Browsing by Author "Guidorzi, C."

Now showing items 1-5 of 5

    • The Early-Time Optical Properties of Gamma-Ray Burst Afterglows 

      Melandri, A.; Mundell, C.G.; Kobayashi, S.; Guidorzi, C.; Gomboc, A.; Steele, I.A.; Smith, R.J.; Bersier, D.; Mottram, C.J.; Carter, D.; Bode, M.F.; O'Brien, P.T.; Tanvir, N.; Rol, E.; Chapman, R. (2008)
      We present a multiwavelength analysis of 63 gamma-ray bursts observed with the world's three largest robotic optical telescopes, the Liverpool and Faulkes Telescopes (North and South). Optical emission was detected for 24 ...

    • GRB 081028 and its late-time afterglow re-brightening 

      Margutti, R.; Genet, F.; Granot, J.; Duran, R.B.; Guidorzi, C.; Chincarini, G.; Mao, J.; Schady, P.; Sakamoto, T.; Miller, A.A.; Olofsson, G.; Bloom, J.S.; Evans, P.A.; Fynbo, J.; Malesani, D.; Moretti, A.; Pasotti, F.; Starr, D.; Burrows, D.N.; Barthelmy, S.; Roming, P.W.A.; Gehrels, N. (2010)
      Swift captured for the first time a smoothly rising X-ray re-brightening of clear non-flaring origin after the steep decay in a long gamma-ray burst (GRB): GRB 081028. A rising phase is likely present in all GRBs but is ...

    • GRB 090902B: afterglow observations and implications 

      Pandey, S.B.; Swenson, C.A.; Perley, D.A.; Guidorzi, C.; Wiersema, K.; Malesani, D.; Akerlof, C.; Ashley, M.C.B.; Bersier, D.; Cano, Z.; Gomboc, A.; Ilyin, I.; Jakobsson, P.; Kleiser, I.K.W.; Kobayashi, S.; Kouveliotou, C.; Levan, A.; McKay, T.A.; Melandri, A.; Mottram, C.J.; Mundell, C.G.; O'Brien, P.T.; Phillips, A.; Rex, J.M.; Siegel, M.H.; Smith, R.J.; Steele, I.A.; Stratta, G.; Tanvir, N.; Weights, D.; Yost, S.A.; Yuan, F.; Zheng, W. (2010)
      The optical-infrared afterglow of the Large Area Telescope (LAT)-detected long-duration burst, GRB 090902B, has been observed by several instruments. The earliest detection by ROTSE-IIIa occurred 80 minutes after detection ...

    • Rise and fall of the X-ray flash 080330: an off-axis jet? 

      Guidorzi, C.; Clemens, C.; Kobayashi, S.; Granot, J.; Melandri, A.; D'Avanzo, P.; Kuin, N.P.M.; Klotz, A.; Fynbo, J.; Covino, S.; Greiner, J.; Malesani, D.; Mao, J.; Mundell, C.G.; Steele, I.A.; Jakobsson, P.; Margutti, R.; Bersier, D.; Campana, S.; Chincarini, G.; D'Elia, V.; Fugazza, D.; Genet, F.; Gomboc, A.; Kruhler, T.; Yoldas, A.K.; Moretti, A.; Mottram, C.J.; O'Brien, P.T.; Smith, R.J.; Szokoly, G.; Tagliaferri, G.; Tanvir, N.; Gehrels, N. (2009)
      Context. X-ray flashes (XRFs) are a class of gamma-ray bursts (GRBs) with a peak energy of the time-integrated spectrum, , typically below 30 keV, whereas classical GRBs have of a few hundreds of keV. Apart from and the ...

    • X-ray flare candidates in short gamma-ray bursts 

      Margutti, R.; Chincarini, G.; Bernardini, M.G.; Zaninoni, E.; Margutti, R.; Berger, E.; Soderberg, A.M.; Chincarini, G.; Granot, J.; Guidorzi, C.; Gehrels, N.; Stamatikos, M.; Stamatikos, M.; Zaninoni, E. (2011-11-01)
      We present the first systematic study of X-ray flare candidates in short gamma-ray bursts (SGRBs) exploiting the large 6-year Swift data base with the aim to constrain the physical nature of such fluctuations. We find that ...