Browsing Externally hosted open access publications with University of Galway authors (1) by Subject "lac objects"

Now showing items 1-4 of 4

    • A multiwavelength view of the tev blazar markarian 421: correlated variability, flaring, and spectral evolution 

      Błażejowski, M.; Blaylock, G.; Bond, I. H.; Bradbury, S. M.; Buckley, J. H.; Carter‐Lewis, D. A.; Celik, O.; Cogan, P.; Cui, W.; Daniel, M.; Duke, C.; Falcone, A.; Fegan, D. J.; Fegan, S. J.; Finley, J. P.; Fortson, L.; Gammell, S.; Gibbs, K.; Gillanders, G. G.; Grube, J.; Gutierrez, K.; Hall, J.; Hanna, D.; Holder, J.; Horan, D.; Humensky, B.; Kenny, G.; Kertzman, M.; Kieda, D.; Kildea, J.; Knapp, J.; Kosack, K.; Krawczynski, H.; Krennrich, F.; Lang, M.; LeBohec, S.; Linton, E.; Lloyd‐Evans, J.; Maier, G.; Mendoza, D.; Milovanovic, A.; Moriarty, P.; Nagai, T. N.; Ong, R. A.; Power‐Mooney, B.; Quinn, J.; Quinn, M.; Ragan, K.; Reynolds, P. T.; Rebillot, P.; Rose, H. J.; Schroedter, M.; Sembroski, G. H.; Swordy, S. P.; Syson, A.; Valcarel, L.; Vassiliev, V. V.; Wakely, S. P.; Walker, G.; Weekes, T. C.; White, R.; Zweerink, J.; Mochejska, B.; Smith, B.; Aller, M.; Aller, H.; Terasranta, H.; Boltwood, P.; Sadun, A.; Stanek, K.; Adams, E.; Foster, J.; Hartman, J.; Lai, K.; Bottcher, M.; Reimer, A.; Jung, I.; , (IOP Publishing, 2005-09-01)
      We report results from an intensive multiwavelength monitoring campaign on the TeV blazar Mrk 421 over the period of 2003 - 2004. The source was observed simultaneously at TeV energies with the Whipple 10 m telescope and ...

    • A search for tev gamma‐ray emission from high‐peaked flat‐spectrum radio quasars using the whipple air cerenkov telescope 

      Falcone, A. D.; Bond, I. H.; Boyle, P. J.; Bradbury, S. M.; Buckley, J. H.; Carter‐Lewis, D.; Celik, O.; Cui, W.; Daniel, M.; D’Vali, M.; de la Calle Perez, I.; Duke, C.; Fegan, D. J.; Fegan, S. J.; Finley, J. P.; Fortson, L. F.; Gaidos, J.; Gammell, S.; Gibbs, K.; Gillanders, G. H.; Grube, J.; Hall, J.; Hall, T. A.; Hanna, D.; Hillas, A. M.; Holder, J.; Horan, D.; Jarvis, A.; Kenny, G. E.; Kertzman, M.; Kieda, D.; Kildea, J.; Knapp, J.; Kosack, K.; Krawczynski, H.; Krennrich, F.; Lang, M. J.; LeBohec, S.; Linton, E.; Lloyd‐Evans, J.; Milovanovic, A.; Moriarty, P.; Muller, D.; Nagai, T.; Nolan, S.; Ong, R.; Pallassini, R.; Petry, D.; Pizlo, F.; Power‐Mooney, B.; Quinn, J.; Quinn, M.; Ragan, K.; Rebillot, P.; Reynolds, P. T.; Rose, H. J.; Schroedter, M.; Sembroski, G.; Swordy, S. P.; Syson, A.; Tyler, K.; Vassiliev, V. V.; Wakely, S. P.; Walker, G.; Weekes, T. C.; Zweerink, J. (IOP Publishing, 2004-10-01)
      Blazars have traditionally been separated into two broad categories based on their optical emission characteristics. Blazars with faint or no emission lines are referred to as BL Lacertae objects ( BL Lacs), and blazars ...

    • Constraints on the very high energy emission from bl lacertae objects 

      Horan, D.; Badran, H. M.; Bond, I. H.; Boyle, P. J.; Bradbury, S. M.; Buckley, J. H.; Carter‐Lewis, D. A.; Catanese, M.; Celik, O.; Cui, W.; Daniel, M.; D’Vali, M.; de la Calle Perez, I.; Duke, C.; Falcone, A.; Fegan, D. J.; Fegan, S. J.; Finley, J. P.; Fortson, L. F.; Gaidos, J. A.; Gammell, S.; Gibbs, K.; Gillanders, G. H.; Grube, J.; Hall, J.; Hall, T. A.; Hanna, D.; Hillas, A. M.; Holder, J.; Jarvis, A.; Jordan, M.; Kenny, G. E.; Kertzman, M.; Kieda, D.; Kildea, J.; Knapp, J.; Kosack, K.; Krawczynski, H.; Krennrich, F.; Lang, M. J.; Le Bohec, S.; Linton, E.; Lloyd‐Evans, J.; Milovanovic, A.; Moriarty, P.; Muller, D.; Nagai, T.; Nolan, S.; Ong, R. A.; Pallassini, R.; Petry, D.; Power‐Mooney, B.; Quinn, J.; Quinn, M.; Ragan, K.; Rebillot, P.; Reynolds, P. T.; Rose, H. J.; Schroedter, M.; Sembroski, G. H.; Swordy, S. P.; Syson, A.; Vassiliev, V. V.; Wakely, S. P.; Walker, G.; Weekes, T. C.; Zweerink, J. (IOP Publishing, 2004-03-01)
      We present results from observations of 29 BL Lacertae objects, taken with the Whipple Observatory 10 m gamma-ray telescope between 1995 and 2000. The observed objects are mostly at low redshift (z<0.2), but observations ...

    • Multiwavelength observations of the blazar markarian 421 in 2002 december and 2003 january 

      Rebillot, P. F.; Badran, H. M.; Blaylock, G.; Bradbury, S. M.; Buckley, J. H.; Carter‐Lewis, D. A.; Celik, O.; Chow, Y. C.; Cogan, P.; Cui, W.; Daniel, M.; Duke, C.; Falcone, A.; Fegan, S. J.; Finley, J. P.; Fortson, L. F.; Gillanders, G. H.; Grube, J.; Gutierrez, K.; Gyuk, G.; Hanna, D.; Holder, J.; Horan, D.; Hughes, S. B.; Kenny, G. E.; Kertzman, M.; Kieda, D.; Kildea, J.; Kosack, K.; Krawczynski, H.; Krennrich, F.; Lang, M. J.; Le Bohec, S.; Linton, E.; Maier, G.; Moriarty, P.; Perkins, J.; Pohl, M.; Quinn, J.; Ragan, K.; Reynolds, P. T.; Rose, H. J.; Schroedter, M.; Sembroski, G. H.; Steele, G.; Swordy, S. P.; Valcarcel, L.; Vassiliev, V. V.; Wakely, S. P.; Weekes, T. C.; Zweerink, J.; VERITAS Collaboration), (The; Aller, M.; Aller, H.; Boltwood, P.; Jung, I.; Kranich, D.; Nilsson, K.; Pasanen, M.; Sadun, A.; Sillanpaa, A. (IOP Publishing, 2006-04-20)
      We report on a multiwavelength campaign on the TeV gamma-ray blazar Mrk 421 performed during 2002 December and 2003 January. These target of opportunity observations were initiated by the detection of X-ray and TeV gamma-ray ...