Search

Results: 2391
Intrinsic Bulk Quantum Oscillations in a Bulk Unconventional Insulator SmB6.
The finding of bulk quantum oscillations in the Kondo insulator SmB6 proved a considerable surprise. Subsequent measurements of bulk quantum oscillations in other correlated insulators including YbB12 lent support to our...
Published by:
An ultraluminous X-ray source powered by an accreting neutron star.
The majority of ultraluminous X-ray sources are point sources that are spatially offset from the nuclei of nearby galaxies and whose X-ray luminosities exceed the theoretical maximum for spherical infall (the Eddington limit)...
Published by:
Printable Perovskite Diodes for Broad-Spectrum Multienergy X-Ray Detection.
Multienergy X-ray detection is critical to effectively differentiate materials in a variety of diagnostic radiology and nondestructive testing applications. Silicon and selenium X-ray detectors are the most common for...
Published by:
The Accuracy and Validity of the Simplified Pairs Method of Comparative Judgement in Highly Structured Papers
Comparative judgement (CJ) is often said to be more suitable for judging exam questions inviting extended responses, as it is easier for judges to make holistic judgements on a small number of large, extended tasks than...
Published by:
Cosmological distances with general-relativistic ray tracing
Hayley J Macpherson
Mar 07, 2023
Abstract In this work we present the first results from a new ray-tracing tool to calculate cosmological distances in the context of fully nonlinear general relativity. We use...
Published by:
Dynamic structure elucidation of chemical reactivity by laser pulses and X-ray probes

Visualising chemical reactions by X-ray methods is a tantalising prospect. New light sources provide the prospect for studying atomic, electronic and energy transfers accompanying chemical change by X-ray spectroscopy and...

Published by:
Searching for axion-like particles with X-ray polarimeters
F Day, S Krippendorf
Sep 18, 2018
X-ray telescopes are an exceptional tool for searching for new fundamental physics. In particular, X-ray observations have already placed world-leading bounds on the interaction between photons and axion-like particles (ALPs)....
Published by:
A long-lived neutron star merger remnant in GW170817
Multimessenger observations of GW170817 have not conclusively established whether the merger remnant is a black hole (BH) or a neutron star (NS). We show that a long-lived magnetized NS with a poloidal field B ≈ 1012 G is fully...
Published by:
The First High-contrast Images of X-Ray Binaries
Abstract X-ray binaries provide exceptional laboratories for understanding the physics of matter under the most extreme conditions. Until recently, there were few, if any...
Published by:
A long-lived neutron star merger remnant in GW170817
Multimessenger observations of GW170817 have not conclusively established whether the merger remnant is a black hole (BH) or a neutron star (NS). We show that a long-lived magnetized NS with a poloidal field B ≈ 1012 G is fully...
Published by:
Relativistic X-Ray Reverberation from Super-Eddington Accretion Flow
LL Thomsen, L Dai, E Kara, C Reynolds
Feb 02, 2022
X-ray reverberation is a powerful technique which maps out the structure of the inner regions of accretion disks around black holes using the echoes of the coronal emission reflected by the disk. While the theory of X-ray...
Published by:
The hyperluminous X‐ray source population
We have recently published a catalog of 1843 candidate ultraluminous X‐ray sources (ULXs). This is the largest catalog of ULXs to date and was built by cross‐correlating recent serendipitous source catalogs from the XMM‐Newton...
Published by:
Super-Eddington accretion on to the neutron star NGC7793 P13
We present a detailed, broad-band X-ray spectral analysis of the ultraluminous X-ray source (ULX) pulsar NGC 7793 P13, a known super-Eddington source, utilizing data from the XMM–Newton, NuSTAR and Chandra observatories. The...
Published by:
Radio flares from gamma-ray bursts
We present predictions of centimeter and millimeter radio emission from reverse shocks in the early afterglows of gamma-ray bursts with the goal of determining their detectability with current and future radio facilities. Using...
Published by:
Ab initio nonrigid X-ray nanotomography
Abstract: Reaching the full potential of X-ray nanotomography, in particular for biological samples, is limited by many factors, of which one of the most serious is radiation damage. Although sample deformation caused by...
Published by:
Ab initio nonrigid X-ray nanotomography.
Reaching the full potential of X-ray nanotomography, in particular for biological samples, is limited by many factors, of which one of the most serious is radiation damage. Although sample deformation caused by radiation damage...
Published by:
Dynamic structure elucidation of chemical reactivity by laser pulses and X-ray probes

Visualising chemical reactions by X-ray methods is a tantalising prospect. New light sources provide the prospect for studying atomic, electronic and energy transfers accompanying chemical change by X-ray spectroscopy and...

Published by:
Radio flares from gamma-ray bursts
We present predictions of centimeter and millimeter radio emission from reverse shocks in the early afterglows of gamma-ray bursts with the goal of determining their detectability with current and future radio facilities. Using...
Published by:
The X-ray counterpart to the gravitational wave event GW 170817
A long-standing paradigm in astrophysics is that collisions—or mergers—of two neutron stars form highly relativistic and collimated outflows (jets) that power γ-ray bursts of short (less than two seconds) duration1,2,3. The...
Published by:
The X-ray counterpart to the gravitational wave event GW 170817
A long-standing paradigm in astrophysics is that collisions—or mergers—of two neutron stars form highly relativistic and collimated outflows (jets) that power γ-ray bursts of short (less than two seconds) duration1,2,3. The...
Published by:
The Black Hole Candidate Swift J1728.9–3613 and the Supernova Remnant G351.9–0.9
A number of neutron stars have been observed within the remnants of the core-collapse supernova explosions that created them. In contrast, black holes are not yet clearly associated with supernova remnants (SNRs). Indeed, some...

|<

<

1

2

3

4

5

>

>|