Results 51 to 60 of about 7,225,990 (222)

Concept of a Double Tilted Rowland Spectrograph for X-Rays

open access: yesThe Astrophysical Journal
High-resolution spectroscopy in soft X-rays (
Hans Moritz Günther   +3 more
doaj   +1 more source

Observable Signature of Merging Stellar-mass Black Holes in Active Galactic Nuclei

open access: yesThe Astrophysical Journal, 2023
The origin of stellar-mass black hole mergers discovered through gravitational waves is being widely debated. Mergers in the disks of active galactic nuclei (AGNs) represent a promising source of origin, with possible observational clues in the ...
Hiromichi Tagawa   +4 more
doaj   +1 more source

Variably shock‐compacted chondrites: Deformation–thermal histories, large differences in mineral deformation response, and implications for lithification

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Eight different H, L, and LL chondrites with 11 lithologies were studied and show good evidence for progressive shock effects and compaction. In weakly shocked chondrites (Baszkόwka, Bjurböle, Saratov, NWA 7298 Lithology A and C), silicates were dominantly fractured, troilite and metal were more deformed than olivine and fluidized, and ...
Alex M. Ruzicka   +5 more
wiley   +1 more source

A low-cost X-ray-transparent experimental cell for synchrotron-based X-ray microtomography studies under geological reservoir conditions [PDF]

open access: yes, 2014
A new modular X-ray-transparent experimental cell enables tomographic investigations of fluid rock interaction under natural reservoir conditions (confining pressure up to 20 MPa, pore fluid pressure up to 15 MPa, temperature ranging from 296 to 473 K ...
Zhu, Wenlu   +13 more
core   +1 more source

X-ray spectroscopy of accreting black holes

open access: yes, 2014
Measuring black hole spin has become a key topic in astrophysics, and recent focus on the spin powering of jets in X-ray binaries has heightened the need for accurate measurements of spin.
Plant, Daniel
core   +1 more source

Detecting Exoplanet Transits with the Next Generation of X-Ray Telescopes

open access: yesThe Astronomical Journal
Detecting exoplanet transits at X-ray wavelengths would provide a window into the effects of high-energy irradiation on the upper atmospheres of planets.
Raven Cilley   +2 more
doaj   +1 more source

The Rise of Viet Nam's Solar Panel Industry: Inputs, FDI and Spillovers

open access: yesThe World Economy, EarlyView.
ABSTRACT We document how foreign firms and inputs have shaped the development of Viet Nam's solar panel industry. We use firm‐to‐firm transaction data from Panjiva as well as firm‐level data from the Vietnamese Enterprise Survey to trace solar panel value chains.
Meng Yu Ngov   +3 more
wiley   +1 more source

Lynx X-Ray Observatory: an overview [PDF]

open access: yesJournal of Astronomical Telescopes, Instruments, and Systems, 2019
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 provides synergistic observations in the 2030s to a multitude of space- and ground-based observatories across all wavelengths.
Jessica A. Gaskin   +30 more
openaire   +1 more source

Challenging the Forward Shock Model with the 80 Ms Follow up of the X-ray Afterglow of Gamma-Ray Burst 130427A

open access: yesGalaxies, 2017
GRB 130427A was the most luminous gamma-ray burst detected in the last 30 years. With an isotropic energy output of 8.5 × 10 53 erg and redshift of 0.34, it combined very high energetics with a relative proximity to Earth in an unprecedented ...
Massimiliano De Pasquale   +14 more
doaj   +1 more source

The Telescope Calibration of the Imaging X-Ray Polarimetry Explorer

open access: yesThe Astronomical Journal
Fifty years after the very first sounding rocket measurement of cosmic X-ray polarization, the Imaging X-ray Polarimetry Explorer (IXPE) mission has effectively opened a new window into the X-ray sky.
Brian D. Ramsey   +29 more
doaj   +1 more source

Home - About - Disclaimer - Privacy