Search Results - (Author, Cooperation:P. T. O'Brien)
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1Latest Papers from Table of Contents or Articles in PressK. Wiersema ; S. Covino ; K. Toma ; A. J. van der Horst ; K. Varela ; M. Min ; J. Greiner ; R. L. Starling ; N. R. Tanvir ; R. A. Wijers ; S. Campana ; P. A. Curran ; Y. Fan ; J. P. Fynbo ; J. Gorosabel ; A. Gomboc ; D. Gotz ; J. Hjorth ; Z. P. Jin ; S. Kobayashi ; C. Kouveliotou ; C. Mundell ; P. T. O'Brien ; E. Pian ; A. Rowlinson ; D. M. Russell ; R. Salvaterra ; S. di Serego Alighieri ; G. Tagliaferri ; S. D. Vergani ; J. Elliott ; C. Farina ; O. E. Hartoog ; R. Karjalainen ; S. Klose ; F. Knust ; A. J. Levan ; P. Schady ; V. Sudilovsky ; R. Willingale
Nature Publishing Group (NPG)
Published 2014Staff ViewPublication Date: 2014-04-30Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
2Latest Papers from Table of Contents or Articles in PressJ. S. Bloom ; D. Giannios ; B. D. Metzger ; S. B. Cenko ; D. A. Perley ; N. R. Butler ; N. R. Tanvir ; A. J. Levan ; P. T. O'Brien ; L. E. Strubbe ; F. De Colle ; E. Ramirez-Ruiz ; W. H. Lee ; S. Nayakshin ; E. Quataert ; A. R. King ; A. Cucchiara ; J. Guillochon ; G. C. Bower ; A. S. Fruchter ; A. N. Morgan ; A. J. van der Horst
American Association for the Advancement of Science (AAAS)
Published 2011Staff ViewPublication Date: 2011-06-18Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
3Latest Papers from Table of Contents or Articles in PressA. J. Levan ; N. R. Tanvir ; S. B. Cenko ; D. A. Perley ; K. Wiersema ; J. S. Bloom ; A. S. Fruchter ; U. Postigo Ade ; P. T. O'Brien ; N. Butler ; A. J. van der Horst ; G. Leloudas ; A. N. Morgan ; K. Misra ; G. C. Bower ; J. Farihi ; R. L. Tunnicliffe ; M. Modjaz ; J. M. Silverman ; J. Hjorth ; C. Thone ; A. Cucchiara ; J. M. Ceron ; A. J. Castro-Tirado ; J. A. Arnold ; M. Bremer ; J. P. Brodie ; T. Carroll ; M. C. Cooper ; P. A. Curran ; R. M. Cutri ; J. Ehle ; D. Forbes ; J. Fynbo ; J. Gorosabel ; J. Graham ; D. I. Hoffman ; S. Guziy ; P. Jakobsson ; A. Kamble ; T. Kerr ; M. M. Kasliwal ; C. Kouveliotou ; D. Kocevski ; N. M. Law ; P. E. Nugent ; E. O. Ofek ; D. Poznanski ; R. M. Quimby ; E. Rol ; A. J. Romanowsky ; R. Sanchez-Ramirez ; S. Schulze ; N. Singh ; L. van Spaandonk ; R. L. Starling ; R. G. Strom ; J. C. Tello ; O. Vaduvescu ; P. J. Wheatley ; R. A. Wijers ; J. M. Winters ; D. Xu
American Association for the Advancement of Science (AAAS)
Published 2011Staff ViewPublication Date: 2011-06-18Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
4Latest Papers from Table of Contents or Articles in PressE. Nardini ; J. N. Reeves ; J. Gofford ; F. A. Harrison ; G. Risaliti ; V. Braito ; M. T. Costa ; G. A. Matzeu ; D. J. Walton ; E. Behar ; S. E. Boggs ; F. E. Christensen ; W. W. Craig ; C. J. Hailey ; G. Matt ; J. M. Miller ; P. T. O'Brien ; D. Stern ; T. J. Turner ; M. J. Ward
American Association for the Advancement of Science (AAAS)
Published 2015Staff ViewPublication Date: 2015-02-24Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
5Articles: DFG German National LicensesNorris, J. P. ; Barthelmy, S. D. ; Granot, J. ; Kaneko, Y. ; Kouveliotou, C. ; Markwardt, C. B. ; Mészáros, P. ; Nakar, E. ; Nousek, J. A. ; O'Brien, P. T. ; Page, M. ; Palmer, D. M. ; Parsons, A. M. ; Roming, P. W. A. ; Sakamoto, T. ; Sarazin, C. L. ; Schady, P. ; Stamatikos, M. ; Woosley, S. E. ; Gehrels, N.
[s.l.] : Nature Publishing Group
Published 2006Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Gamma-ray bursts (GRBs) are known to come in two duration classes, separated at ∼2 s. Long-duration bursts originate from star-forming regions in galaxies, have accompanying supernovae when these are near enough to observe and are probably caused by massive-star collapsars. Recent ...Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesSarazin, C. L. ; O'Brien, P. T. ; Zhang, B. ; Barbier, L. ; Barthelmy, S. D. ; Blustin, A. ; Burrows, D. N. ; Cannizzo, J. ; Cummings, J. R. ; Goad, M. ; Holland, S. T. ; Hurkett, C. P. ; Kennea, J. A. ; Levan, A. ; Markwardt, C. B. ; Mason, K. O. ; Meszaros, P. ; Page, M. ; Palmer, D. M. ; Rol, E. ; Sakamoto, T. ; Willingale, R. ; Angelini, L. ; Beardmore, A. ; Boyd, P. T.
[s.l.] : Nature Publishing Group
Published 2005Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Gamma-ray bursts (GRBs) come in two classes: long (〉 2 s), soft-spectrum bursts and short, hard events. Most progress has been made on understanding the long GRBs, which are typically observed at high redshift (z ≈ 1) and found in subluminous star-forming host galaxies. They are ...Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesChincarini, G. ; Burrows, D. N. ; Gehrels, N. ; Covino, S. ; Moretti, A. ; Romano, P. ; O'Brien, P. T. ; Sarazin, C. L. ; Kouveliotou, C. ; Goad, M. ; Vaughan, S. ; Tagliaferri, G. ; Zhang, B. ; Antonelli, L. A. ; Campana, S. ; Cummings, J. R. ; D'Avanzo, P. ; Davies, M. B. ; Giommi, P. ; Grupe, D. ; Kaneko, Y. ; Kennea, J. A. ; King, A. ; Kobayashi, S. ; Melandri, A.
[s.l.] : Nature Publishing Group
Published 2005Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Two short (〈 2 s) γ-ray bursts (GRBs) have recently been localized and fading afterglow counterparts detected. The combination of these two results left unclear the nature of the host galaxies of the bursts, because one was a star-forming dwarf, while the other was probably an ...Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesWatson, D. ; Osborne, J. P. ; Pounds, K. A. ; O'Brien, P. T. ; Short, A. D. T. ; Turner, M. J. L. ; Watson, M. G. ; Mason, K. O. ; Ehle, M. ; Schartel, N. ; Reeves, J. N.
[s.l.] : Macmillian Magazines Ltd.
Published 2002Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Now that γ-ray bursts (GRBs) have been determined to lie at cosmological distances, their isotropic burst energies are estimated to be as high as 1054 erg (ref. 2), making them the most energetic phenomena in the Universe. The nature of the progenitors ...Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesMangano, V. ; Blustin, A. J. ; Brown, P. ; Burrows, D. N. ; Chincarini, G. ; Cummings, J. R. ; Cusumano, G. ; Valle, M. Della ; Malesani, D. ; Mészáros, P. ; Nousek, J. A. ; Page, M. ; Sakamoto, T. ; Waxman, E. ; Zhang, B. ; Dai, Z. G. ; Gehrels, N. ; Immler, S. ; Marshall, F. E. ; Mason, K. O. ; Moretti, A. ; O'Brien, P. T. ; Osborne, J. P. ; Page, K. L. ; Romano, P.
[s.l.] : Nature Publishing Group
Published 2006Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Although the link between long γ-ray bursts (GRBs) and supernovae has been established, hitherto there have been no observations of the beginning of a supernova explosion and its intimate link to a GRB. In particular, we do not know how the jet that defines a γ-ray burst emerges ...Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesStaff View
ISSN: 1572-946XSource: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract Coordinated observations of variability of the continuum and the emission-line luminosities (reverberation mapping) in AGNs and quasars have fundamentally altered our understanding of the broad-line regions in active galaxies. The constraints these observations impose on the models of the BLRs have been demonstrated here by an attempt to model the BLR of NGC5548, the most intensively monitored AGN. Two models of a BLR, with one having a power law radial distribution of density and the other a gaussian radial distribution, are described and the modelled line luminosities and centroid of the line response functions are presented. A self-consistent model is presented for the change in theCiv/Lyα ratio as the continuum luminosity changes. It is shown that BLR gas must be composed of a mixture of optically thin and optically thick gas and the proportion of thick and thin gas alters with the luminosity of the ionizing continuum. The observed centroid or the lag of a line, can be a function of the continuum luminosity. The variability of the profile of theCiv line in the spectrum of NGC5548 is investigated. This profile is extremely robust and is not significantly affected by changes in the ionizing continuum. Future models of the kinematics of the BLR clouds will have to be based on very stable cloud motions and include anisotropic line emission.Type of Medium: Electronic ResourceURL: