Now showing items 1-3 of 3

    • THE EVOLUTION OF SWIFT/BAT BLAZARS AND THE ORIGIN OF THE MeV BACKGROUND 

      Ajello, M.; Costamante, L.; Sambruna, R. M.; Gehrels, N.; Chiang, J.; Rau, A.; Escala, A.; Greiner, J.; Tueller, J.; Wall, J. V.; Mushotzky, R. F (IOP PUBLISHING LTD, 2009-07-01)
      We use three years of data from the Swift/Burst Alert Telescope ( BAT) survey to select a complete sample of X-ray blazars above 15 keV. This sample comprises 26 flat-spectrum radio quasars (FSRQs) and 12 BL Lacertae (BL ...
    • A Missing-link in the Supernova–GRB Connection: The Case of SN 2012ap 

      Chakrabort, Sayan; Soderberg, Alicia; Chomiuk, Laura; Kamble, Atish; Yadav, Naveen; Ray, Alak; Hurley, Kevin; Margutti, Raffaella; Milisavljevic, Dan; Bietenholz, Michael; Brunthaler, Andreas; Pignata Libralato, Giuliano; Pian, Elena; Mazzali, Paolo; Fransson, Claes; Bartel, Norbert; Hamuy Wackenhut, Mario; Levesque, Emily; MacFadyen, Andrew; Dittmann, Jason; Krauss, Miriam; Briggs, M.S.; Connaughton, V.; Yamaoka, K.; Takahashi, T.; Ohno, M.; Fukazawa, Y.; Tashiro, M.; Terada, Y.; Murakam, T.; Goldsten, J.; Barthelmy, S.; Gehrels, N.; Cummings, J.; Krimm, H.; Palmer, D.; Golenetskii, S.; Aptekar, R.; Frederiks, D.; Cline, T.; Mitrofanov, I. G.; Golovin, D.; Litvak, M. L.; Sanin, A. B.; Boynton, W.; Fellows, C.; Harshman, K.; Enos, H.; von Kienlin, A.; Rau, A.; Zhang, X.; Savchenko, V. (The American Astronomical Society, 2015-06-01)
      Gamma-ray bursts (GRBs) are characterized by ultra-relativistic outflows, while supernovae are generally characterized by non-relativistic ejecta. GRB afterglows decelerate rapidly, usually within days, because their ...
    • NEARBY SUPERNOVA FACTORY OBSERVATIONS OF SN 2007IF: FIRST TOTAL MASS MEASUREMENT OF A SUPER-CHANDRASEKHAR-MASS PROGENITOR 

      Scalzo, R. A.; Aldering, G.; Antilogus, P.; Aragón, C.; Bailey, S.; Baltay, C.; Bongard, S.; Buton, C.; Childress, M.; Chotard, N.; Copin, Y.; Fakhouri, H. K.; Gal Yam, Avishay; Gangler, E.; Hoyer, Sergio; Kasliwal, M.; Loken, S.; Nugent, P.; Pain, R.; Pécontal, E.; Pereira, R.; Perlmutter, S.; Rabinowitz, David; Rau, A.; Rigaudier, G.; Runge, K.; Smadja, G.; Tao, C.; Thomas, R. C.; Weaver, B.; Wu, C. (2010-03)
      We present photometric and spectroscopic observations of SN 2007if, an overluminous (MV = -20.4), red (B -V = 0.16 at B-band maximum), slow-rising (trise = 24 days) type Ia supernova (SN Ia) in a very faint (Mg = -14.10) ...