Browsing University of Hertfordshire by Author "Schady, P."

Now showing items 1-6 of 6

    • The cosmic build-up of dust and metals : Accurate abundances from GRB-selected star-forming galaxies at 1.7 < z < 6.3 

      Heintz, K. E.; Cia, A. De; Thöne, C. C.; Krogager, J. -K.; Yates, R. M.; Vejlgaard, S.; Konstantopoulou, C.; Fynbo, J. P. U.; Watson, D.; Narayanan, D.; Wilson, S. N.; Arabsalmani, M.; Campana, S.; D'Elia, V.; Pasquale, M. De; Hartmann, D. H.; Izzo, L.; Jakobsson, P.; Kouveliotou, C.; Levan, A.; Li, Q.; Malesani, D. B.; Melandri, A.; Milvang-Jensen, B.; Møller, P.; Palazzi, E.; Palmerio, J.; Petitjean, P.; Pugliese, G.; Rossi, A.; Saccardi, A.; Salvaterra, R.; Savaglio, S.; Schady, P.; Stratta, G.; Tanvir, N. R.; Postigo, A. de Ugarte; Vergani, S. D.; Wiersema, K.; Wijers, R. A. M. J.; Zafar, T. (2023-11-15)
      The chemical enrichment of dust and metals in the interstellar medium of galaxies throughout cosmic time is one of the key driving processes of galaxy evolution. Here we study the evolution of the gas-phase metallicities, ...

    • 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 160410a: The first chemical study of the interstellar medium of a short GRB 

      Fernández, J. F. Agüí; Thöne, C. C.; Kann, D. A.; Postigo, A. de Ugarte; Selsing, J.; Schady, P.; Yates, R. M.; Greiner, J.; Oates, S. R.; Malesani, D.; Xu, D.; Klotz, A.; Campana, S.; Rossi, A.; Perley, D. A.; Blazek, M.; D'Avanzo, P.; Giunta, A.; Hartmann, D.; Heintz, K. E.; Jakobsson, P.; C., C. Kirkpatrick IV; Kouveliotou, C.; Melandri, A.; Pugliese, G.; Salvaterra, R.; Starling, R. L. C.; Tanvir, N. R.; Vergani, S. D.; Wiersema, K. (2023-03-01)
      Short gamma-ray bursts (SGRBs) are produced by the coalescence of compact binary systems which are remnants of massive stars. GRB 160410A is classified as a short-duration GRB with extended emission and is currently the ...

    • Massive stars formed in atomic hydrogen reservoirs : HI observations of gamma-ray burst host galaxies 

      Michałowski, Michał J.; Gentile, G.; Hjorth, J.; Krumholz, M. R.; Tanvir, N. R.; Kamphuis, P.; Burlon, D.; Baes, M.; Basa, S.; Berta, S.; Ceron, J. M. Castro; Crosby, D.; D'Elia, V.; Elliott, J.; Greiner, J.; Hunt, L. K.; Klose, S.; Koprowski, M. P.; Floc'h, E. Le; Malesani, D.; Murphy, T.; Guelbenzu, A. Nicuesa; Palazzi, E.; Rasmussen, J.; Rossi, A.; Savaglio, S.; Schady, P.; Sollerman, J.; Postigo, A. de Ugarte; Watson, D.; Werf, P. van der; Vergani, S. D.; Xu, D. (2015-08-13)
      Long gamma-ray bursts (GRBs), among the most energetic events in the Universe, are explosions of massive and short-lived stars, so they pinpoint locations of recent star formation. However, several GRB host galaxies have ...

    • A new y-ray burst classification scheme from GRB 060614 

      Gehrels, N.; Norris, J.P.; Barthelmy, S.; Granot, J.; Kaneko, Y.; Kouveliotou, C.; Markwardt, C.B.; Meszaros, P.; Nakar, E.; Nousek, J.A.; O'Brien, P.T.; Page, M.J.; Palmer, D.M.; Parsons, A.; Roming, P.W.A.; Sakamoto, T.; Sarazin, C.L.; Schady, P.; Stamatikos, M.; Woosley, S.E. (2006)

    • Soft X-ray absorption excess in gamma-ray burst afterglow spectra: Absorption by turbulent ISM 

      Tanga, M.; Schady, P.; Gatto, A.; Greiner, J.; Krause, M.~G.~H.; Diehl, R.; Savaglio, S.; Walch, S. (2016-11-01)
      Two-thirds of long duration gamma-ray bursts (GRBs) show soft X-ray absorption in excess of the Milky Way. The column densities of metals inferred from UV and optical spectra differ from those derived from soft X-ray ...