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Feeding black holes at galactic centres by capture from isothermal cusps
HongSheng Zhao, Martin G. Haehnelt, Martin J. Rees
We estimate the rate at which stars are captured by supermassive black holes (BHs) in the centres of bulges and elliptical galaxies assuming that these initially had an isothermal…
Radio Foregrounds for the 21cm Tomography of the Neutral Intergalactic Medium at High Redshifts
Tiziana Di Matteo, Rosalba Perna, Tom Abel +1
Absorption or emission against the cosmic microwave background radiation (CMB) may be observed in the redshifted 21cm line if the spin temperature of the neutral intergalactic medi…
Do globular clusters time the Universe?
Oleg Y. Gnedin, Ofer Lahav, Martin J. Rees
Estimating the age of the Universe is an old problem. Rapid progress in observational cosmology in recent years has led to more accurate values of the fundamental parameters. The c…
Piecing together the big picture
Martin J. Rees
This article (which appeared with illustrations) was the astrophysics/cosmology contribution to the historical series ``Pathways of Discovery'' which appeared in ``Science'' during…
Concluding Perspective
Martin J. Rees
This contribution to the concluding session at IAU Symposium 205 offered comments on some current controversies, including the scientific status of the ''multiverse'' concept and o…
Extended Lyman Alpha Emission Around Young Quasars: a Constraint on Galaxy Formation
Zoltan Haiman, Martin J. Rees
The early stage in the formation of a galaxy inevitably involves a spatially extended distribution of infalling, cold gas. If a central luminous quasar turned on during this phase,…