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 & 63 others 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, Mallory 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

    Research output: Contribution to journalArticle

    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 languageEnglish (US)
    Article number78
    JournalAstrophysical Journal
    Volume788
    Issue number1
    DOIs
    StatePublished - Jun 10 2014

    Fingerprint

    power law
    energy
    star formation
    photons
    supernova remnants
    observatory
    shell
    radio
    point sources
    energy bands
    observatories
    x rays
    index

    Keywords

    • gamma rays: stars
    • supernovae: individual (CTB 87)

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    Aliu, E., Aune, T., Behera, B., Beilicke, M., Benbow, W., Berger, K., ... Zitzer, B. (2014). Spatially resolving the very high energy emission from MGRO J2019+37 with veritas. Astrophysical Journal, 788(1), [78]. https://doi.org/10.1088/0004-637X/788/1/78

    Spatially resolving the very high energy emission from MGRO J2019+37 with veritas. / 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.; Federici, S.; Feng, Q.; Finley, J. P.; Fleischhack, H.; Fortin, P.; Fortson, L.; Furniss, A.; Galante, N.; Gillanders, G. H.; Gotthelf, E. V.; Griffin, S.; Griffiths, S. T.; Grube, J.; Gyuk, G.; Hanna, D.; Holder, J.; Hughes, G.; Humensky, T. B.; Johnson, C. A.; Kaaret, P.; Kargaltsev, O.; Kertzman, M.; Khassen, Y.; Kieda, D.; Krennrich, F.; Lang, M. J.; Madhavan, A. S.; Maier, G.; McArthur, S.; McCann, A.; Millis, J.; Moriarty, P.; Mukherjee, R.; Nieto, D.; O'Faoláin De Bhróithe, A.; Ong, R. A.; Otte, A. N.; Pandel, D.; Park, N.; Pohl, M.; Popkow, A.; Prokoph, H.; Quinn, J.; Ragan, K.; Rajotte, J.; Reyes, L. C.; Reynolds, P. T.; Richards, G. T.; Roache, E.; Roberts, Mallory; Sembroski, G. H.; Shahinyan, K.; Smith, A. W.; Staszak, D.; Telezhinsky, I.; Tucci, J. V.; Tyler, J.; Vincent, S.; Wakely, S. P.; Weinstein, A.; Welsing, R.; Wilhelm, A.; Williams, D. A.; Zitzer, B.

    In: Astrophysical Journal, Vol. 788, No. 1, 78, 10.06.2014.

    Research output: Contribution to journalArticle

    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
    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. ; Federici, S. ; Feng, Q. ; Finley, J. P. ; Fleischhack, H. ; Fortin, P. ; Fortson, L. ; Furniss, A. ; Galante, N. ; Gillanders, G. H. ; Gotthelf, E. V. ; Griffin, S. ; Griffiths, S. T. ; Grube, J. ; Gyuk, G. ; Hanna, D. ; Holder, J. ; Hughes, G. ; Humensky, T. B. ; Johnson, C. A. ; Kaaret, P. ; Kargaltsev, O. ; Kertzman, M. ; Khassen, Y. ; Kieda, D. ; Krennrich, F. ; Lang, M. J. ; Madhavan, A. S. ; Maier, G. ; McArthur, S. ; McCann, A. ; Millis, J. ; Moriarty, P. ; Mukherjee, R. ; Nieto, D. ; O'Faoláin De Bhróithe, A. ; Ong, R. A. ; Otte, A. N. ; Pandel, D. ; Park, N. ; Pohl, M. ; Popkow, A. ; Prokoph, H. ; Quinn, J. ; Ragan, K. ; Rajotte, J. ; Reyes, L. C. ; Reynolds, P. T. ; Richards, G. T. ; Roache, E. ; Roberts, Mallory ; Sembroski, G. H. ; Shahinyan, K. ; Smith, A. W. ; Staszak, D. ; Telezhinsky, I. ; Tucci, J. V. ; Tyler, J. ; Vincent, S. ; Wakely, S. P. ; Weinstein, A. ; Welsing, R. ; Wilhelm, A. ; Williams, D. A. ; Zitzer, B. / Spatially resolving the very high energy emission from MGRO J2019+37 with veritas. In: Astrophysical Journal. 2014 ; Vol. 788, No. 1.
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    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.",
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    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, Mallory

    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.

    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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