activity
19992022
most citedVery-High-Energy Gamma Rays from a Distant Quasar: How Transparent Is the Universe?

446 citations · 8k across the 127 of their papers we have counts for

collaborators
Showing astro-phShow all

23 papers · 1 filter

astro-ph2008★ 446 cited

Very-High-Energy Gamma Rays from a Distant Quasar: How Transparent Is the Universe?

MAGIC Collaboration, J. Albert

The atmospheric Cherenkov gamma-ray telescope MAGIC, designed for a low-energy threshold, has detected very-high-energy gamma rays from a giant flare of the distant Quasi-Stellar R…

astro-ph2008★ 68 cited

New very massive stars in Cygnus OB2

Ignacio Negueruela, Amparo Marco, Artemio Herrero +1

The compact association Cygnus OB2 is known to contain a large population of massive stars, but its total mass is currently a matter of debate. While recent surveys have uncovered…

astro-ph2007★ 117 cited

The cool supergiant population of the massive young star cluster RSGC1

Ben Davies, Don F. Figer, Casey J. Law +4

We present new high-resolution near-IR spectroscopy and OH maser observations to investigate the population of cool luminous stars of the young massive Galactic cluster RSGC1. Usin…

astro-ph2007★ 194 cited

A massive cluster of Red Supergiants at the base of the Scutum-Crux arm

Ben Davies, Don F. Figer, Rolf-Peter Kudritzki +3

We report on the unprecedented Red Supergiant (RSG) population of a massive young cluster, located at the base of the Scutum-Crux Galactic arm. We identify candidate cluster RSGs b…

astro-ph2007★ 2 cited

The MAGIC Project: Contributions to ICRC 2007

J. Albert, E. Aliu, H. Anderhub +142

The MAGIC Project: Contributions to ICRC 2007, Merida, Mexico. Contents pages for the Contribution on behalf of the MAGIC Collaboration to the 30th ICRC that took place in July 200…

astro-ph2007★ 317 cited

The empirical metallicity dependence of the mass-loss rate of O- and early B-type stars

M. R. Mokiem, A. de Koter, J. S. Vink +9

[Abridged] We present a comprehensive study of the metallicity dependence of the mass-loss rates in stationary stellar winds of hot massive stars. Assuming a power-law dependence o…