Deep broadband observations of the distant gamma-ray blazar pks 1424+240
dc.contributor.author | Archambault, S. | |
dc.contributor.author | Aune, T. | |
dc.contributor.author | Behera, B. | |
dc.contributor.author | Beilicke, M. | |
dc.contributor.author | Benbow, W. | |
dc.contributor.author | Berger, K. | |
dc.contributor.author | Bird, R. | |
dc.contributor.author | Biteau, J. | |
dc.contributor.author | Bugaev, V. | |
dc.contributor.author | Byrum, K. | |
dc.contributor.author | Cardenzana, J. V | |
dc.contributor.author | Cerruti, M. | |
dc.contributor.author | Chen, X. | |
dc.contributor.author | Ciupik, L. | |
dc.contributor.author | Connolly, M. P. | |
dc.contributor.author | Cui, W. | |
dc.contributor.author | Dumm, J. | |
dc.contributor.author | Errando, M. | |
dc.contributor.author | Falcone, A. | |
dc.contributor.author | Federici, S. | |
dc.contributor.author | Feng, Q. | |
dc.contributor.author | Finley, J. P. | |
dc.contributor.author | Fleischhack, H. | |
dc.contributor.author | Fortson, L. | |
dc.contributor.author | Furniss, A. | |
dc.contributor.author | Galante, N. | |
dc.contributor.author | Gillanders, G. H. | |
dc.contributor.author | Griffin, S. | |
dc.contributor.author | Griffiths, S. T. | |
dc.contributor.author | Grube, J. | |
dc.contributor.author | Gyuk, G. | |
dc.contributor.author | Hanna, D. | |
dc.contributor.author | Holder, J. | |
dc.contributor.author | Hughes, G. | |
dc.contributor.author | Humensky, T. B. | |
dc.contributor.author | Johnson, C. A. | |
dc.contributor.author | Kaaret, P. | |
dc.contributor.author | Kertzman, M. | |
dc.contributor.author | Khassen, Y. | |
dc.contributor.author | Kieda, D. | |
dc.contributor.author | Krawczynski, H. | |
dc.contributor.author | Krennrich, F. | |
dc.contributor.author | Kumar, S. | |
dc.contributor.author | Lang, M. J. | |
dc.contributor.author | Madhavan, A. S | |
dc.contributor.author | Maier, G. | |
dc.contributor.author | McCann, A. | |
dc.contributor.author | Meagher, K. | |
dc.contributor.author | Moriarty, P. | |
dc.contributor.author | Mukherjee, R. | |
dc.contributor.author | Nieto, D. | |
dc.contributor.author | de Bhróithe, A. O'Faoláin | |
dc.contributor.author | Ong, R. A. | |
dc.contributor.author | Otte, A. N. | |
dc.contributor.author | Park, N. | |
dc.contributor.author | Pohl, M. | |
dc.contributor.author | Popkow, A. | |
dc.contributor.author | Prokoph, H. | |
dc.contributor.author | Quinn, J. | |
dc.contributor.author | Ragan, K. | |
dc.contributor.author | Rajotte, J. | |
dc.contributor.author | Reyes, L. C. | |
dc.contributor.author | Reynolds, P. T. | |
dc.contributor.author | Richards, G. T. | |
dc.contributor.author | Roache, E. | |
dc.contributor.author | Sembroski, G. H. | |
dc.contributor.author | Shahinyan, K. | |
dc.contributor.author | Staszak, D. | |
dc.contributor.author | Telezhinsky, I. | |
dc.contributor.author | Tucci, J. V. | |
dc.contributor.author | Tyler, J. | |
dc.contributor.author | Varlotta, A. | |
dc.contributor.author | Vassiliev, V. V. | |
dc.contributor.author | Vincent, S. | |
dc.contributor.author | Wakely, S. P. | |
dc.contributor.author | Weinstein, A. | |
dc.contributor.author | Welsing, R. | |
dc.contributor.author | Wilhelm, A. | |
dc.contributor.author | Williams, D. A. | |
dc.contributor.author | Ackermann, M. | |
dc.contributor.author | Ajello, M. | |
dc.contributor.author | Albert, A. | |
dc.contributor.author | Baldini, L. | |
dc.contributor.author | Bastieri, D. | |
dc.contributor.author | Bellazzini, R. | |
dc.contributor.author | Bissaldi, E. | |
dc.contributor.author | Bregeon, J. | |
dc.contributor.author | Buehler, R. | |
dc.contributor.author | Buson, S. | |
dc.contributor.author | Caliandro, G. A. | |
dc.contributor.author | Cameron, R. A. | |
dc.contributor.author | Caraveo, P. A. | |
dc.contributor.author | Cavazzuti, E. | |
dc.contributor.author | Charles, E. | |
dc.contributor.author | Chiang, J. | |
dc.contributor.author | Ciprini, S. | |
dc.contributor.author | Claus, R. | |
dc.contributor.author | Cutini, S. | |
dc.contributor.author | D'Ammando, F. | |
dc.contributor.author | de Angelis, A. | |
dc.contributor.author | de Palma, F. | |
dc.contributor.author | Dermer, C. D. | |
dc.contributor.author | Digel, S. W. | |
dc.contributor.author | Di Venere, L. | |
dc.contributor.author | Drell, P. S. | |
dc.contributor.author | Favuzzi, C. | |
dc.contributor.author | Franckowiak, A. | |
dc.contributor.author | Fusco, P. | |
dc.contributor.author | Gargano, F. | |
dc.contributor.author | Gasparrini, D. | |
dc.contributor.author | Giglietto, N. | |
dc.contributor.author | Giordano, F. | |
dc.contributor.author | Giroletti, M. | |
dc.contributor.author | Grenier, I. A. | |
dc.contributor.author | Guiriec, S. | |
dc.contributor.author | Jogler, T. | |
dc.contributor.author | Kuss, M. | |
dc.contributor.author | Larsson, S. | |
dc.contributor.author | Latronico, L. | |
dc.contributor.author | Longo, F. | |
dc.contributor.author | Loparco, F. | |
dc.contributor.author | Lubrano, P. | |
dc.contributor.author | Madejski, G. M. | |
dc.contributor.author | Mayer, M. | |
dc.contributor.author | Mazziotta, M. N. | |
dc.contributor.author | Michelson, P. F. | |
dc.contributor.author | Mizuno, T. | |
dc.contributor.author | Monzani, M. E. | |
dc.contributor.author | Morselli, A. | |
dc.contributor.author | Murgia, S. | |
dc.contributor.author | Nuss, E. | |
dc.contributor.author | Ohsugi, T. | |
dc.contributor.author | Ormes, J. F. | |
dc.contributor.author | Paneque, D. | |
dc.contributor.author | Perkins, J. S. | |
dc.contributor.author | Piron, F. | |
dc.contributor.author | Pivato, G. | |
dc.contributor.author | Rainò, S. | |
dc.contributor.author | Razzano, M. | |
dc.contributor.author | Reimer, A. | |
dc.contributor.author | Reimer, O. | |
dc.contributor.author | Ritz, S. | |
dc.contributor.author | Schaal, M. | |
dc.contributor.author | Sgrò, C. | |
dc.contributor.author | Siskind, E. J. | |
dc.contributor.author | Spinelli, P. | |
dc.contributor.author | Takahashi, H. | |
dc.contributor.author | Tibaldo, L. | |
dc.contributor.author | Tinivella, M. | |
dc.contributor.author | Troja, E. | |
dc.contributor.author | Vianello, G. | |
dc.contributor.author | Werner, M. | |
dc.contributor.author | Wood, M. | |
dc.contributor.author | , | |
dc.contributor.author | , | |
dc.date.accessioned | 2018-09-20T16:00:04Z | |
dc.date.available | 2018-09-20T16:00:04Z | |
dc.date.issued | 2014-03-28 | |
dc.identifier.citation | Archambault, S. Aune, T.; Behera, B.; Beilicke, M.; Benbow, W.; Berger, K.; Bird, R.; Biteau, J.; Bugaev, V.; Byrum, K.; Cardenzana, J. V; Cerruti, M.; Chen, X.; Ciupik, L.; Connolly, M. P.; Cui, W.; Dumm, J.; Errando, M.; Falcone, A.; Federici, S.; Feng, Q.; Finley, J. P.; Fleischhack, H.; Fortson, L.; Furniss, A.; Galante, N.; Gillanders, G. H.; Griffin, S.; Griffiths, S. T.; Grube, J.; Gyuk, G.; Hanna, D.; Holder, J.; Hughes, G.; Humensky, T. B.; Johnson, C. A.; Kaaret, P.; Kertzman, M.; Khassen, Y.; Kieda, D.; Krawczynski, H.; Krennrich, F.; Kumar, S.; Lang, M. J.; Madhavan, A. S; Maier, G.; McCann, A.; Meagher, K.; Moriarty, P.; Mukherjee, R.; Nieto, D.; de Bhróithe, A. O'Faoláin; Ong, R. A.; Otte, A. N.; 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.; Sembroski, G. H.; Shahinyan, K.; Staszak, D.; Telezhinsky, I.; Tucci, J. V.; Tyler, J.; Varlotta, A.; Vassiliev, V. V.; Vincent, S.; Wakely, S. P.; Weinstein, A.; Welsing, R.; Wilhelm, A.; Williams, D. A.; Ackermann, M.; Ajello, M.; Albert, A.; Baldini, L.; Bastieri, D.; Bellazzini, R.; Bissaldi, E.; Bregeon, J.; Buehler, R.; Buson, S.; Caliandro, G. A.; Cameron, R. A.; Caraveo, P. A.; Cavazzuti, E.; Charles, E.; Chiang, J.; Ciprini, S.; Claus, R.; Cutini, S.; D'Ammando, F.; de Angelis, A.; de Palma, F.; Dermer, C. D.; Digel, S. W.; Di Venere, L.; Drell, P. S.; Favuzzi, C.; Franckowiak, A.; Fusco, P.; Gargano, F.; Gasparrini, D.; Giglietto, N.; Giordano, F.; Giroletti, M.; Grenier, I. A.; Guiriec, S.; Jogler, T.; Kuss, M.; Larsson, S.; Latronico, L.; Longo, F.; Loparco, F.; Lubrano, P.; Madejski, G. M.; Mayer, M.; Mazziotta, M. N.; Michelson, P. F.; Mizuno, T.; Monzani, M. E.; Morselli, A.; Murgia, S.; Nuss, E.; Ohsugi, T.; Ormes, J. F.; Paneque, D.; Perkins, J. S.; Piron, F.; Pivato, G.; Rainò, S.; Razzano, M.; Reimer, A.; Reimer, O.; Ritz, S.; Schaal, M.; Sgrò, C.; Siskind, E. J.; Spinelli, P.; Takahashi, H.; Tibaldo, L.; Tinivella, M.; Troja, E.; Vianello, G.; Werner, M.; Wood, M.; , ; , (2014). Deep broadband observations of the distant gamma-ray blazar pks 1424+240. The Astrophysical Journal 785 (1), | |
dc.identifier.issn | 2041-8205,2041-8213 | |
dc.identifier.uri | http://hdl.handle.net/10379/10286 | |
dc.description.abstract | We present deep VERITAS observations of the blazar PKS 1424+240, along with contemporaneous Fermi Large Area Telescope, Swift X-ray Telescope, and Swift UV Optical Telescope data between 2009 February 19 and 2013 June 8. This blazar resides at a redshift of z >= 0.6035, displaying a significantly attenuated gamma-ray flux above 100 GeV due to photon absorption via pair-production with the extragalactic background light. We present more than 100 hr of VERITAS observations over three years, a multiwavelength light curve, and the contemporaneous spectral energy distributions. The source shows a higher flux of (2.1 +/- 0.3) x 10(-7) photons m(-2) s(-1) above 120 GeV in 2009 and 2011 as compared to the flux measured in 2013, corresponding to (1.02 +/- 0.08) x 10-7 photons m(-2) s(-1) above 120 GeV. The measured differential very high energy (VHE; E >= 100 GeV) spectral indices are Gamma = 3.8 +/- 0.3, 4.3 +/- 0.6 and 4.5 +/- 0.2 in 2009, 2011, and 2013, respectively. No significant spectral change across the observation epochs is detected. We find no evidence for variability at gamma-ray opacities of greater than tau = 2, where it is postulated that any variability would be small and occur on timescales longer than a year if hadronic cosmic-ray interactions with extragalactic photon fields provide a secondary VHE photon flux. The data cannot rule out such variability due to low statistics. | |
dc.publisher | IOP Publishing | |
dc.relation.ispartof | The Astrophysical Journal | |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Ireland | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ | |
dc.subject | bl lacertae objects: individual (pks 1424+240)-cosmic background radiation | |
dc.subject | gamma rays: galaxies | |
dc.subject | extragalactic background light | |
dc.subject | space-telescope mission | |
dc.subject | large-area telescope | |
dc.subject | energy cosmic-ray | |
dc.subject | tev blazars | |
dc.subject | spectra | |
dc.subject | redshift | |
dc.subject | absorption | |
dc.subject | radiation | |
dc.subject | universe | |
dc.title | Deep broadband observations of the distant gamma-ray blazar pks 1424+240 | |
dc.type | Article | |
dc.identifier.doi | 10.1088/2041-8205/785/1/l16 | |
dc.local.publishedsource | http://iopscience.iop.org/article/10.1088/2041-8205/785/1/L16/pdf | |
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