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 …

Recent research in the field of phosphor and scintillator materials and related detectors is
reviewed. After a historical introduction the fundamental issues are explained regarding the …

Fast radio bursts (FRBs) are flashes of unknown physical origin. The majority of FRBs have
been seen only once, although some are known to generate multiple flashes,. Many models …

We report spectroscopic and photometric follow-up of a dormant black hole (BH) candidate
from Gaia DR3. The system, which we call Gaia BH2, contains a∼ 1 M⊙ red giant and a …

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 …

Ultraluminous x-ray sources (ULXs) in nearby galaxies shine brighter than any x-ray source
in our Galaxy. ULXs are usually modeled as stellar-mass black holes (BHs) accreting at very …

The coronal activity–rotation relationship is considered to be a proxy for the underlying
stellar dynamo responsible for magnetic activity in solar and late-type stars. While this has …

We present X-ray source catalogs for the≈ 7 Ms exposure of the Chandra Deep Field-South
(CDF-S), which covers a total area of 484.2 arcmin 2. Utilizing wavdetect for initial source …

Observations of magnetars and some of the high magnetic field pulsars have shown that
their thermal luminosity is systematically higher than that of classical radio-pulsars, thus …

It is thought that neutron stars in low-mass binary systems can accrete matter and angular
momentum from the companion star and be spun-up to millisecond rotational periods …