Michael R. Goad

Broad Absorption Line Quasar catalogues with Supervised Neural Networks (2008)

Scaringi, Simone, Cottis, Christopher E., Knigge, Christian, Goad, Michael R.

We have applied a Learning Vector Quantization (LVQ) algorithm to SDSS DR5 quasar spectra in order to create a large catalogue of broad absorption line quasars (BALQSOs). We first discuss the...

The Intrinsic Fraction of Broad Absorption Line Quasars (2008)

Knigge, Christian, Scaringi, Simone, Goad, Michael R., Cottis, Christopher E.

We carefully reconsider the problem of classifying broad absorption line quasars (BALQSOs) and derive a new, unbiased estimate of the intrinsic BALQSO fraction from the SDSS DR3 QSO catalogue. We...

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...

Swift observations of the 2006 outburst of the recurrent nova RS Ophiuchi. I. Early X-ray emission from the shocked ejecta and red giant wind (2006)

Bode, M.F., O'Brien, T.J., Osborne, Julian P., Page, Kim L., Senziani, F., Skinner, G.K., ...

The definitive version of this paper is available from http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v652n1/65145/65145.html

Chandra monitoring observations of the ultraluminous X-ray source NGC 5204 X-1 (2006)

Roberts, T.P., Kilgard, R.E., Warwick, R.S., Goad, Michael R., Ward, M.J.

This is the version of the paper as archived in arXiv.org, subsequently published as Monthly Notices of the Royal Astronomical Society, 2006, 371, pp.1877-1890, available from...

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

Testing the curvature effect and internal origin of gamma-ray burst prompt emissions and X-ray flares with Swift data (2006)

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

The Swift X-ray flaring afterglow of GRB 050607 (2006)

Pagani, Claudio, Morris, David C., Kobayashi, Shiho, Sakamoto, Takanori, Falcone, Abraham D., Moretti, Alberto, ...

The definitive version of this paper is available at http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v645n2/64323/64323.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.

The Swift X-ray flaring afterglow of GRB 050607 (2006)

Pagani, Claudio, Morris, David C., Kobayashi, Shiho, Sakamoto, Takanori, Falcone, Abraham D., Moretti, Alberto, ...

The unique capability of the Swift satellite to perform a prompt and autonomous slew to a newly detected Gamma-Ray Burst (GRB) has yielded the discovery of interesting new properties of GRB X-ray...

A unified picture for gamma-ray burst prompt and X-ray afterglow emissions (2006)

Kumar, P., McMahon, E., Barthelmy, Scott D., Burrows, David N., Gehrels, Neil, Goad, Michael R., ...

Also available at http://www.blackwell-synergy.com/doi/abs/10.1111/j.1745-3933.2006.00138.x. The definitive version is available at www.blackwell-synergy.com.

The nature of the close magnetic white dwarf + probable brown dwarf binary SDSS J121209.31+013627.7 (2006)

Burleigh, Matthew R., Marsh, T.R., Gänsicke, B.T., Goad, Michael R., Dhillon, V.S., Littlefair, S.P., ...

Submitted for publication in Monthly Notices of the Royal Astronomical Society by the Royal Astronomical Society and Blackwell Publishing.

Swift and XMM-Newton observations of the dark GRB 050326 (2006)

Moretti, Alberto, De Luca, A., Malesani, D., Campana, Sergio, Tiengo, A., Cucchiara, A., ...

The definitive version of this paper is available from www.edpsciences.org/aa

A refined position catalogue of the Swift XRT afterglows (2006)

Moretti, Alberto, Perri, M., Capalbi, M., Angelini, Lorella, Hill, Joanne E., Campana, Sergio, ...

The definitive version of this paper is available from www.edpsciences.org/aa. Table 1 for this paper is available from www.edpsciences.org/aa.

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...

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...

What the Optical Recombination Lines Can Tell Us About the Broad Line Regions of Active Galactic Nuclei (2004)

Korista, Kirk T., Goad, Michael R.

We investigate the effect of a global change in the ionizing continuum level on the behavior of the strong optical broad emission-lines seen in spectra of the nuclear emission-line regions of active...

Quasar Tomography: Unification of Echo Mapping and Photoionisation Models (2002)

Horne, Keith, Korista, Kirk T, Goad, Michael R

Reverberation mapping uses time-delayed variations in photoionised emission lines to map the geometry and kinematics of emission-line gas in active galactic nuclei. In previous work, the light travel...

The Variable Diffuse Continuum Emission of Broad Line Clouds (2001)

Korista, Kirk T., Goad, Michael R.

We investigate the wavelength-dependent intensity and reverberation properties of the UV-optical diffuse continuum emission expected from broad emission line gas. The locally optimally emitting...

Locally Optimally-Emitting Clouds and the Variable Broad Emission Line Spectrum of NGC 5548 (2000)

Korista, Kirk T., Goad, Michael R.

[abridged] We test the ``locally optimally-emitting clouds'' (LOC) model against the extensive spectroscopic data base of the Seyfert~1, NGC 5548. The time-averaged, integrated-light UV broad...