Assuming a population of black holes (BHs) with masses in the range inferred by LIGO/Virgo from BH mergers, we use quasar microlensing observations to estimate...
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PublicationAbundance of LIGO/Virgo Black Holes from Microlensing Observations of Quasars with Reverberation Mapping Size Estimates
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NewsALLAN SANDAGE: “La materia oscura podría estar constituida por rocas”
Trabajar con Edwin Hubble y medir la constante de Hubble le han elevado al olimpo de la ciencia astronómica. Norteamericano de Iowa, donde nació en 1926...
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PublicationAlternative ideas in cosmology
Some remarkable examples of alternative cosmological theories are reviewed here, ranging from a compilation of variations on the Standard Model through the more...
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PublicationAn almost dark galaxy with the mass of the Small Magellanic Cloud
Almost dark galaxies are objects that have eluded detection by traditional surveys such as the Sloan Digital Sky Survey (SDSS). The low surface brightness of...
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PublicationAnisotropic satellite accretion on to the Local Group with HESTIA
How the cosmic web feeds haloes, and fuels galaxy formation is an open question with wide implications. This study explores the mass assembly in the Local Group...
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PublicationAnisotropy measurements of the cosmic microwave background radiation at intermediate angular scales
Galaxy formation by gravitational instability implies the presence of temperature fluctuations in the cosmic microwave background. New observations at 10.45 and...
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PublicationAppearances can be deceiving: clear signs of accretion in the seemingly ordinary Sextans dSph
We report the discovery of clear observational signs of past accretion/merger events in one of the Milky Way satellite galaxies, the Sextans dwarf spheroidal...
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NewsAstronomers observe the effect of dark matter on the evolution of the galaxies
A study led by researcher Laura Scholz, of the Instituto de Astrofísica de Canarias (IAC) has found, for the first time, observational evidence that the...
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TalkAstrophysical probes of dark matter
Dark matter makes up most of the mass of the Universe but remains mysterious. I discuss recent progress in constraining its properties by measuring its...