New constraints on primordial black holes abundance from femtolensing of gamma-ray bursts
Dark matter is one of the most challenging open problems in cosmology and particle physics. Although …
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Living Review on "Foundations of Black Hole Accretion Disk Theory" by 
The discovery a 2 solar mass neutron star (pulsar J1614-2230) created a puzzle for nuclear …
The nearest neighbourhood of the Milky Way is populated by dwarf galaxies containing large amount of …
Blazars are highly variable, powerful sources of radiation that show spectacular outbursts. These flares are observed …
Strong and broad emission lines are the most characteristic properties of active galaxies. They allowed Maarten …
Millisecond pulsars are very fast rotating (over one hundred revolutions per second) neutron stars – a …
The inauguration of the H.E.S.S. II telescope took place on the HESS site in Namibia …
In the recent paper '
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