7.1k citations
- Centre National de la Recherche ScientifiqueFR547 papers
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Showing 2011Show all
3 papers · 1 filter
astro-ph.HE2011★ 4 cited
The beaming of external Compton emission
Anne Hutter, Felix Spanier
We consider a relativistically moving blob consisting of an isotropic electron distribution that Compton-scatters photons from an external isotropic radiation field. We compute the…
astro-ph.CO2011★ 102 cited
The End of Helium Reionization at z~2.7 Inferred from Cosmic Variance in HST/COS HeII Lyman Alpha Absorption Spectra
Gábor Worseck, J. Xavier Prochaska, Matthew McQuinn +6
We report on the detection of strongly varying intergalactic HeII absorption in HST/COS spectra of two z~3 quasars. From our homogeneous analysis of the HeII absorption in these an…
astro-ph.GA2011★ 13 cited
A Sagittarius-Induced Origin for the Monoceros Ring
Leo Michel-Dansac, Mario G. Abadi, Julio F. Navarro +1
The Monoceros ring is a collection of stars in nearly-circular orbits at roughly 18 kpc from the Galactic center. It may have originated (i) as the response of the disc to perturba…