We present an overview of scenarios where the observed Dark Matter (DM) abundance
consists of Feebly Interacting Massive Particles (FIMPs), produced nonthermally by the so …

Lynx, one of the four strategic mission concepts under study for the 2020 Astrophysics
Decadal Survey, provides leaps in capability over previous and planned x-ray missions and …

PSR J0740+ 6620 has a gravitational mass of 2.08±0.07 M⊙, which is the highest reliably
determined mass of any neutron star. As a result, a measurement of its radius will provide …

The eROSITA telescope array aboard the Spektrum Roentgen Gamma (SRG) satellite
began surveying the sky in December 2019, with the aim of producing all-sky X-ray source …

eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the primary
instrument on the Spectrum-Roentgen-Gamma (SRG) mission, which was successfully …

Several long-period radio transients have recently been discovered, with strongly polarized
coherent radio pulses appearing on timescales between tens to thousands of seconds,. In …

Context. Sky surveys produce enormous quantities of data on extensive regions of the sky.
The easiest way to access this information is through catalogues of standardised data …

Fast radio bursts, are astronomical radio flashes of unknown physical nature with durations
of milliseconds. Their dispersive arrival times suggest an extragalactic origin and imply radio …

Hard X-ray (≥ 10 keV) observations of active galactic nuclei (AGNs) can shed light on some
of the most obscured episodes of accretion onto supermassive black holes. The 70-month …

We present a broad-band spectral analysis of the joint XMM–Newton and Nuclear
Spectroscopic Telescope Array observational campaign of the narrow-line Seyfert 1 SWIFT …