Going out with a bang: compact object collisions resulting from supernovae in binary systems (2009)
Troja, Eleonora, Wynn, Graham A., O'Brien, Paul T., Rosswog, Stephan
Binary star systems containing a neutron star or a black hole with an evolved, massive star are dynamically perturbed when the latter undergoes a supernova explosion. It is possible that the natal...
Late time observations of GRB080319B: jet break, host galaxy and accompanying supernova (2008)
Tanvir, Nial R., Rol, Evert, Levan, Andrew, Fruchter, Andrew, Granot, Jonathan, Svensson, Karl M., ...
The Swift-discovered GRB080319B was by far the most distant source ever observed at naked eye brightness, reaching a peak magnitude of 5.3 at a redshift of z=0.937. We present our late time optical...
The Dust Scattering Model Can Not Explain The Shallow X-ray Decay in GRB Afterglows (2008)
Shen, Rong-Feng, Willingale, Richard, Kumar, Pawan, O'Brien, Paul T., Evans, Phil A.
A dust scattering model was recently proposed to explain the shallow X-ray decay (plateau) observed prevalently in Gamma-Ray Burst (GRB) early afterglows. In this model the plateau is the scattered...
GRB 050505: a high-redshift burst discovered by Swift (2007)
Hurkett, Cheryl P., Osborne, Julian P., Page, Kim L., Rol, Evert, Goad, Michael R., O'Brien, Paul T., ...
We report the discovery and subsequent multi-wavelength afterglow behaviour of the high redshift (z = 4.27) Gamma Ray Burst GRB 050505. This burst is the third most distant burst, measured by...
Agnwatchcontinuummonitoringof Radio-Quiet And Radio-Loud Agn (2007)
Paul Brien, Paul T. O'brien, Karen M. Leighly
The International AGN Watch has monitored a number of radio-quiet and radio-loud Active Galactic Nuclei -- the most luminous objects in the universe. We present a review of the main observational...
Different progenitors of short hard gamma-ray bursts (2007)
Troja, Eleonora, King, Andrew R., O'Brien, Paul T., Lyons, Nicola, Cusumano, Giancarlo
We consider the spatial offsets of short hard gamma-ray bursts (SHBs) from their host galaxies. We show that all SHBs with extended duration soft emission components lie very close to their hosts. We...
GRB051022: physical parameters and extinction of a prototype dark burst (2007)
Rol, Evert, Van Der Horst, Alexander, Wiersema, Klaas, Patel, Sandeep K., Levan, Andrew, Nysewander, Melissa, ...
GRB051022 was undetected to deep limits in early optical observations, but precise astrometry from radio and X-ray showed that it most likely originated in a galaxy at z~0.8. We report radio,...
Grupe, Dirk, Schady, Patricia, Leighly, Karen M., Komossa, Stefanie, O'Brien, Paul T., Nousek, John A.
GRB Radiative Efficiencies Derived from the Swift Data: GRBs vs. XRFs, Long vs. Short (2006)
Zhang, Bing, Liang, Enwei, Page, Kim L., Grupe, Dirk, Zhang, Bin-Bin, Barthelmy, Scott D., ...
We systematically analyze the prompt emission and the early afterglow data of a sample of 31 GRBs detected by {\em Swift} before September 2005, and estimate the GRB radiative efficiency. BAT's...
The first Swift X-ray flash: the faint afterglow of XRF 050215B (2006)
Levan, Andrew J., Osborne, Julian P., Tanvir, Nial R., Page, Kim L., Rol, Evert, Zhang, B., ...
The definitive version of this paper, with enhancements, is available from http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v648n2/64894/64894.html
The early X-ray emissions from GRBs (2006)
O'Brien, Paul T., Willingale, R., Osborne, Julian P., Goad, Michael R., Page, Kim L., Vaughan, Simon, ...
The definitive version of this paper, with enhancements, is available from http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v647n2/64315/64315.html
Liang, E.W., Zhang, B., O'Brien, Paul T., Willingale, R., Angelini, Lorella, Burrows, David N., ...
The definitive version of this paper, with enhancements, is available from http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v646n1/64620/64620.html
Early multi-wavelength emission from gamma-ray bursts: from gamma-ray to X-ray (2006)
O'Brien, Paul T., Willingale, R., Osborne, Julian P., Goad, Michael R.
This is the preprint, as archived at arxiv.org, of the paper subsequently published as New Journal of Physics, 2006, 8, 121, and available from http://www.iop.org/EJ/abstract/1367-2630/8/7/121. The...
GRB 050505: a high-redshift burst discovered by Swift (2006)
Hurkett, C.P., Osborne, Julian P., Page, Kim L., Rol, Evert, Goad, Michael R., O'Brien, Paul T., ...
Also available at http://www.blackwell-synergy.com/doi/abs/10.1111/j.1365-2966.2006.10188.x. The definitive version is available at www.blackwell-synergy.com.
Swift Observations of the highly X-ray variable Narrow Line Seyfert 1 galaxy RX J0148.3-2758 (2006)
Grupe, Dirk, Leighly, Karen M., Komossa, Stefanie, Schady, Patricia, O'Brien, Paul T., Burrows, Davis N., ...
We report on Swift observations of the Narrow-Line Seyfert 1 galaxy (NLS1) RX J0148.3--2758. It was observed for 41.6 ks in 2005 May and for 15.8 ks in 2005 December. On short as well as on long...
Late-time X-ray flares during GRB afterglows: extended internal engine activity (2006)
Falcone, Abraham D., Burrows, David N., Romano, Patrizia, Kobayashi, Shiho, Lazzati, D., Zhang, B., ...
Also available via arxiv.org.
The shock break-out of GRB060218/SN2006aj (2006)
Campana, Sergio, Mangano, V., Blustin, A.J., Brown, P., Burrows, David N., Chincarini, Guido, ...
This is a preprint, as archived in arXiv.org, of the paper subsequently published as Nature, 2006, 442, pp.1008-1010 and available from...
Evidence for intrinsic absorption in the Swift X-ray afterglows (2006)
Campana, Sergio, Romano, Patrizia, Covino, S., Lazzati, D., De Luca, A., Chincarini, Guido, ...
The definitive version of this paper is available from www.edpsciences.org/aa
Swift observations of the prompt X-ray emission and afterglow from GRB050126 and GRB050219A (2006)
Goad, Michael R., Tagliaferri, Gianpiero, Page, Kim L., Moretti, Alberto, Osborne, Julian P., Kobayashi, Shiho, ...
The definitive version of this paper is available from www.edpsciences.org/aa.
Panchromatic study of GRB 060124: from precursor to afterglow (2006)
Romano, Patrizia, Campana, Sergio, Chincarini, Guido, Cummings, J.R., Cusumano, Giancarlo, Holland, S.T., ...
The definitive version of this paper is available from www.edpsciences.org/aa
The X-ray afterglow of the short gamma ray burst 050724 (2006)
Campana, Sergio, Tagliaferri, Gianpiero, Lazzati, D., Chincarini, Guido, Covino, S., Page, Kim L., ...
The definitive version of this paper is available from www.edpsciences.org/aa
X-ray flare in XRF 050406: evidence for prolonged engine activity (2006)
Romano, Patrizia, Moretti, Alberto, Banat, P.L., Burrows, David N., Campana, Sergio, Chincarini, Guido, ...
The definitive version of this paper is available from www.edpsciences.org/aa
X-ray flares in the early Swift observations of the possible naked gamma-ray burst 050421 (2006)
Godet, Olivier, Page, Kim L., Osborne, Julian P., O'Brien, Paul T., Burrows, David N., Hill, Joanne E., ...
The definitive version of this paper is available from www.edpsciences.org/aa
Swift observations of the highly X-ray variable narrow-line seyfert 1 galaxy RX J0148.3-2758 (2006)
Grupe, Dirk, Leighly, Karen M., Komossa, Stefanie, Schady, Patricia, O'Brien, Paul T., Burrows, David N., ...
The early X-ray emission from GRBs (2006)
O'Brien, Paul T., Willingale, R., Osborne, Julian P., Goad, Michael R., Page, Kim L., Vaughan, Simon A., ...
Gamma-ray bursts: Restarting the Engine (2005)
King, Andrew, O'Brien, Paul T., Goad, Michael R., Osborne, Julian, Olsson, Emma, Page, Kim
Recent gamma-ray burst observations have revealed late-time, highly energetic events which deviate from the simplest expectations of the standard fireball picture. Instead they may indicate that the...
The Connection between Ultraviolet and X-ray Outflows in AGN: the case of PDS 456 (2005)
O'Brien, Paul T., Reeves, James N., Simpson, Chris, Ward, Martin J.
High-velocity outflows from AGN are a well-known phenomena in terms of the Broad Absorption Lines seen in the UV/optical. More recently, similar, possibly related, outflows have been reported in the...
Swift XRT and VLT Observations of the Afterglow of GRB 041223 (2005)
Burrows, David N., Hill, Joanne E., Chincarini, Guido, Tagliaferri, Gianpiero, Campana, Sergio, Moretti, Alberto, ...
The Swift Gamma-Ray Burst Explorer, launched on 2004 November 20, is a multiwavelength, autonomous, rapid-slewing observatory for gamma-ray burst (GRB) astronomy. On 2004 December 23, during the...
Swift XRT observations of the breaking X-ray afterglow of GRB 050318 (2005)
Perri, M., Giommi, Paolo, Capalbi, M., Amati, L., Frontera, F., Chincarini, Guido, ...
The definitive version of this paper is available from www.edpsciences.org/aa
An unexpectedly rapid decline in the X-ray afterglow emission of long gamma-ray bursts (2005)
Tagliaferri, Gianpiero, Goad, Michael R., Chincarini, Guido, Moretti, Alberto, Campana, Sergio, Burrows, David N., ...
Gamma-ray bursts: restarting the engine (2005)
King, Andrew R., O'Brien, Paul T., Goad, Michael R., Osborne, Julian P., Ollson, E., Page, Kim L.
A short gamma-ray burst apparently associated with an elliptical galaxy at redshift 0.225 (2005)
Gehrels, Neil, Sarazin, C.L., O'Brien, Paul T., Zhang, B., Barbier, L., Barthelmy, Scott D., ...
Pounds, Kenneth A., Reeves, J.N., Page, Kim L., O'Brien, Paul T.
The definitive version of this paper, with enhancements, is available from http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v616n2/60561/60561.html
An XMM-Newton observation of the Seyfert 1 galaxy 1H 0419-577 in a extreme low state (2004)
Pounds, Kenneth A., Reeves, J.N., Page, Kim L., O'Brien, Paul T.
The definitive version of this paper is available from http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v605n2/59421/59421.html
A Very Low Luminosity X-Ray Flash: XMM-Newton Observations of GRB 031203 (2004)
Watson, D., Hjorth, J., Levan, Andrew J., Jakobsson, P., O'Brien, Paul T., Osborne, Julian P., ...
The discovery of an evolving dust scattering X-ray halo around GRB 031203 (2004)
Vaughan, Simon A., Willingale, R., O'Brien, Paul T., Osborne, Julian P., Reeves, J.N., Levan, Andrew J., ...
Evidence of a high-velocity ionized outflow in a second narrow-line quasar PG 0844+349 (2003)
Pounds, Kenneth A., King, Andrew R., Page, Kim L., O'Brien, Paul T.
Also available at http://www.blackwell-synergy.com/doi/abs/10.1111/j.1365-2966.2003.07164.x. The definitive version is available at www.blackwell-synergy.com
Pounds, Kenneth A., Reeves, J.N., King, Andrew R., Page, Kim L., O'Brien, Paul T., Turner, Martin J.L.
Also available from http://www.blackwell-synergy.com/doi/abs/10.1046/j.1365-8711.2003.07006.x. The definitive version is available from www.blackwell-synergy.com. Erratum published in Monthly Notices...
Pounds, Kenneth A., Reeves, J.N., Page, Kim L., Wynn, Graham A., O'Brien, Paul T.
Also available at http://www.blackwell-synergy.com/doi/abs/10.1046/j.1365-8711.2003.06611.x. The definitive version is available at www.blackwell-synergy.com.
Pounds, Kenneth A., Reeves, J.N., King, Andrew R., Page, Kim L., O'Brien, Paul T., Turner, Martin J.L.
The X-ray afterglows of gamma-ray bursts GRB 001025A and GRB 010220 observed with XMM-Newton (2002)
Watson, D., Reeves, J.N., Osborne, Julian P., O'Brien, Paul T., Pounds, Kenneth A., Tedds, J.A., ...
The signature of supernova ejecta in the X-ray afterglow of the gamma-ray burst 011211 (2002)
Reeves, J.N., Watson, D., Osborne, Julian P., Pounds, Kenneth A., O'Brien, Paul T., Short, A.D.T., ...
The identification of an optical counterpart to the super-Eddington X-ray source NGC 5204 X-1 (2001)
Roberts, T.P., Goad, Michael R., Ward, M.J., Warwick, R.S., O'Brien, Paul T., Lira, P., ...
Evidence for Nonlinear X-ray Variability from the Broad-line Radio Galaxy 3C 390.3 (1997)
Leighly, K. M., O'Brien, Paul T.
We present analysis of the light curve from the ROSAT HRI monitoring observations of the broad-line radio galaxy 3C 390.3. Observed every three days for about 9 months, this is the first well sampled...
X-ray Observations of the Broad-Line Radio Galaxy 3C 390.3 (1997)
Leighly, Karen M., O'Brien, Paul T., Edelson, Rick, George, Ian M., Malkan, Matthew A., Matsuoka, Masaru, ...
We present the data and preliminary analysis for a series of 90 ROSAT HRI and two ASCA observations of the broad-line radio galaxy 3C 390.3. These data were obtained during the period 1995 January 2...
AGN Watch Continuum Monitoring of Radio-quiet and Radio-loud AGN (1997)
O'Brien, Paul T., Leighly, Karen M.
The International AGN Watch has monitored a number of radio-quiet and radio-loud Active Galactic Nuclei - the most luminous objects in the universe. We present a review of the main observational...