Search results

Journal Article (28)

  1. 21.
    Journal Article
    Lichti, G. G.; Neronov, A.; Mowlavi, M.; Ajello, M.; Beckmann, V.; Boisson, C.; Buckley, J.; Charlot, P.; Collmar, W.; Degrange, B. et al.; Djannati-Atai, A.; Falcone, A.; Finley, J.; Fossati, G.; Henri, G.; Katarzynski, K.; Kieda, D.; Lahteenmaki, A.; Mannheim, K.; Marcowith, A.; Punch, M.; Saggione, A.; Sauge, L.; Schoenfelder, V.; Sillanpaa, A.; Smith, D.; Sol, H.; Tavecchio, F.; Takalo, L.; Tornikoski, M.; Kienlin, A. v.; Weekes, T.: High state of Mkn 421 in the hard X-rays. The Astronomer's Telegram 840 (2006)
  2. 22.
    Journal Article
    Zhang, S.; Collmar, W.; Schönfelder, V.: COMPTEL observations of the γ-ray blazars 3C 454.3 and CTA 102 during the CGRO mission. Astronomy & Astrophysics 444 (3), pp. 767 - 775 (2005)
  3. 23.
    Journal Article
    Zhang, S.; Collmar, W.; Hermsen, W.; Schönfelder, V.: Spectral constraints on unidentified EGRET gamma-ray sources from COMPTEL MeV observations. Astronomy & Astrophysics 421 (3), pp. 983 - 990 (2004)
  4. 24.
    Journal Article
    Grandi, P.; Fiocchi, M.; Perola, C. G.; Urry, C. M.; Maraschi, L.; Massaro, E.; Matt, G.; Preite-Martinez, A.; Steinle, H.; Collmar, W.: BeppoSAX observations of Centaurus A: The hard continuum and the iron-line feature. The Astrophysical Journal 593, pp. 160 - 168 (2003)
  5. 25.
    Journal Article
    Zhang, S.; Collmar, W.; Schonfelder, V.: An unidentified variable gamma-ray source near the galactic plane detected by COMPTEL. Astronomy & Astrophysics 396 (3), pp. 923 - 928 (2002)
  6. 26.
    Journal Article
    McConnell, M. L.; Zdziarski, A. A.; Bennett, K.; Bloemen, H.; Collmar, W.; Hermsen, W.; Kuiper, L.; Paciesas, W.; Phlips, B. F.; Poutanen, J. et al.; Ryan, J. M.; Schönfelder, V.; Steinle, H.; Strong, A. W.: The soft gamma-ray spectral variability of Cygnus X-1. The Astrophysical Journal 572 (2), pp. 984 - 995 (2002)
  7. 27.
    Journal Article
    Zhang, S.; Collmar, W.; Bennett, K.; Bloemen, H.; Hermsen, W.; McConnell, M.; Reimer, O.; Schönfelder, V.; Wagner, S. J.; Williams, O. R.: COMPTEL observations of the gamma-ray blazar PKS 1622-297. Astronomy & Astrophysics 386 (3), pp. 843 - 853 (2002)
  8. 28.
    Journal Article
    Maraschi, L.; Grandi, P.; Urry, C. M.; Wehrle, A. E.; Madejski, G. M.; Fink, H. H.; Ghisellini, G.; Hartman, R. C.; Koratkar, A. P.; von Montigny, C. et al.; Pian, E.; Thomas, H. C.; Treves, A.; Aller, M. F.; Bailyn, C. D.; Balonek, T. J.; Bock, H.; Collmar, W.; Glass, I. S.; Litchfield, S. J.; McHardy, I. M.; Mendez, R.; Pesce, J.; Reuter, H. P.; Robson, E. I.; Steppe, H.; Stevens, J. A.; Teräsranta, H.; Wagner, S. J.: The 1993 multiwavelength campaign on 3C 279: the radio to gamma-ray energy distribution in low state. The Astrophysical Journal 435, pp. L91 - L95 (1994)

Conference Paper (36)

  1. 29.
    Conference Paper
    Bottacini, E.; Böttcher, M.; Pian, E.; Collmar, W.; Gasparrini, D.: On the Underlying Particles in the Jet of 3C 279. IFS2017 - 7th International Fermi Symposium, Garmisch-Partenkirchen, Germany, October 15, 2017 - October 20, 2017. Proceedings of Science (2017)
  2. 30.
    Conference Paper
    Collmar, W.; Strong, A.: COMPTEL reloaded: a heritage MeV data project. IFS2017 - 7th International Fermi Symposium, Garmisch-Partenkirchen, Germany, October 15, 2017 - October 20, 2017. Proceedings of Science (2017)
  3. 31.
    Conference Paper
    Stacy, J. G.; Collmar, W.; Strong, A.; Carrminana, A.: Limits on MeV gamma-ray emission from active galaxies and other unidentified high-latitude gamma-ray sources observed with CGRO/COMPTEL. In: Proceedings of the 30th International Cosmic Ray Conference, pp. 1085 - 1087 (Eds. Caballero, R.; D'Olivo, J.C.; Medina-Tanco, G.; Nellen, L.; Sánchez, F.A. et al.). 30th International Cosmic Ray Conference, Mérida Yucatan, México, July 03, 2007 - July 11, 2007. Universidad Nacional Autónoma de México, Mexico City, Mexico (2008)
  4. 32.
    Conference Paper
    Bottacini, E.; Collmar, W.; Courvoisier, T.: INTEGRAL observations of the gamma-ray blazar 3C 279 during the 'deep extragalactic survey'. In: Proceedings of the 6th Integral Workshop - The Obscured Universe, pp. 203 - 206 (Eds. Grebenev, S.; Sunyaev, R.; Winkler, C.). 6th Integral Workshop - The Obscured Universe, Moscow, Russian Federation, July 02, 2006 - July 08, 2006. ESA Publications Division, Noordwijk, The Netherlands (2007)
  5. 33.
    Conference Paper
    Collmar, W.; Böttcher, M.; Krichbaum, T.; Bottacini, E.; Burwitz, V.; Cucchiara, A.; Grupe, D.; Gurwell, M.; Kretschmar, P.; Pottschmidt, K. et al.; Bremer, M.; Leon, S.; Ungerechts, H.; Giommi, P.; Capalbi, M.; WEBT collaboration: Multifrequency observations of the blazar 3C 279 in January 2006. In: Proceedings of the 6th Integral Workshop - The Obscured Universe, pp. 207 - 210 (Eds. Grebenev, S.; Sunyaev, R.; Winkler, C.). 6th Integral Workshop - The Obscured Universe, Moscow, Russian Federation, July 02, 2006 - July 08, 2006. ESA Publications Division, Noordwijk, The Netherlands (2007)
  6. 34.
    Conference Paper
    Torres, D. F.; Zhang, S.; Reimer, O.; Barcons, X.; Corral, A.; Bosch-Ramon, V.; Paredes, J. M.; Romero, G. E.; Qu, J.; Collmar, W. et al.; Schönfelder, V.; Butt, Y.: INTEGRAL/XMM views on the MeV source GRO J1411-64. Conference on the Multi-Messenger Approach to High Energy Gamma-Ray Sources, Barcelona, Spain, July 04, 2006 - July 07, 2006. Astrophysics and Space Science 309 (1-4), pp. 17 - 21 (2007)
  7. 35.
    Conference Paper
    Zhang, S.; Collmar, W.: Evidence for a new MeV source observed by the COMPTEL experiment aboard CGRO. Conference on the Multi-Messenger Approach to High Energy Gamma-Ray Sources, Barcelona, Spain, July 04, 2006 - July 07, 2006. Astrophysics and Space Science 309 (1-4), pp. 23 - 27 (2007)
  8. 36.
    Conference Paper
    Lichti, G. G.; Bottacini, E.; Charlot, P.; Collmar, W.; Horan, D.; Kienlin, A. v.; Lähteenmäki, A.; Nilsson, K.; Petry, D.; Sillanpää, A. et al.; Tornikoski, M.; Weekes, T.: INTEGRAL and multiwavelength observations of the blazar Mrk 421 during an active phase. In: The First GLAST Symposium, pp. 371 - 372 (Eds. Ritz, S.; Michelson, P.; Meegan, C.). The First GLAST Symposium, Stanford, California, USA, February 05, 2007 - February 08, 2007. American Institute of Physics, Melville, NY, USA (2007)
  9. 37.
    Conference Paper
    Collmar, W.: New blazar detections at MeV energies by COMPTEL. In: Blazar Variability Workshop II: Entering the GLAST Era, pp. 120 - 123 (Eds. Miller, H.R.; Marshall, K.; Webb, J.R.; Aller, M.F.). Blazar Variability Workshop II: Entering the GLAST Era, Miami, Florida, USA, April 10, 2005 - April 12, 2005. Astronomical Society of the Pacific, San Francisco, CA, USA (2006)
  10. 38.
    Conference Paper
    Rothschild, R. E.; Tomsick, J.; Wilms, J.; Staubert, R.; Benlloch, S.; Collmar, W.; Madejski, G.; Deluit, S.; Khandrika, H.: INTEGRAL/RXTE observations of Cen A. In: Proceedings of the X-ray Universe 2005, pp. 657 - 658 (Ed. Wilson, A.). The X-ray Universe 2005, El Escorial, Madrid, Spain, September 26, 2005 - September 30, 2005. ESA Publications Division, Noordwijk, The Netherlands (2006)
  11. 39.
    Conference Paper
    Zhang, S.; Collmar, W.; Schönfelder, V.: Comptel constraints on unidentified EGRET sources. Conference on multiwavelenght approach to undentified gamma-ray sources, Hong Kong, June 01, 2004 - June 04, 2004. multiwavelenght approach to unidentified gamma-ray sources, pp. 283 - 290 (2005)
  12. 40.
    Conference Paper
    Collmar, W.: COMPTEL MeV observations of unidentified gamma-ray sources. In: Proceedings of The fourth AGILE Science Workshop: X-ray and gamma-ray astrophysics of galactic sources, pp. 1 - 6. The fourth AGILE Science Workshop: X-ray and gamma-ray astrophysics of galactic sources, Rome, Italy, 2003. AGILE, Rome (2004)
Go to Editor View