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Discovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on its redshift

Here, we report the first detection of very high energy83Gamma-ray emission above 100 GeV. (VHE) gamma-ray emission above 140 GeV from PKS 1424+240, a BL Lac object with an unknown redshift. The photon spectrum above 140 GeV measured by VERITAS is well described by a power law with a photon index of... Full description

Journal Title: Astrophysical Journal Letters 18 December 2009, Vol.708(2)
Main Author: Acciari, V. A
Other Authors: Aliu, E , Arlen, T , Aune, T , Bautista, M , Beilicke, M , Benbow, W , Böttcher, M , Boltuch, D , Bradbury, S. M , Buckley, J. H , Bugaev, V , Byrum, K , Cannon, A , Cesarini, A , Chow, Y. C , Ciupik, L , Cogan, P , Cui, W , Duke, C , Falcone, A , Finley, J. P , Finnegan, G , Fortson, L , Furniss, A , Galante, N , Gall, D , Gillanders, G. H , Godambe, S , Grube, J , Guenette, R , Gyuk, G , Hanna, D , Holder, J , Hui, C. M , Humensky, T. B , Kaaret, P , Karlsson, N , Kertzman, M , Kieda, D , Konopelko, A , Krawczynski, H , Krennrich, F , Lang, M. J , Lebohec, S , Maier, G , Mcarthur, S , Mccann, A , Mccutcheon, M , Millis, J , Moriarty, P , Nagai, T , Ong, R. A , Otte, A. N , Pandel, D , Perkins, J. S , Pichel, A , Pohl, M , Quinn, J , Ragan, K , Reyes, L. C , Reynolds, P. T , Roache, E , Rose, H. J , Schroedter, M , Sembroski, G. H , Demet Senturk, G , Smith, A. W , Steele, D , Swordy, S. P , Theiling, M , Thibadeau, S , Varlotta, A , Vassiliev, V. V , Vincent, S , Wagner, R. G , Wakely, S. P , Ward, J. E , Weekes, T. C , Weinstein, A , Weisgarber, T , Williams, D. A , Wissel, S , Wood, M , Zitzer, B , Abdo, A. A , Ackermann, M , Ajello, M , Baldini, L , Ballet, J , Barbiellini, G , Bastieri, D , Baughman, B. M , Bechtol, K , Bellazzini, R , Berenji, B , Blandford, R. D , Bloom, E. D , Bonamente, E , Borgland, A. W , Bregeon, J , Brez, A , Brigida, M , Bruel, P , Burnett, T. H , Caliandro, G. A , Cameron, R. A , Caraveo, P. A , Casandjian, J. M , Cavazzuti, E , Cecchi, C , Çelik, Ö , Chekhtman, A , Cheung, C. C , Chiang, J , Ciprini, S , Claus, R , Cohen-Tanugi, J , Conrad, J , Cutini, S , Dermer, C. D , de Angelis, A , de Palma, F , Do Couto E Silva, E , Drell, P. S , Drlica-Wagner, A , Dubois, R , Dumora, D , Farnier, C , Favuzzi, C , Fegan, S. J , Focke, W. B , Fortin, P , Frailis, M , Fukazawa, Y , Fusco, P , Gargano, F , Gasparrini, D , Gehrels, N , Germani, S , Giebels, B , Giglietto, N , Giommi, P , Giordano, F , Glanzman, T , Godfrey, G , Grenier, I. A , Grove, J. E , Guillemot, L , Guiriec, S , Hanabata, Y , Hays, E , Hughes, R. E , Jackson, M. S , Jóhannesson, G , Johnson, A. S , Johnson, W. N , Kamae, T , Katagiri, H , Kataoka, J , Kawai, N , Kerr, M , Knödlseder, J , Kocian, M. L , Kuss, M , Lande, J , Latronico, L , Longo, F , Loparco, F , Lott, B , Lovellette, M. N , Lubrano, P , Madejski, G. M , Makeev, A , Mazziotta, M. N , Mcenery, J. E , Meurer, C , Michelson, P. F , Mitthumsiri, W , Mizuno, T , Moiseev, A. A , Monte, C , Monzani, M. E , Morselli, A , Moskalenko, I. V , Murgia, S , Nolan, P. L , Norris, J. P , Nuss, E , Ohsugi, T , Omodei, N , Orlando, E , Ormes, J. F , Paneque, D , Parent, D , Pelassa, V , Pepe, M , Pesce-Rollins, M , Piron, F , Porter, T. A , Rainò, S , Rando, R , Razzano, M , Reimer, A , Reimer, O , Reposeur, T , Rodriguez, A. Y , Roth, M , Ryde, F , Sadrozinski, H. F. -W , Sanchez, D , Sander, A , Saz Parkinson, P. M , Scargle, J. D , Sgrò, C , Shaw, M. S , Siskind, E. J , Smith, P. D , Spandre, G , Spinelli, P , Strickman, M. S , Suson, D. J , Tajima, H , Takahashi, H , Tanaka, T , Thayer, J. B , Thayer, J. G , Thompson, D. J , Tibaldo, L , Torres, D. F , Tosti, G , Tramacere, A , Uchiyama, Y , Usher, T. L , Vasileiou, V , Vilchez, N , Vitale, V , Waite, A. P , Wang, P , Winer, B. L , Wood, K. S , Ylinen, T , Ziegler, M , Barber, S. D , Terndrup, D. M
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 2041-8205 ; E-ISSN: 2041-8213 ; DOI: 10.1088/2041-8205/708/2/L100
Link: https://www.osti.gov/servlets/purl/1357593
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title: Discovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on its redshift
format: Article
creator:
  • Acciari, V. A
  • Aliu, E
  • Arlen, T
  • Aune, T
  • Bautista, M
  • Beilicke, M
  • Benbow, W
  • Böttcher, M
  • Boltuch, D
  • Bradbury, S. M
  • Buckley, J. H
  • Bugaev, V
  • Byrum, K
  • Cannon, A
  • Cesarini, A
  • Chow, Y. C
  • Ciupik, L
  • Cogan, P
  • Cui, W
  • Duke, C
  • Falcone, A
  • Finley, J. P
  • Finnegan, G
  • Fortson, L
  • Furniss, A
  • Galante, N
  • Gall, D
  • Gillanders, G. H
  • Godambe, S
  • Grube, J
  • Guenette, R
  • Gyuk, G
  • Hanna, D
  • Holder, J
  • Hui, C. M
  • Humensky, T. B
  • Kaaret, P
  • Karlsson, N
  • Kertzman, M
  • Kieda, D
  • Konopelko, A
  • Krawczynski, H
  • Krennrich, F
  • Lang, M. J
  • Lebohec, S
  • Maier, G
  • Mcarthur, S
  • Mccann, A
  • Mccutcheon, M
  • Millis, J
  • Moriarty, P
  • Nagai, T
  • Ong, R. A
  • Otte, A. N
  • Pandel, D
  • Perkins, J. S
  • Pichel, A
  • Pohl, M
  • Quinn, J
  • Ragan, K
  • Reyes, L. C
  • Reynolds, P. T
  • Roache, E
  • Rose, H. J
  • Schroedter, M
  • Sembroski, G. H
  • Demet Senturk, G
  • Smith, A. W
  • Steele, D
  • Swordy, S. P
  • Theiling, M
  • Thibadeau, S
  • Varlotta, A
  • Vassiliev, V. V
  • Vincent, S
  • Wagner, R. G
  • Wakely, S. P
  • Ward, J. E
  • Weekes, T. C
  • Weinstein, A
  • Weisgarber, T
  • Williams, D. A
  • Wissel, S
  • Wood, M
  • Zitzer, B
  • Abdo, A. A
  • Ackermann, M
  • Ajello, M
  • Baldini, L
  • Ballet, J
  • Barbiellini, G
  • Bastieri, D
  • Baughman, B. M
  • Bechtol, K
  • Bellazzini, R
  • Berenji, B
  • Blandford, R. D
  • Bloom, E. D
  • Bonamente, E
  • Borgland, A. W
  • Bregeon, J
  • Brez, A
  • Brigida, M
  • Bruel, P
  • Burnett, T. H
  • Caliandro, G. A
  • Cameron, R. A
  • Caraveo, P. A
  • Casandjian, J. M
  • Cavazzuti, E
  • Cecchi, C
  • Çelik, Ö
  • Chekhtman, A
  • Cheung, C. C
  • Chiang, J
  • Ciprini, S
  • Claus, R
  • Cohen-Tanugi, J
  • Conrad, J
  • Cutini, S
  • Dermer, C. D
  • de Angelis, A
  • de Palma, F
  • Do Couto E Silva, E
  • Drell, P. S
  • Drlica-Wagner, A
  • Dubois, R
  • Dumora, D
  • Farnier, C
  • Favuzzi, C
  • Fegan, S. J
  • Focke, W. B
  • Fortin, P
  • Frailis, M
  • Fukazawa, Y
  • Fusco, P
  • Gargano, F
  • Gasparrini, D
  • Gehrels, N
  • Germani, S
  • Giebels, B
  • Giglietto, N
  • Giommi, P
  • Giordano, F
  • Glanzman, T
  • Godfrey, G
  • Grenier, I. A
  • Grove, J. E
  • Guillemot, L
  • Guiriec, S
  • Hanabata, Y
  • Hays, E
  • Hughes, R. E
  • Jackson, M. S
  • Jóhannesson, G
  • Johnson, A. S
  • Johnson, W. N
  • Kamae, T
  • Katagiri, H
  • Kataoka, J
  • Kawai, N
  • Kerr, M
  • Knödlseder, J
  • Kocian, M. L
  • Kuss, M
  • Lande, J
  • Latronico, L
  • Longo, F
  • Loparco, F
  • Lott, B
  • Lovellette, M. N
  • Lubrano, P
  • Madejski, G. M
  • Makeev, A
  • Mazziotta, M. N
  • Mcenery, J. E
  • Meurer, C
  • Michelson, P. F
  • Mitthumsiri, W
  • Mizuno, T
  • Moiseev, A. A
  • Monte, C
  • Monzani, M. E
  • Morselli, A
  • Moskalenko, I. V
  • Murgia, S
  • Nolan, P. L
  • Norris, J. P
  • Nuss, E
  • Ohsugi, T
  • Omodei, N
  • Orlando, E
  • Ormes, J. F
  • Paneque, D
  • Parent, D
  • Pelassa, V
  • Pepe, M
  • Pesce-Rollins, M
  • Piron, F
  • Porter, T. A
  • Rainò, S
  • Rando, R
  • Razzano, M
  • Reimer, A
  • Reimer, O
  • Reposeur, T
  • Rodriguez, A. Y
  • Roth, M
  • Ryde, F
  • Sadrozinski, H. F. -W
  • Sanchez, D
  • Sander, A
  • Saz Parkinson, P. M
  • Scargle, J. D
  • Sgrò, C
  • Shaw, M. S
  • Siskind, E. J
  • Smith, P. D
  • Spandre, G
  • Spinelli, P
  • Strickman, M. S
  • Suson, D. J
  • Tajima, H
  • Takahashi, H
  • Tanaka, T
  • Thayer, J. B
  • Thayer, J. G
  • Thompson, D. J
  • Tibaldo, L
  • Torres, D. F
  • Tosti, G
  • Tramacere, A
  • Uchiyama, Y
  • Usher, T. L
  • Vasileiou, V
  • Vilchez, N
  • Vitale, V
  • Waite, A. P
  • Wang, P
  • Winer, B. L
  • Wood, K. S
  • Ylinen, T
  • Ziegler, M
  • Barber, S. D
  • Terndrup, D. M
subjects:
  • Astronomy And Astrophysics
  • Bl Lacertae Objects: Individual (Pks 1424+240 + Ver J1427+237), Gamma Rays: Observations
  • Astronomy & Astrophysics
ispartof: Astrophysical Journal Letters, 18 December 2009, Vol.708(2)
description: Here, we report the first detection of very high energy83Gamma-ray emission above 100 GeV. (VHE) gamma-ray emission above 140 GeV from PKS 1424+240, a BL Lac object with an unknown redshift. The photon spectrum above 140 GeV measured by VERITAS is well described by a power law with a photon index of 3.8 ± 0.5stat ± 0.3syst and a flux normalization at 200 GeV of (5.1 ± 0.9stat ± 0.5syst) × 10–11 TeV–1 cm–2 s–1, where stat and syst denote the statistical and systematical uncertainties, respectively. The VHE flux is steady over the observation period between MJD 54881 and 55003 (from 2009 February 19 to June 21). Flux variability is also not observed in contemporaneous high-energy observations with the Fermi Large Area Telescope. Contemporaneous X-ray and optical data were also obtained from the Swift XRT and MDM observatory, respectively. The broadband spectral energy distribution is well described by a one-zone synchrotron self-Compton model favoring a redshift of less than 0.1. We can conclude after using the photon index measured with Fermi in combination with recent extragalactic background light absorption models that the VERITAS data has a redshift of PKS 1424+240 less than 0.66.
language: eng
source:
identifier: ISSN: 2041-8205 ; E-ISSN: 2041-8213 ; DOI: 10.1088/2041-8205/708/2/L100
fulltext: fulltext
issn:
  • 2041-8205
  • 20418205
  • 2041-8213
  • 20418213
url: Link


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titleDiscovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on its redshift
creatorAcciari, V. A ; Aliu, E ; Arlen, T ; Aune, T ; Bautista, M ; Beilicke, M ; Benbow, W ; Böttcher, M ; Boltuch, D ; Bradbury, S. M ; Buckley, J. H ; Bugaev, V ; Byrum, K ; Cannon, A ; Cesarini, A ; Chow, Y. C ; Ciupik, L ; Cogan, P ; Cui, W ; Duke, C ; Falcone, A ; Finley, J. P ; Finnegan, G ; Fortson, L ; Furniss, A ; Galante, N ; Gall, D ; Gillanders, G. H ; Godambe, S ; Grube, J ; Guenette, R ; Gyuk, G ; Hanna, D ; Holder, J ; Hui, C. M ; Humensky, T. B ; Kaaret, P ; Karlsson, N ; Kertzman, M ; Kieda, D ; Konopelko, A ; Krawczynski, H ; Krennrich, F ; Lang, M. J ; Lebohec, S ; Maier, G ; Mcarthur, S ; Mccann, A ; Mccutcheon, M ; Millis, J ; Moriarty, P ; Nagai, T ; Ong, R. A ; Otte, A. N ; Pandel, D ; Perkins, J. S ; Pichel, A ; Pohl, M ; Quinn, J ; Ragan, K ; Reyes, L. C ; Reynolds, P. T ; Roache, E ; Rose, H. J ; Schroedter, M ; Sembroski, G. H ; Demet Senturk, G ; Smith, A. W ; Steele, D ; Swordy, S. P ; Theiling, M ; Thibadeau, S ; Varlotta, A ; Vassiliev, V. V ; Vincent, S ; Wagner, R. G ; Wakely, S. P ; Ward, J. E ; Weekes, T. C ; Weinstein, A ; Weisgarber, T ; Williams, D. A ; Wissel, S ; Wood, M ; Zitzer, B ; Abdo, A. A ; Ackermann, M ; Ajello, M ; Baldini, L ; Ballet, J ; Barbiellini, G ; Bastieri, D ; Baughman, B. M ; Bechtol, K ; Bellazzini, R ; Berenji, B ; Blandford, R. D ; Bloom, E. D ; Bonamente, E ; Borgland, A. W ; Bregeon, J ; Brez, A ; Brigida, M ; Bruel, P ; Burnett, T. H ; Caliandro, G. A ; Cameron, R. A ; Caraveo, P. A ; Casandjian, J. M ; Cavazzuti, E ; Cecchi, C ; Çelik, Ö ; Chekhtman, A ; Cheung, C. C ; Chiang, J ; Ciprini, S ; Claus, R ; Cohen-Tanugi, J ; Conrad, J ; Cutini, S ; Dermer, C. D ; de Angelis, A ; de Palma, F ; Do Couto E Silva, E ; Drell, P. S ; Drlica-Wagner, A ; Dubois, R ; Dumora, D ; Farnier, C ; Favuzzi, C ; Fegan, S. J ; Focke, W. B ; Fortin, P ; Frailis, M ; Fukazawa, Y ; Fusco, P ; Gargano, F ; Gasparrini, D ; Gehrels, N ; Germani, S ; Giebels, B ; Giglietto, N ; Giommi, P ; Giordano, F ; Glanzman, T ; Godfrey, G ; Grenier, I. A ; Grove, J. E ; Guillemot, L ; Guiriec, S ; Hanabata, Y ; Hays, E ; Hughes, R. E ; Jackson, M. S ; Jóhannesson, G ; Johnson, A. S ; Johnson, W. N ; Kamae, T ; Katagiri, H ; Kataoka, J ; Kawai, N ; Kerr, M ; Knödlseder, J ; Kocian, M. L ; Kuss, M ; Lande, J ; Latronico, L ; Longo, F ; Loparco, F ; Lott, B ; Lovellette, M. N ; Lubrano, P ; Madejski, G. M ; Makeev, A ; Mazziotta, M. N ; Mcenery, J. E ; Meurer, C ; Michelson, P. F ; Mitthumsiri, W ; Mizuno, T ; Moiseev, A. A ; Monte, C ; Monzani, M. E ; Morselli, A ; Moskalenko, I. V ; Murgia, S ; Nolan, P. L ; Norris, J. P ; Nuss, E ; Ohsugi, T ; Omodei, N ; Orlando, E ; Ormes, J. F ; Paneque, D ; Parent, D ; Pelassa, V ; Pepe, M ; Pesce-Rollins, M ; Piron, F ; Porter, T. A ; Rainò, S ; Rando, R ; Razzano, M ; Reimer, A ; Reimer, O ; Reposeur, T ; Rodriguez, A. Y ; Roth, M ; Ryde, F ; Sadrozinski, H. F. -W ; Sanchez, D ; Sander, A ; Saz Parkinson, P. M ; Scargle, J. D ; Sgrò, C ; Shaw, M. S ; Siskind, E. J ; Smith, P. D ; Spandre, G ; Spinelli, P ; Strickman, M. S ; Suson, D. J ; Tajima, H ; Takahashi, H ; Tanaka, T ; Thayer, J. B ; Thayer, J. G ; Thompson, D. J ; Tibaldo, L ; Torres, D. F ; Tosti, G ; Tramacere, A ; Uchiyama, Y ; Usher, T. L ; Vasileiou, V ; Vilchez, N ; Vitale, V ; Waite, A. P ; Wang, P ; Winer, B. L ; Wood, K. S ; Ylinen, T ; Ziegler, M ; Barber, S. D ; Terndrup, D. M
contributorSlac National Accelerator Lab., Menlo Park, Ca (United States) (Corporate Author)
ispartofAstrophysical Journal Letters, 18 December 2009, Vol.708(2)
identifier
subjectAstronomy And Astrophysics ; Bl Lacertae Objects: Individual (Pks 1424+240 + Ver J1427+237), Gamma Rays: Observations ; Astronomy & Astrophysics
descriptionHere, we report the first detection of very high energy83Gamma-ray emission above 100 GeV. (VHE) gamma-ray emission above 140 GeV from PKS 1424+240, a BL Lac object with an unknown redshift. The photon spectrum above 140 GeV measured by VERITAS is well described by a power law with a photon index of 3.8 ± 0.5stat ± 0.3syst and a flux normalization at 200 GeV of (5.1 ± 0.9stat ± 0.5syst) × 10–11 TeV–1 cm–2 s–1, where stat and syst denote the statistical and systematical uncertainties, respectively. The VHE flux is steady over the observation period between MJD 54881 and 55003 (from 2009 February 19 to June 21). Flux variability is also not observed in contemporaneous high-energy observations with the Fermi Large Area Telescope. Contemporaneous X-ray and optical data were also obtained from the Swift XRT and MDM observatory, respectively. The broadband spectral energy distribution is well described by a one-zone synchrotron self-Compton model favoring a redshift of less than 0.1. We can conclude after using the photon index measured with Fermi in combination with recent extragalactic background light absorption models that the VERITAS data has a redshift of PKS 1424+240 less than 0.66.
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0Acciari, V. A
1Aliu, E
2Arlen, T
3Aune, T
4Bautista, M
5Beilicke, M
6Benbow, W
7Böttcher, M
8Boltuch, D
9Bradbury, S. M
10Buckley, J. H
11Bugaev, V
12Byrum, K
13Cannon, A
14Cesarini, A
15Chow, Y. C
16Ciupik, L
17Cogan, P
18Cui, W
19Duke, C
20Falcone, A
21Finley, J. P
22Finnegan, G
23Fortson, L
24Furniss, A
25Galante, N
26Gall, D
27Gillanders, G. H
28Godambe, S
29Grube, J
30Guenette, R
31Gyuk, G
32Hanna, D
33Holder, J
34Hui, C. M
35Humensky, T. B
36Kaaret, P
37Karlsson, N
38Kertzman, M
39Kieda, D
40Konopelko, A
41Krawczynski, H
42Krennrich, F
43Lang, M. J
44Lebohec, S
45Maier, G
46Mcarthur, S
47Mccann, A
48Mccutcheon, M
49Millis, J
50Moriarty, P
51Nagai, T
52Ong, R. A
53Otte, A. N
54Pandel, D
55Perkins, J. S
56Pichel, A
57Pohl, M
58Quinn, J
59Ragan, K
60Reyes, L. C
61Reynolds, P. T
62Roache, E
63Rose, H. J
64Schroedter, M
65Sembroski, G. H
66Demet Senturk, G
67Smith, A. W
68Steele, D
69Swordy, S. P
70Theiling, M
71Thibadeau, S
72Varlotta, A
73Vassiliev, V. V
74Vincent, S
75Wagner, R. G
76Wakely, S. P
77Ward, J. E
78Weekes, T. C
79Weinstein, A
80Weisgarber, T
81Williams, D. A
82Wissel, S
83Wood, M
84Zitzer, B
85Abdo, A. A
86Ackermann, M
87Ajello, M
88Baldini, L
89Ballet, J
90Barbiellini, G
91Bastieri, D
92Baughman, B. M
93Bechtol, K
94Bellazzini, R
95Berenji, B
96Blandford, R. D
97Bloom, E. D
98Bonamente, E
99Borgland, A. W
100...
titleDiscovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on its redshift
description

Here, we report the first detection of very high energy83Gamma-ray emission above 100 GeV. (VHE) gamma-ray emission above 140 GeV from PKS 1424+240, a BL Lac object with an unknown redshift. The photon spectrum above 140 GeV measured by VERITAS is well described by a power law with a photon index of 3.8 ± 0.5stat ± 0.3syst and a flux normalization at 200 GeV of (5.1 ± 0.9stat ± 0.5syst) × 10–11 TeV–1 cm–2 s–1, where stat and syst denote the statistical and systematical uncertainties, respectively. The VHE flux is steady over the observation period between MJD 54881 and 55003 (from 2009 February 19 to June 21). Flux variability is also not observed in contemporaneous high-energy observations with the Fermi Large Area Telescope. Contemporaneous X-ray and optical data were also obtained from the Swift XRT and MDM observatory, respectively. The broadband spectral energy distribution is well described by a one-zone synchrotron self-Compton model favoring a redshift of less than 0.1. We can conclude after using the photon index measured with Fermi in combination with recent extragalactic background light absorption models that the VERITAS data has a redshift of PKS 1424+240 less than 0.66.

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0Astronomy And Astrophysics
1Bl Lacertae Objects: Individual (Pks 1424+240 + Ver J1427+237), Gamma Rays: Observations
2Astronomy & Astrophysics
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0English
1Institute of Physics (IOP)
210.1088/2041-8205/708/2/L100
3SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
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lsr40Astrophysical Journal Letters, 18 December 2009, Vol.708 (2)
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sort
titleDiscovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on its redshift
authorAcciari, V. A ; Aliu, E ; Arlen, T ; Aune, T ; Bautista, M ; Beilicke, M ; Benbow, W ; Böttcher, M ; Boltuch, D ; Bradbury, S. M ; Buckley, J. H ; Bugaev, V ; Byrum, K ; Cannon, A ; Cesarini, A ; Chow, Y. C ; Ciupik, L ; Cogan, P ; Cui, W ; Duke, C ; Falcone, A ; Finley, J. P ; Finnegan, G ; Fortson, L ; Furniss, A ; Galante, N ; Gall, D ; Gillanders, G. H ; Godambe, S ; Grube, J ; Guenette, R ; Gyuk, G ; Hanna, D ; Holder, J ; Hui, C. M ; Humensky, T. B ; Kaaret, P ; Karlsson, N ; Kertzman, M ; Kieda, D ; Konopelko, A ; Krawczynski, H ; Krennrich, F ; Lang, M. J ; Lebohec, S ; Maier, G ; Mcarthur, S ; Mccann, A ; Mccutcheon, M ; Millis, J ; Moriarty, P ; Nagai, T ; Ong, R. A ; Otte, A. N ; Pandel, D ; Perkins, J. S ; Pichel, A ; Pohl, M ; Quinn, J ; Ragan, K ; Reyes, L. C ; Reynolds, P. T ; Roache, E ; Rose, H. J ; Schroedter, M ; Sembroski, G. H ; Demet Senturk, G ; Smith, A. W ; Steele, D ; Swordy, S. P ; Theiling, M ; Thibadeau, S ; Varlotta, A ; Vassiliev, V. V ; Vincent, S ; Wagner, R. G ; Wakely, S. P ; Ward, J. E ; Weekes, T. C ; Weinstein, A ; Weisgarber, T ; Williams, D. A ; Wissel, S ; Wood, M ; Zitzer, B ; Abdo, A. A ; Ackermann, M ; Ajello, M ; Baldini, L ; Ballet, J ; Barbiellini, G ; Bastieri, D ; Baughman, B. M ; Bechtol, K ; Bellazzini, R ; Berenji, B ; Blandford, R. D ; Bloom, E. D ; Bonamente, E ; Borgland, A. W ; Bregeon, J ; Brez, A ; Brigida, M ; Bruel, P ; Burnett, T. H ; Caliandro, G. A ; Cameron, R. A ; Caraveo, P. A ; Casandjian, J. M ; Cavazzuti, E ; Cecchi, C ; Çelik, Ö ; Chekhtman, A ; Cheung, C. C ; Chiang, J ; Ciprini, S ; Claus, R ; Cohen-Tanugi, J ; Conrad, J ; Cutini, S ; Dermer, C. D ; de Angelis, A ; de Palma, F ; Do Couto E Silva, E ; Drell, P. S ; Drlica-Wagner, A ; Dubois, R ; Dumora, D ; Farnier, C ; Favuzzi, C ; Fegan, S. J ; Focke, W. B ; Fortin, P ; Frailis, M ; Fukazawa, Y ; Fusco, P ; Gargano, F ; Gasparrini, D ; Gehrels, N ; Germani, S ; Giebels, B ; Giglietto, N ; Giommi, P ; Giordano, F ; Glanzman, T ; Godfrey, G ; Grenier, I. A ; Grove, J. E ; Guillemot, L ; Guiriec, S ; Hanabata, Y ; Hays, E ; Hughes, R. E ; Jackson, M. S ; Jóhannesson, G ; Johnson, A. S ; Johnson, W. N ; Kamae, T ; Katagiri, H ; Kataoka, J ; Kawai, N ; Kerr, M ; Knödlseder, J ; Kocian, M. L ; Kuss, M ; Lande, J ; Latronico, L ; Longo, F ; Loparco, F ; Lott, B ; Lovellette, M. N ; Lubrano, P ; Madejski, G. M ; Makeev, A ; Mazziotta, M. N ; Mcenery, J. E ; Meurer, C ; Michelson, P. F ; Mitthumsiri, W ; Mizuno, T ; Moiseev, A. A ; Monte, C ; Monzani, M. E ; Morselli, A ; Moskalenko, I. V ; Murgia, S ; Nolan, P. L ; Norris, J. P ; Nuss, E ; Ohsugi, T ; Omodei, N ; Orlando, E ; Ormes, J. F ; Paneque, D ; Parent, D ; Pelassa, V ; Pepe, M ; Pesce-Rollins, M ; Piron, F ; Porter, T. A ; Rainò, S ; Rando, R ; Razzano, M ; Reimer, A ; Reimer, O ; Reposeur, T ; Rodriguez, A. Y ; Roth, M ; Ryde, F ; Sadrozinski, H. F. -W ; Sanchez, D ; Sander, A ; Saz Parkinson, P. M ; Scargle, J. D ; Sgrò, C ; Shaw, M. S ; Siskind, E. J ; Smith, P. D ; Spandre, G ; Spinelli, P ; Strickman, M. S ; Suson, D. J ; Tajima, H ; Takahashi, H ; Tanaka, T ; Thayer, J. B ; Thayer, J. G ; Thompson, D. J ; Tibaldo, L ; Torres, D. F ; Tosti, G ; Tramacere, A ; Uchiyama, Y ; Usher, T. L ; Vasileiou, V ; Vilchez, N ; Vitale, V ; Waite, A. P ; Wang, P ; Winer, B. L ; Wood, K. S ; Ylinen, T ; Ziegler, M ; Barber, S. D ; Terndrup, D. M
creationdate20091218
lso0120091218
facets
frbrgroupid9047641689816570127
frbrtype5
newrecords20190821
languageeng
topic
0Astronomy And Astrophysics
1Bl Lacertae Objects: Individual (Pks 1424+240 + Ver J1427+237), Gamma Rays: Observations
2Astronomy & Astrophysics
collectionSciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
prefilterarticles
rsrctypearticles
creatorcontrib
0Acciari, V. A
1Aliu, E
2Arlen, T
3Aune, T
4Bautista, M
5Beilicke, M
6Benbow, W
7Böttcher, M
8Boltuch, D
9Bradbury, S. M
10Buckley, J. H
11Bugaev, V
12Byrum, K
13Cannon, A
14Cesarini, A
15Chow, Y. C
16Ciupik, L
17Cogan, P
18Cui, W
19Duke, C
20Falcone, A
21Finley, J. P
22Finnegan, G
23Fortson, L
24Furniss, A
25Galante, N
26Gall, D
27Gillanders, G. H
28Godambe, S
29Grube, J
30Guenette, R
31Gyuk, G
32Hanna, D
33Holder, J
34Hui, C. M
35Humensky, T. B
36Kaaret, P
37Karlsson, N
38Kertzman, M
39Kieda, D
40Konopelko, A
41Krawczynski, H
42Krennrich, F
43Lang, M. J
44Lebohec, S
45Maier, G
46Mcarthur, S
47Mccann, A
48Mccutcheon, M
49Millis, J
50Moriarty, P
51Nagai, T
52Ong, R. A
53Otte, A. N
54Pandel, D
55Perkins, J. S
56Pichel, A
57Pohl, M
58Quinn, J
59Ragan, K
60Reyes, L. C
61Reynolds, P. T
62Roache, E
63Rose, H. J
64Schroedter, M
65Sembroski, G. H
66Demet Senturk, G
67Smith, A. W
68Steele, D
69Swordy, S. P
70Theiling, M
71Thibadeau, S
72Varlotta, A
73Vassiliev, V. V
74Vincent, S
75Wagner, R. G
76Wakely, S. P
77Ward, J. E
78Weekes, T. C
79Weinstein, A
80Weisgarber, T
81Williams, D. A
82Wissel, S
83Wood, M
84Zitzer, B
85Abdo, A. A
86Ackermann, M
87Ajello, M
88Baldini, L
89Ballet, J
90Barbiellini, G
91Bastieri, D
92Baughman, B. M
93Bechtol, K
94Bellazzini, R
95Berenji, B
96Blandford, R. D
97Bloom, E. D
98Bonamente, E
99Borgland, A. W
100...
jtitleAstrophysical Journal Letters
creationdate2009
toplevelpeer_reviewed
delivery
delcategoryRemote Search Resource
fulltextfulltext
addata
aulast
0Acciari
1Aliu
2Arlen
3Aune
4Bautista
5Beilicke
6Benbow
7Böttcher
8Boltuch
9Bradbury
10Buckley
11Bugaev
12Byrum
13Cannon
14Cesarini
15Chow
16Ciupik
17Cogan
18Cui
19Duke
20Falcone
21Finley
22Finnegan
23Fortson
24Furniss
25Galante
26Gall
27Gillanders
28Godambe
29Grube
30Guenette
31Gyuk
32Hanna
33Holder
34Hui
35Humensky
36Kaaret
37Karlsson
38Kertzman
39Kieda
40Konopelko
41Krawczynski
42Krennrich
43Lang
44Lebohec
45Maier
46Mcarthur
47Mccann
48Mccutcheon
49Millis
50Moriarty
51Nagai
52Ong
53Otte
54Pandel
55Perkins
56Pichel
57Pohl
58Quinn
59Ragan
60Reyes
61Reynolds
62Roache
63Rose
64Schroedter
65Sembroski
66Demet Senturk
67Smith
68Steele
69Swordy
70Theiling
71Thibadeau
72Varlotta
73Vassiliev
74Vincent
75Wagner
76Wakely
77Ward
78Weekes
79Weinstein
80Weisgarber
81Williams
82Wissel
83Wood
84Zitzer
85Abdo
86Ackermann
87Ajello
88Baldini
89Ballet
90Barbiellini
91Bastieri
92Baughman
93Bechtol
94Bellazzini
95Berenji
96Blandford
97Bloom
98Bonamente
99Borgland
100...
aufirst
0V. A
1E
2T
3M
4W
5D
6S. M
7J. H
8V
9K
10A
11Y. C
12L
13P
14C
15J. P
16G
17N
18G. H
19S
20J
21R
22C. M
23T. B
24H
25F
26M. J
27R. A
28A. N
29J. S
30L. C
31P. T
32H. J
33A. W
34S. P
35V. V
36R. G
37J. E
38T. C
39D. A
40B
41A. A
42B. M
43R. D
44E. D
45T. H
46G. A
47P. A
48J. M
49Ö
50C. C
51C. D
52P. S
53S. J
54W. B
55Y
56I. A
57R. E
58M. S
59A. S
60W. N
61M. L
62M. N
63G. M
64P. F
65M. E
66I. V
67P. L
68J. F
69T. A
70O
71A. Y
72H. F. -W
73P. M
74J. D
75E. J
76P. D
77D. J
78J. B
79J. G
80D. F
81T. L
82A. P
83B. L
84K. S
85S. D
86D. M
87Menlo Park, Ca
auinitV
auinit1V
au
0Acciari, V. A
1Aliu, E
2Arlen, T
3Aune, T
4Bautista, M
5Beilicke, M
6Benbow, W
7Böttcher, M
8Boltuch, D
9Bradbury, S. M
10Buckley, J. H
11Bugaev, V
12Byrum, K
13Cannon, A
14Cesarini, A
15Chow, Y. C
16Ciupik, L
17Cogan, P
18Cui, W
19Duke, C
20Falcone, A
21Finley, J. P
22Finnegan, G
23Fortson, L
24Furniss, A
25Galante, N
26Gall, D
27Gillanders, G. H
28Godambe, S
29Grube, J
30Guenette, R
31Gyuk, G
32Hanna, D
33Holder, J
34Hui, C. M
35Humensky, T. B
36Kaaret, P
37Karlsson, N
38Kertzman, M
39Kieda, D
40Konopelko, A
41Krawczynski, H
42Krennrich, F
43Lang, M. J
44Lebohec, S
45Maier, G
46Mcarthur, S
47Mccann, A
48Mccutcheon, M
49Millis, J
50Moriarty, P
51Nagai, T
52Ong, R. A
53Otte, A. N
54Pandel, D
55Perkins, J. S
56Pichel, A
57Pohl, M
58Quinn, J
59Ragan, K
60Reyes, L. C
61Reynolds, P. T
62Roache, E
63Rose, H. J
64Schroedter, M
65Sembroski, G. H
66Demet Senturk, G
67Smith, A. W
68Steele, D
69Swordy, S. P
70Theiling, M
71Thibadeau, S
72Varlotta, A
73Vassiliev, V. V
74Vincent, S
75Wagner, R. G
76Wakely, S. P
77Ward, J. E
78Weekes, T. C
79Weinstein, A
80Weisgarber, T
81Williams, D. A
82Wissel, S
83Wood, M
84Zitzer, B
85Abdo, A. A
86Ackermann, M
87Ajello, M
88Baldini, L
89Ballet, J
90Barbiellini, G
91Bastieri, D
92Baughman, B. M
93Bechtol, K
94Bellazzini, R
95Berenji, B
96Blandford, R. D
97Bloom, E. D
98Bonamente, E
99Borgland, A. W
100...
addauSlac National Accelerator Lab., Menlo Park, Ca
atitleDiscovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on its redshift
jtitleAstrophysical Journal Letters
risdate20091218
volume708
issue2
issn2041-8205
eissn2041-8213
formatjournal
genrearticle
ristypeJOUR
abstract

Here, we report the first detection of very high energy83Gamma-ray emission above 100 GeV. (VHE) gamma-ray emission above 140 GeV from PKS 1424+240, a BL Lac object with an unknown redshift. The photon spectrum above 140 GeV measured by VERITAS is well described by a power law with a photon index of 3.8 ± 0.5stat ± 0.3syst and a flux normalization at 200 GeV of (5.1 ± 0.9stat ± 0.5syst) × 10–11 TeV–1 cm–2 s–1, where stat and syst denote the statistical and systematical uncertainties, respectively. The VHE flux is steady over the observation period between MJD 54881 and 55003 (from 2009 February 19 to June 21). Flux variability is also not observed in contemporaneous high-energy observations with the Fermi Large Area Telescope. Contemporaneous X-ray and optical data were also obtained from the Swift XRT and MDM observatory, respectively. The broadband spectral energy distribution is well described by a one-zone synchrotron self-Compton model favoring a redshift of less than 0.1. We can conclude after using the photon index measured with Fermi in combination with recent extragalactic background light absorption models that the VERITAS data has a redshift of PKS 1424+240 less than 0.66.

copUnited States
pubInstitute of Physics (IOP)
doi10.1088/2041-8205/708/2/L100
oafree_for_read
pagesL100-L106
orcidid0000-0002-0014-7809: 0000-0001-6885-7156
date2009-12-18