Discovery of very high energy gamma rays from 1ES 1440+122

S. Archambault; A. Archer; A. Barnacka; B. Behera; M. Beilicke; W. Benbow; K. Berger; R. Bird; M. Böttcher; J. H. Buckley; V. Bugaev; J. V. Cardenzana; M. Cerruti; X. Chen; J. L. Christiansen; L. Ciupik; E. Collins-Hughes; M. P. Connolly; W. Cui; H. J. Dickinson; J. Dumm; J. D. Eisch; M. Errando; A. Falcone; S. Federici; Q. Feng; J. P. Finley; H. Fleischhack; L. Fortson; A. Furniss; G. H. Gillanders; S. Godambe; S. Griffin; S. T. Griffiths; J. Grube; G. Gyuk; N. Håkansson; D. Hanna; J. Holder; G. Hughes; C. A. Johnson; P. Kaaret; P. Kar; M. Kertzman; Y. Khassen; D. Kieda; H. Krawczynski; S. Kumar; M. J. Lang; A. S Madhavan; G. Maier; S. McArthur; A. McCann; K. Meagher; J. Millis; P. Moriarty; T. Nelson; D. Nieto; A. O'Faoláin de Bhróithe; R. A. Ong; A. N. Otte; N. Park; J. S. Perkins; M. Pohl; A. Popkow; H. Prokoph; E. Pueschel; J. Quinn; K. Ragan; J. Rajotte; L. C. Reyes; P. T. Reynolds; G. T. Richards; E. Roache; G. H. Sembroski; K. Shahinyan; A. W. Smith; D. Staszak; K. Sweeney; I. Telezhinsky; J. V. Tucci; J. Tyler; A. Varlotta; V. V. Vassiliev; S. P. Wakely; R. Welsing; A. Wilhelm; D. A. Williams; B. Zitzer

doi:10.1093/mnras/stw1319

Discovery of very high energy gamma rays from 1ES 1440+122

S. Archambault, A. Archer, A. Barnacka, B. Behera, M. Beilicke, W. Benbow, K. Berger, R. Bird, M. Böttcher, J. H. Buckley, V. Bugaev, J. V. Cardenzana, M. Cerruti, X. Chen, J. L. Christiansen, L. Ciupik, E. Collins-Hughes, M. P. Connolly, W. Cui, H. J. DickinsonJ. Dumm, J. D. Eisch, M. Errando, A. Falcone, S. Federici, Q. Feng, J. P. Finley, H. Fleischhack, L. Fortson, A. Furniss, G. H. Gillanders, S. Godambe, S. Griffin, S. T. Griffiths, J. Grube, G. Gyuk, N. Håkansson, D. Hanna, J. Holder, G. Hughes, C. A. Johnson, P. Kaaret, P. Kar, M. Kertzman, Y. Khassen, D. Kieda, H. Krawczynski, S. Kumar, M. J. Lang, A. S Madhavan, G. Maier, S. McArthur, A. McCann, K. Meagher, J. Millis, P. Moriarty, T. Nelson, D. Nieto, A. O'Faoláin de Bhróithe, R. A. Ong, A. N. Otte, N. Park, J. S. Perkins, M. Pohl, A. Popkow, H. Prokoph, E. Pueschel, J. Quinn, K. Ragan, J. Rajotte, L. C. Reyes, P. T. Reynolds, G. T. Richards, E. Roache, G. H. Sembroski, K. Shahinyan, A. W. Smith, D. Staszak, K. Sweeney, I. Telezhinsky, J. V. Tucci, J. Tyler, A. Varlotta, V. V. Vassiliev, S. P. Wakely, R. Welsing, A. Wilhelm, D. A. Williams, B. Zitzer

Physics and Astronomy (Twin Cities)

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Abstract

The BL Lacertae object 1ES 1440+122 was observed in the energy range from 85 GeV to 30 TeV by the VERITAS array of imaging atmospheric Cherenkov telescopes. The observations, taken between 2008 May and 2010 June and totalling 53 h, resulted in the discovery of γ -ray emission from the blazar, which has a redshift z = 0.163. 1ES 1440+122 is detected at a statistical significance of 5.5 standard deviations above the background with an integral flux of (2.8 ± 0.7_stat ± 0.8_sys) × 10^-12 cm^-2 s^-1 (1.2 per cent of the Crab Nebula's flux) above 200 GeV. The measured spectrum is described well by a power law from 0.2 to 1.3 TeV with a photon index of 3.1 ± 0.4_stat ± 0.2_sys. Quasi-simultaneous multiwavelength data from the Fermi Large Area Telescope (0.3-300 GeV) and the Swift X-ray Telescope (0.2-10 keV) are additionally used to model the properties of the emission region. A synchrotron self-Compton model produces a good representation of the multiwavelength data. Adding an external-Compton or a hadronic component also adequately describes the data.

Original language	English (US)
Pages (from-to)	202-208
Number of pages	7
Journal	Monthly Notices of the Royal Astronomical Society
Volume	461
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stw1319
State	Published - Sep 1 2016

Bibliographical note

Publisher Copyright:
© 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.

Keywords

BL Lacertae objects: general
Gamma-rays: general

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Archambault, S., Archer, A., Barnacka, A., Behera, B., Beilicke, M., Benbow, W., Berger, K., Bird, R., Böttcher, M., Buckley, J. H., Bugaev, V., Cardenzana, J. V., Cerruti, M., Chen, X., Christiansen, J. L., Ciupik, L., Collins-Hughes, E., Connolly, M. P., Cui, W., ... Zitzer, B. (2016). Discovery of very high energy gamma rays from 1ES 1440+122. Monthly Notices of the Royal Astronomical Society, 461(1), 202-208. https://doi.org/10.1093/mnras/stw1319

Archambault, S, Archer, A, Barnacka, A, Behera, B, Beilicke, M, Benbow, W, Berger, K, Bird, R, Böttcher, M, Buckley, JH, Bugaev, V, Cardenzana, JV, Cerruti, M, Chen, X, Christiansen, JL, Ciupik, L, Collins-Hughes, E, Connolly, MP, Cui, W, Dickinson, HJ, Dumm, J, Eisch, JD, Errando, M, Falcone, A, Federici, S, Feng, Q, Finley, JP, Fleischhack, H, Fortson, L, Furniss, A, Gillanders, GH, Godambe, S, Griffin, S, Griffiths, ST, Grube, J, Gyuk, G, Håkansson, N, Hanna, D, Holder, J, Hughes, G, Johnson, CA, Kaaret, P, Kar, P, Kertzman, M, Khassen, Y, Kieda, D, Krawczynski, H, Kumar, S, Lang, MJ, S Madhavan, A, Maier, G, McArthur, S, McCann, A, Meagher, K, Millis, J, Moriarty, P, Nelson, T, Nieto, D, O'Faoláin de Bhróithe, A, Ong, RA, Otte, AN, Park, N, Perkins, JS, Pohl, M, Popkow, A, Prokoph, H, Pueschel, E, Quinn, J, Ragan, K, Rajotte, J, Reyes, LC, Reynolds, PT, Richards, GT, Roache, E, Sembroski, GH, Shahinyan, K, Smith, AW, Staszak, D, Sweeney, K, Telezhinsky, I, Tucci, JV, Tyler, J, Varlotta, A, Vassiliev, VV, Wakely, SP, Welsing, R, Wilhelm, A, Williams, DA & Zitzer, B 2016, 'Discovery of very high energy gamma rays from 1ES 1440+122', Monthly Notices of the Royal Astronomical Society, vol. 461, no. 1, pp. 202-208. https://doi.org/10.1093/mnras/stw1319

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title = "Discovery of very high energy gamma rays from 1ES 1440+122",

abstract = "The BL Lacertae object 1ES 1440+122 was observed in the energy range from 85 GeV to 30 TeV by the VERITAS array of imaging atmospheric Cherenkov telescopes. The observations, taken between 2008 May and 2010 June and totalling 53 h, resulted in the discovery of γ -ray emission from the blazar, which has a redshift z = 0.163. 1ES 1440+122 is detected at a statistical significance of 5.5 standard deviations above the background with an integral flux of (2.8 ± 0.7stat ± 0.8sys) × 10-12 cm-2 s-1 (1.2 per cent of the Crab Nebula's flux) above 200 GeV. The measured spectrum is described well by a power law from 0.2 to 1.3 TeV with a photon index of 3.1 ± 0.4stat ± 0.2sys. Quasi-simultaneous multiwavelength data from the Fermi Large Area Telescope (0.3-300 GeV) and the Swift X-ray Telescope (0.2-10 keV) are additionally used to model the properties of the emission region. A synchrotron self-Compton model produces a good representation of the multiwavelength data. Adding an external-Compton or a hadronic component also adequately describes the data.",

keywords = "BL Lacertae objects: general, Gamma-rays: general",

author = "S. Archambault and A. Archer and A. Barnacka and B. Behera and M. Beilicke and W. Benbow and K. Berger and R. Bird and M. B{\"o}ttcher and Buckley, {J. H.} and V. Bugaev and Cardenzana, {J. V.} and M. Cerruti and X. Chen and Christiansen, {J. L.} and L. Ciupik and E. Collins-Hughes and Connolly, {M. P.} and W. Cui and Dickinson, {H. J.} and J. Dumm and Eisch, {J. D.} and M. Errando and A. Falcone and S. Federici and Q. Feng and Finley, {J. P.} and H. Fleischhack and L. Fortson and A. Furniss and Gillanders, {G. H.} and S. Godambe and S. Griffin and Griffiths, {S. T.} and J. Grube and G. Gyuk and N. H{\aa}kansson and D. Hanna and J. Holder and G. Hughes and Johnson, {C. A.} and P. Kaaret and P. Kar and M. Kertzman and Y. Khassen and D. Kieda and H. Krawczynski and S. Kumar and Lang, {M. J.} and {S Madhavan}, A. and G. Maier and S. McArthur and A. McCann and K. Meagher and J. Millis and P. Moriarty and T. Nelson and D. Nieto and {O'Faol{\'a}in de Bhr{\'o}ithe}, A. and Ong, {R. A.} and Otte, {A. N.} and N. Park and Perkins, {J. S.} and M. Pohl and A. Popkow and H. Prokoph and E. Pueschel 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 Sembroski, {G. H.} and K. Shahinyan and Smith, {A. W.} and D. Staszak and K. Sweeney and I. Telezhinsky and Tucci, {J. V.} and J. Tyler and A. Varlotta and Vassiliev, {V. V.} and Wakely, {S. P.} and R. Welsing and A. Wilhelm and Williams, {D. A.} and B. Zitzer",

note = "Publisher Copyright: {\textcopyright} 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.",

year = "2016",

month = sep,

day = "1",

doi = "10.1093/mnras/stw1319",

language = "English (US)",

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journal = "Monthly Notices of the Royal Astronomical Society",

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TY - JOUR

T1 - Discovery of very high energy gamma rays from 1ES 1440+122

AU - Archambault, S.

AU - Archer, A.

AU - Barnacka, A.

AU - Behera, B.

AU - Beilicke, M.

AU - Benbow, W.

AU - Berger, K.

AU - Bird, R.

AU - Böttcher, M.

AU - Buckley, J. H.

AU - Bugaev, V.

AU - Cardenzana, J. V.

AU - Cerruti, M.

AU - Chen, X.

AU - Christiansen, J. L.

AU - Ciupik, L.

AU - Collins-Hughes, E.

AU - Connolly, M. P.

AU - Cui, W.

AU - Dickinson, H. J.

AU - Dumm, J.

AU - Eisch, J. D.

AU - Errando, M.

AU - Falcone, A.

AU - Federici, S.

AU - Feng, Q.

AU - Finley, J. P.

AU - Fleischhack, H.

AU - Fortson, L.

AU - Furniss, A.

AU - Gillanders, G. H.

AU - Godambe, S.

AU - Griffin, S.

AU - Griffiths, S. T.

AU - Grube, J.

AU - Gyuk, G.

AU - Håkansson, N.

AU - Hanna, D.

AU - Holder, J.

AU - Hughes, G.

AU - Johnson, C. A.

AU - Kaaret, P.

AU - Kar, P.

AU - Kertzman, M.

AU - Khassen, Y.

AU - Kieda, D.

AU - Krawczynski, H.

AU - Kumar, S.

AU - Lang, M. J.

AU - S Madhavan, A.

AU - Maier, G.

AU - McArthur, S.

AU - McCann, A.

AU - Meagher, K.

AU - Millis, J.

AU - Moriarty, P.

AU - Nelson, T.

AU - Nieto, D.

AU - O'Faoláin de Bhróithe, A.

AU - Ong, R. A.

AU - Otte, A. N.

AU - Park, N.

AU - Perkins, J. S.

AU - Pohl, M.

AU - Popkow, A.

AU - Prokoph, H.

AU - Pueschel, E.

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 - Sembroski, G. H.

AU - Shahinyan, K.

AU - Smith, A. W.

AU - Staszak, D.

AU - Sweeney, K.

AU - Telezhinsky, I.

AU - Tucci, J. V.

AU - Tyler, J.

AU - Varlotta, A.

AU - Vassiliev, V. V.

AU - Wakely, S. P.

AU - Welsing, R.

AU - Wilhelm, A.

AU - Williams, D. A.

AU - Zitzer, B.

PY - 2016/9/1

Y1 - 2016/9/1

N2 - The BL Lacertae object 1ES 1440+122 was observed in the energy range from 85 GeV to 30 TeV by the VERITAS array of imaging atmospheric Cherenkov telescopes. The observations, taken between 2008 May and 2010 June and totalling 53 h, resulted in the discovery of γ -ray emission from the blazar, which has a redshift z = 0.163. 1ES 1440+122 is detected at a statistical significance of 5.5 standard deviations above the background with an integral flux of (2.8 ± 0.7stat ± 0.8sys) × 10-12 cm-2 s-1 (1.2 per cent of the Crab Nebula's flux) above 200 GeV. The measured spectrum is described well by a power law from 0.2 to 1.3 TeV with a photon index of 3.1 ± 0.4stat ± 0.2sys. Quasi-simultaneous multiwavelength data from the Fermi Large Area Telescope (0.3-300 GeV) and the Swift X-ray Telescope (0.2-10 keV) are additionally used to model the properties of the emission region. A synchrotron self-Compton model produces a good representation of the multiwavelength data. Adding an external-Compton or a hadronic component also adequately describes the data.

AB - The BL Lacertae object 1ES 1440+122 was observed in the energy range from 85 GeV to 30 TeV by the VERITAS array of imaging atmospheric Cherenkov telescopes. The observations, taken between 2008 May and 2010 June and totalling 53 h, resulted in the discovery of γ -ray emission from the blazar, which has a redshift z = 0.163. 1ES 1440+122 is detected at a statistical significance of 5.5 standard deviations above the background with an integral flux of (2.8 ± 0.7stat ± 0.8sys) × 10-12 cm-2 s-1 (1.2 per cent of the Crab Nebula's flux) above 200 GeV. The measured spectrum is described well by a power law from 0.2 to 1.3 TeV with a photon index of 3.1 ± 0.4stat ± 0.2sys. Quasi-simultaneous multiwavelength data from the Fermi Large Area Telescope (0.3-300 GeV) and the Swift X-ray Telescope (0.2-10 keV) are additionally used to model the properties of the emission region. A synchrotron self-Compton model produces a good representation of the multiwavelength data. Adding an external-Compton or a hadronic component also adequately describes the data.

KW - BL Lacertae objects: general

KW - Gamma-rays: general

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U2 - 10.1093/mnras/stw1319

DO - 10.1093/mnras/stw1319

M3 - Article

AN - SCOPUS:84988810612

SN - 0035-8711

VL - 461

SP - 202

EP - 208

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

Discovery of very high energy gamma rays from 1ES 1440+122

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