1. Introduction: recent developments in the study of gamma-ray bursts.

    Philosophical Transactions of the Royal Society... 365(1854):1111 (2007) PMID 17293313

    Gamma-ray bursts (GRBs) are immensely powerful explosions, originating at cosmological distances, whose outbursts persist for durations ranging from milliseconds to tens of seconds or more. In these brief moments, the explosions radiate more energy than the Sun will release in its entire 10Gyr l...
  2. Gamma-ray bursts prompt emission spectrum: an analysis of a photosphere model.

    Philosophical Transactions of the Royal Society... 365(1854):1171 (2007) PMID 17293325

    A thermal radiative component is likely to accompany the first stages of the prompt emission of gamma-ray bursts (GRBs) and X-ray flashes. We analyse the effect of such a component on the observable spectrum, assuming that the observable effects are due to a dissipation process occurring below o...
  3. Introduction: recent developments in the study of gamma-ray bursts.

    Philosophical Transactions of the Royal Society... 365(1854):1111 (2007) PMID 17293313

    Gamma-ray bursts (GRBs) are immensely powerful explosions, originating at cosmological distances, whose outbursts persist for durations ranging from milliseconds to tens of seconds or more. In these brief moments, the explosions radiate more energy than the Sun will release in its entire 10Gyr l...
  4. Gamma-ray bursts prompt emission spectrum: an analysis of a photosphere model.

    Philosophical Transactions of the Royal Society... 365(1854):1171 (2007) PMID 17293325

    A thermal radiative component is likely to accompany the first stages of the prompt emission of gamma-ray bursts (GRBs) and X-ray flashes. We analyse the effect of such a component on the observable spectrum, assuming that the observable effects are due to a dissipation process occurring below o...
  5. Cosmology. Anthropic reasoning.

    Science 309(5737):1022 (2005) PMID 16099967

  6. Cosmology. Anthropic reasoning.

    Science 309(5737):1022 (2005) PMID 16099967

  7. Introduction.

    Philosophical Transactions of the Royal Society... 361(1812):2427 (2003) PMID 14667310

    It is embarrassing that 95% of the Universe is unaccounted for. Galaxies and larger-scale cosmic structures are composed mainly of "dark matter", whose nature is still unknown. Favoured candidates are weakly interacting particles that have survived from the very early Universe, but more exotic o...
  8. Introduction.

    Philosophical Transactions of the Royal Society... 361(1812):2427 (2003) PMID 14667310

    It is embarrassing that 95% of the Universe is unaccounted for. Galaxies and larger-scale cosmic structures are composed mainly of "dark matter", whose nature is still unknown. Favoured candidates are weakly interacting particles that have survived from the very early Universe, but more exotic o...
  9. Cosmology. How the cosmic dark age ended.

    Science 295(5552):51 (2002) PMID 11778028

  10. Cosmology. How the cosmic dark age ended.

    Science 295(5552):51 (2002) PMID 11778028

  11. Feeding black holes at galactic centres by capture from isothermal cusps

    New Astronomy 7(7):385 (2002)

    The capture rates of stars and dark particles onto supermassive black holes depend strongly on the spatial and kinematical distribution of the stellar and dark matter at the centre of bulges and elliptical galaxies. We here explore the possibility that all ellipticals/bulges have initially ...
  12. Feeding black holes at galactic centres by capture from isothermal cusps

    New Astronomy 7(7):385 (2002)

    The capture rates of stars and dark particles onto supermassive black holes depend strongly on the spatial and kinematical distribution of the stellar and dark matter at the centre of bulges and elliptical galaxies. We here explore the possibility that all ellipticals/bulges have initially ...
  13. ‘First light’ in the universe: what ended the ‘dark age’?

    Physics Reports 333:203 (2000)

    The universe would have been completely dark between the epoch of recombination and the development of the first non-linear structure. But at redshifts beyond 5 – perhaps even beyond 20 – stars formed within ‘subgalaxies’ and created the first heavy elements; these same systems (together pe...
  14. ‘First light’ in the universe: what ended the ‘dark age’?

    Physics Reports 333:203 (2000)

    The universe would have been completely dark between the epoch of recombination and the development of the first non-linear structure. But at redshifts beyond 5 – perhaps even beyond 20 – stars formed within ‘subgalaxies’ and created the first heavy elements; these same systems (together pe...
  15. A review of gamma ray bursts

    Nuclear Physics A 663:42c (2000)

  16. What can we learn from bursts and afterglows?

    Nuclear Physics B - Proceedings Supplements 69(1):681 (1999)

    The detection by BeppoSAX of afterglows from gamma-ray bursts has immensely boosted the subject. This paper outlines the class of model for the bursts that currently seems most promising, and addresses specifically the nature of the afterglow, and its importance as a probe of the burst phen...
  17. Surgical approaches to the sphenoid sinus.

    Journal of Otolaryngology 21(1):1 (1992) PMID 1564743

    The sphenoid sinus can be approached through the ethmoid, nasal or septal zones of the anterior wall. Case studies, fresh/fixed cadaver material and radiologic examinations, including three-dimensional CT reconstructions, were used to define the anatomic conditions governing the safest penetrati...
  18. Particle physics in astrophysics and cosmology

    Nuclear Physics B - Proceedings Supplements 16:3 (1990)

    This paper briefly outlines some topics of current interest on the interface between astrophysics/cosmology and particle physics. These include: the implications of the cosmic light element abundances; evidence for non-baryonic dark matter, and the prospects for experimental searches; cosmi...
  19. Quantitative determination of salbutamol in plasma, as either its trimethylsilyl or t-butyldimethylsilyl ether, using a stable isotope multiple ion recording technique.

    Biomedical mass spectrometry 3(4):184 (1976) PMID 963277

    Two methods are described for the determination of salbutamol in human plasma. The drug is extracted from the plasma as a salbutamol tetraphenylboron ion pair and determined by gas chromatography mass spectrometry. Trideuterio-salbutamol is used as an internal standard. In the first method an ex...