoph, H, Quinn, J, Ragan, K, Rajotte, J, Reyes, LC, Reynolds, PT, Richards, GT, Roache, E, Roberts, M, Sembroski, GH, Shahinyan, K, Smith, AW, Staszak, D, Telezhinsky, I, Tucci, JV, Tyler, J, Vincent, S, Wakely, SP, Weinstein, A, Welsing, R, Wilhelm, A, Williams, DA & Zitzer, B 2014, 'Spatially resolving the very high energy emission from MGRO J2019+37 with veritas', Astrophysical Journal, vol. 788, no. 1, 78. https://doi.org/10.1088/0004-637X/788/1/78

@article{2423e87cdf574d2cbb657f1a75903c40,

title = "Spatially resolving the very high energy emission from MGRO J2019+37 with veritas",

abstract = "We present very high energy (VHE) imaging of MGRO J2019+37 obtained with the VERITAS observatory. The bright extended (∼2°) unidentified Milagro source is located toward the rich star formation region Cygnus-X. MGRO J2019+37 is resolved into two VERITAS sources. The faint, point-like source VER J2016+371 overlaps CTB 87, a filled-center remnant (SNR) with no evidence of a supernova remnant shell at the present time. Its spectrum is well fit in the 0.65-10 TeV energy range by a power-law model with photon index 2.3 ± 0.4. VER J2019+378 is a bright extended (∼1°) source that likely accounts for the bulk of the Milagro emission and is notably coincident with PSR J2021+3651 and the star formation region Sh 2-104. Its spectrum in the range 1-30 TeV is well fit with a power-law model of photon index 1.75 ± 0.3, among the hardest values measured in the VHE band, comparable to that observed near Vela-X. We explore the unusual spectrum and morphology in the radio and X-ray bands to constrain possible emission mechanisms for this source.",

keywords = "gamma rays: stars, supernovae: individual (CTB 87)",

author = "E. Aliu and T. Aune and B. Behera and M. Beilicke and W. Benbow and K. Berger and R. Bird and A. Bouvier and Buckley, {J. H.} and V. Bugaev and M. Cerruti and X. Chen and L. Ciupik and Connolly, {M. P.} and W. Cui and J. Dumm and Dwarkadas, {V. V.} and M. Errando and A. Falcone and S. Federici and Q. Feng and Finley, {J. P.} and H. Fleischhack and P. Fortin and L. Fortson and A. Furniss and N. Galante and Gillanders, {G. H.} and Gotthelf, {E. V.} and S. Griffin and Griffiths, {S. T.} and J. Grube and G. Gyuk and D. Hanna and J. Holder and G. Hughes and Humensky, {T. B.} and Johnson, {C. A.} and P. Kaaret and O. Kargaltsev and M. Kertzman and Y. Khassen and D. Kieda and F. Krennrich and Lang, {M. J.} and Madhavan, {A. S.} and G. Maier and S. McArthur and A. McCann and J. Millis and P. Moriarty and R. Mukherjee and D. Nieto and {O'Faol{\'a}in De Bhr{\'o}ithe}, A. and Ong, {R. A.} and Otte, {A. N.} and D. Pandel and N. Park and M. Pohl and A. Popkow and H. Prokoph and J. Quinn and K. Ragan and J. Rajotte and Reyes, {L. C.} and Reynolds, {P. T.} and Richards, {G. T.} and E. Roache and M. Roberts 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 S. Vincent and Wakely, {S. P.} and A. Weinstein and R. Welsing and A. Wilhelm and Williams, {D. A.} and B. Zitzer",

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",

year = "2014",

month = jun,

day = "10",

doi = "10.1088/0004-637X/788/1/78",

language = "English (US)",

volume = "788",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1",

}

TY - JOUR

T1 - Spatially resolving the very high energy emission from MGRO J2019+37 with veritas

AU - Aliu, E.

AU - Aune, T.

AU - Behera, B.

AU - Beilicke, M.

AU - Benbow, W.

AU - Berger, K.

AU - Bird, R.

AU - Bouvier, A.

AU - Buckley, J. H.

AU - Bugaev, V.

AU - Cerruti, M.

AU - Chen, X.

AU - Ciupik, L.

AU - Connolly, M. P.

AU - Cui, W.

AU - Dumm, J.

AU - Dwarkadas, V. V.

AU - Errando, M.

AU - Falcone, A.

AU - Federici, S.

AU - Feng, Q.

AU - Finley, J. P.

AU - Fleischhack, H.

AU - Fortin, P.

AU - Fortson, L.

AU - Furniss, A.

AU - Galante, N.

AU - Gillanders, G. H.

AU - Gotthelf, E. V.

AU - Griffin, S.

AU - Griffiths, S. T.

AU - Grube, J.

AU - Gyuk, G.

AU - Hanna, D.

AU - Holder, J.

AU - Hughes, G.

AU - Humensky, T. B.

AU - Johnson, C. A.

AU - Kaaret, P.

AU - Kargaltsev, O.

AU - Kertzman, M.

AU - Khassen, Y.

AU - Kieda, D.

AU - Krennrich, F.

AU - Lang, M. J.

AU - Madhavan, A. S.

AU - Maier, G.

AU - McArthur, S.

AU - McCann, A.

AU - Millis, J.

AU - Moriarty, P.

AU - Mukherjee, R.

AU - Nieto, D.

AU - O'Faoláin De Bhróithe, A.

AU - Ong, R. A.

AU - Otte, A. N.

AU - Pandel, D.

AU - Park, N.

AU - Pohl, M.

AU - Popkow, A.

AU - Prokoph, H.

AU - Quinn, J.

AU - Ragan, K.

AU - Rajotte, J.

AU - Reyes, L. C.

AU - Reynolds, P. T.

AU - Richards, G. T.

AU - Roache, E.

AU - Roberts, 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 - Vincent, S.

AU - Wakely, S. P.

AU - Weinstein, A.

AU - Welsing, R.

AU - Wilhelm, A.

AU - Williams, D. A.

AU - Zitzer, B.

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 - 2014/6/10

Y1 - 2014/6/10

N2 - We present very high energy (VHE) imaging of MGRO J2019+37 obtained with the VERITAS observatory. The bright extended (∼2°) unidentified Milagro source is located toward the rich star formation region Cygnus-X. MGRO J2019+37 is resolved into two VERITAS sources. The faint, point-like source VER J2016+371 overlaps CTB 87, a filled-center remnant (SNR) with no evidence of a supernova remnant shell at the present time. Its spectrum is well fit in the 0.65-10 TeV energy range by a power-law model with photon index 2.3 ± 0.4. VER J2019+378 is a bright extended (∼1°) source that likely accounts for the bulk of the Milagro emission and is notably coincident with PSR J2021+3651 and the star formation region Sh 2-104. Its spectrum in the range 1-30 TeV is well fit with a power-law model of photon index 1.75 ± 0.3, among the hardest values measured in the VHE band, comparable to that observed near Vela-X. We explore the unusual spectrum and morphology in the radio and X-ray bands to constrain possible emission mechanisms for this source.

AB - We present very high energy (VHE) imaging of MGRO J2019+37 obtained with the VERITAS observatory. The bright extended (∼2°) unidentified Milagro source is located toward the rich star formation region Cygnus-X. MGRO J2019+37 is resolved into two VERITAS sources. The faint, point-like source VER J2016+371 overlaps CTB 87, a filled-center remnant (SNR) with no evidence of a supernova remnant shell at the present time. Its spectrum is well fit in the 0.65-10 TeV energy range by a power-law model with photon index 2.3 ± 0.4. VER J2019+378 is a bright extended (∼1°) source that likely accounts for the bulk of the Milagro emission and is notably coincident with PSR J2021+3651 and the star formation region Sh 2-104. Its spectrum in the range 1-30 TeV is well fit with a power-law model of photon index 1.75 ± 0.3, among the hardest values measured in the VHE band, comparable to that observed near Vela-X. We explore the unusual spectrum and morphology in the radio and X-ray bands to constrain possible emission mechanisms for this source.

KW - gamma rays: stars

KW - supernovae: individual (CTB 87)

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UR - http://www.scopus.com/inward/citedby.url?scp=84901768150&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/788/1/78

DO - 10.1088/0004-637X/788/1/78

M3 - Article

AN - SCOPUS:84901768150

SN - 0004-637X

VL - 788

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 78

ER -

Spatially resolving the very high energy emission from MGRO J2019+37 with veritas

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