Browsing by Author "Greiner, J."

Now showing items 1-19 of 19

    • 26Al kinematics: superbubbles following the spiral arms? : Constraints from the statistics of star clusters and HI supershells 

      Krause, Martin; Diehl, R.; Bagetakos, Y.; Brinks, E.; Burkert, A.; Gerhard, O.; Greiner, J.; Kretschmer, K.; Siegert, T. (2015-06-12)
      High energy resolution spectroscopy of the 1.8 MeV radioactive decay line of 26Al with the SPI instrument on board the INTEGRAL satellite has recently revealed that diffuse 26Al has large velocities in comparison to other ...

    • Constraints on an optical afterglow and on supernova light following the short burst GRB 050813 

      Ferrero, P.; Sanchez, S.F.; Kann, D.A.; Klose, S.; Greiner, J.; Gorosabel, J.; Hartmann, D.H.; Henden, A.A.; Moller, P.; Palazzi, E.; Rau, A.; Stecklum, B.; Castro-Tirado, C.; Fynbo, J.; Hjorth, J.; Jakobsson, P.; Kouveliotou, C.; Masetti, N.; Pian, E.; Tanvir, N.; Wijers, R.A.M.J. (2007)

    • Correlated optical, X-ray, and $-ray flaring activity seen with INTEGRAL during the 2015 outburst of V404 Cygni 

      Rodriguez, J.; Cadolle Bel, M.; Alfonso-Garzón, J.; Siegert, T.; Zhang, X.-L.; Grinberg, V.; Savchenko, V.; Tomsick, J.~A.; Chenevez, J.; Clavel, M.; Corbel, S.; Diehl, R.; Domingo, A.; Gouiffès, C.; Greiner, J.; Krause, M.~G.~H.; Laurent, P.; Loh, A.; Markoff, S.; Mas-Hesse, J.~M.; Miller-Jones, J.~C.~A.; Russell, D.~M.; Wilms, J. (2015-09-23)
      After 25 years of quiescence, the microquasar V404 Cyg entered a new period of activity in June 2015. This X-ray source is known to undergo extremely bright and variable outbursts seen at all wavelengths. It is therefore ...

    • Early 56Ni decay gamma rays from SN2014J suggest an unusual explosion 

      Diehl, R.; Siegert, T.; Hillebrandt, W.; Grebenev, S.~A.; Greiner, J.; Krause, M.; Kromer, M.; Maeda, K.; Röpke, F.; Taubenberger, S. (2014-09-05)
      Type Ia supernovae result from binary systems that include a carbon-oxygen white dwarf, and these thermonuclear explosions typically produce 0.5 solar mass of radioactive 56Ni. The 56Ni is commonly believed to be buried ...

    • Gamma-Ray Emission of 60Fe and 26Al Radioactivity in Our Galaxy 

      Wang, W.; Siegert, Thomas; Dai, Z. G.; Diehl, R.; Greiner, J.; Heger, A.; Krause, M.; Lang, M.; Pleintinger, M. M. M.; Zhang, X. L. (2020-02-04)
      The isotopes 60Fe and 26Al originate from massive stars and their supernovae, reflecting ongoing nucleosynthesis in the Galaxy. We studied the gamma-ray emission from these isotopes at characteristic energies 1173, 1332, ...

    • Gamma-ray spectroscopy of positron annihilation in the Milky Way 

      Siegert, T.; Diehl, R.; Khachatryan, G.; Krause, M.~G.~H.; Guglielmetti, F.; Greiner, J.; Strong, A.~W.; Zhang, X. (2016-02-01)
      Context. The annihilation of positrons in the Galaxy's interstellar medium produces characteristic gamma-rays with a line at 511 keV. This gamma-ray emission has been observed with the spectrometer SPI on ESA's INTEGRAL ...

    • The GRB 060218/SN 2006aj event in the context of other gamma-ray burst supernovae 

      Ferrero, P.; Kann, D.A.; Zeh, A.; Klose, S.; Pian, E.; Palazzi, E.; Masetti, N.; Hartmann, D.H.; Sollerman, J.; Deng, J.; Filippenko, A.; Greiner, J.; Hughes, M.A.; Mazzali, P.; Li, W.; Rol, E.; Smith, R.J.; Tanvir, N. (2006)

    • 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 ...

    • INTEGRAL/SPI γ -ray line spectroscopy : Response and background characteristics 

      Diehl, R.; Siegert, T.; Greiner, J.; Krause, M.; Kretschmer, K.; Lang, M.; Pleintinger, M.; Strong, A.~W.; Weinberger, C.; Zhang, X. (2018-03-20)
      Context. The space based γ-ray observatory INTEGRAL of the European Space Agency (ESA) includes the spectrometer instrument "SPI". This is a coded mask telescope featuring a 19-element Germanium detector array for ...

    • Kinematics of massive star ejecta in the Milky Way as traced by $^26$Al 

      Kretschmer, K.; Diehl, R.; Krause, Martin; Burkert, A.; Fierlinger, K.; Gerhard, O.; Greiner, J.; Wang, W. (2013-11-19)
      Context. Massive stars form in groups and their winds and supernova explosions create superbubbles up to kpc in size. The fate of their ejecta is of vital importance for the dynamics of the interstellar medium, for chemical ...

    • A limit on the variation of the speed of light arising from quantum gravity effects 

      Abdo, A.A.; Ackermann, M.; Ajello, M.; Asano, K.; Atwood, W.B.; Axelsson, M.; Baldini, L.; Ballet, J.; Barbiellini, G.; Baring, M. G.; Bastieri, D.; Bechtol, K.; Bellazzini, R.; Berenji, B.; Bhat, P.N.; Bissaldi, E.; Bloom, E. D.; Bonamente, E.; Bonnell, J.; Borgland, A.W.; Bouvier, A.; Bregeon, J.; Brez, A.; Briggs, M.S.; Brigida, M.; Bruel, P.; Burgess, J. M.; Burnett, T. H.; Caliandro, G.A.; Cameron, R.A.; Caraveo, P.A.; Casandjian, J.M.; Cecchi, C.; Celik, Oe; Chaplin, V.; Charles, E.; Cheung, C. C.; Chiang, J.; Ciprini, S.; Claus, R.; Cohen-Tanugi, J.; Cominsky, L. R.; Connaughton, V.; Conrad, J.; Cutini, S.; Dermer, C. D.; de Angelis, A.; de Palma, F.; Digel, S.W.; Dingus, B. L.; do couto silva, E.; Drell, P.S.; Dubois, R.; Dumora, D.; Farnier, C.; Favuzzi, C.; Fegan, S. J.; Finke, J.; Fishman, G.; Focke, W.B.; Foschini, L.; Fukazawa, Y.; Funk, S.; Fusco, P.; Gargano, F.; Gasparrini, D.; Gehrels, N.; Germani, S.; Gibby, L.; Giebels, B.; Giglietto, N.; Giordano, F.; Glanzman, T.; Godfrey, G.; Granot, J.; Greiner, J.; Grenier, I.A.; Grondin, M. -H.; Grove, J. E.; Grupe, D.; Guillemot, L.; Guiriec, S.; Hanabata, Y.; Harding, A. K.; Hayashida, M.; Hays, E.; Hoversten, E. A.; Hughes, R.E.; Johannesson, G.; Johnson, A.S.; Johnson, R. P.; Johnson, W. N.; Kamae, T.; Katagiri, H.; Kataoka, J.; Kawai, N.; Kerr, M.; Kippen, R.M.; Knoedlseder, J.; Kocevski, D.; Kouveliotou, C.; Kuehn, F.; Kuss, M.; Lande, J.; Latronico, L.; Lemoine-Goumard, M.; Longo, F.; Loparco, F.; Lott, B.; Lovellette, M. N.; Lubrano, P.; Madejski, G. M.; Makeev, A.; Mazziotta, M.N.; McBreen, S.; McEnery, J.E.; McGlynn, S.; Meszaros, P.; Meurer, C.; Michelson, P.F.; Mitthumsiri, W.; Mizuno, T.; Moiseev, A.A.; Monte, C.; Monzani, M.E.; Moretti, E.; Morselli, A.; Moskalenko, I.V.; Murgia, S.; Nakamori, T.; Nolan, P.L.; Norris, J.P.; Nuss, E.; Ohno, M.; Ohsugi, T.; Omodei, N.; Orlando, E.; Ormes, J. F.; Ozaki, M.; Paciesas, W. S.; Paneque, D.; Panetta, J. H.; Parent, D.; Pelassa, V.; Pepe, M.; Pesce-Rollins, M.; Petrosian, V.; Piron, F.; Porter, T.A.; Preece, R.; Raino, S.; Ramirez-Ruiz, E.; Rando, R.; Razzano, M.; Razzaque, S.; Reimer, A.; Reimer, O.; Reposeur, T.; Ritz, S.; Rochester, L. S.; Rodriguez, A. Y.; Roth, M.; Ryde, F.; Sadrozinski, H.F.W.; Sanchez, D.; Sander, A.; Parkinson, P. M. Saz; Scargle, J. D.; Schalk, T. L.; Sgro, C.; Siskind, E.J.; Smith, D. A.; Smith, P.D.; Spandre, G.; Spinelli, P.; Stamatikos, M.; Stecker, F. W.; Strickman, M.S.; Suson, D. J.; Tajima, H.; Takahashi, H.; Takahashi, T.; Tanaka, T.; Thayer, J. B.; Thayer, J.G.; Thompson, D.J.; Tibaldo, L.; Toma, K.; Torres, D.F.; Tosti, G.; Troja, E.; Uchiyama, Y.; Uehara, T.; Usher, T.L.; van der Horst, A. J.; Vasileiou, V.; Vilchez, N.; Vitale, V.; von Kienlin, A.; Waite, A.P.; Wang, P.; Wilson-Hodge, C.; Winer, B.L.; Wood, K.S.; Wu, X. F.; Yamazaki, R.; Ylinen, T.; Ziegler, M. (2009-11-19)
      A cornerstone of Einstein's special relativity is Lorentz invariance-the postulate that all observers measure exactly the same speed of light in vacuum, independent of photon-energy. While special relativity assumes that ...

    • 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 ...

    • On the Afterglow of the X-ray Flash of 2003 July 23: Photometric evdence for an Off-Axis Gamma-Ray burst with an Associated Supernova 

      Fynbo, J.; Sollerman, J.; Hjorth, J.; Grundahl, F.; Gorosabel, J.; Weidinger, M.; Moller, P.; Jensen, B.L.; Vreeswijk, P.M.; Fransson, C.; Ramirez-Ruiz, E.; Jakobsson, P.; Jorgensen, S.F.; Vinter, C.; Andersen, M.I.; Castro Ceron, J.M.; Castro-Tirado, A.J.; Fruchter, A.S.; Greiner, J.; Kouveliotou, C.; Levan, A.; Klose, S.; Masetti, N.; Pedersen, K.; Palazzi, E.; Pian, E.; Rhoads, J.E.; Rol, E.; Sekiguchi, T.; Tanvir, N.; Tristram, P.J.; Postigo, A.; Wijers, R.A.M.J.; van den Heuvel, E.P.J. (2004-07)

    • Positron annihilation signatures associated with the outburst of the microquasar V404 Cygni 

      Siegert, T.; Diehl, R.; Greiner, J.; Krause, M.~G.~H.; Beloborodov, A.~M.; Bel, M.~C.; Guglielmetti, F.; Rodriguez, J.; Strong, A.~W.; Zhang, X. (2016-03-17)
      Microquasars1, 2, 3, 4 are stellar-mass black holes accreting matter from a companion star5 and ejecting plasma jets at almost the speed of light. They are analogues of quasars that contain supermassive black holes of 106 ...

    • Revisiting INTEGRAL/SPI observations of $^44$Ti from Cassiopeia A 

      Siegert, T.; Diehl, R.; Krause, Martin; Greiner, J. (2015-07-15)
      Context. The 340-yr old supernova remnant Cassiopeia A, located at 3.4 kpc distance, is the best-studied young core-collapse super- nova remnant. Nucleosynthesis yields in radioactive isotopes have been studied with different ...

    • 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 ...

    • SN2014J gamma rays from the $^56$Ni decay chain 

      Diehl, R.; Siegert, T.; Hillebrandt, W.; Krause, M.; Greiner, J.; Maeda, K.; Röpke, F.~K.; Sim, S.~A.; Wang, Wei; Zhang, X. (2015-02-01)
      Context. The detection and measurement of gamma-ray lines from the decay chain of 56Ni provides unique information about the explosion in supernovae. SN2014J at 3.3 Mpc is a sufficiently-nearby supernova of type Ia so that ...

    • 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 ...

    • A very energetic supernova associated with the -ray burst of 29 March 2003 

      Hjorth, J.; Sollerman, J.; Moller, P.; Fynbo, J.; Woosley, S.E.; Kouveliotou, C.; Tanvir, N.; Greiner, J.; Andersen, M.I.; Castro-Tirado, A.J.; Castro Ceron, J.M.; Fruchter, A.S.; Gorosabel, J.; Jakobsson, P.; Kaper, L.; Klose, S.; Masetti, N.; Pedersen, H.; Pedersen, K.; Pian, E.; Palazzi, E.; Rhoads, J.E.; Rol, E.; van den Heuvel, E.P.J.; Vreeswijk, P.M.; Watson, D.; Wijers, R.A.M.J. (2003)