Results 161 to 170 of about 17,365 (298)

Examination of the X-ray spectrum of the SNR 0509-67.5

open access: yes, 2009
We discuss XMM-Newton observations of the supernova remnant 0509-67.5 in the Large Magellanic Cloud. EPIC and RGS data were studied extensively using SPEX spectral software package.
Blustin, A.   +6 more
core  

Autogenic Shoreline Migration and Its Effect on the Storage of Carbon in Marginal Marine Successions

open access: yesAGU Advances, Volume 7, Issue 3, June 2026.
Abstract The accumulation of organic matter (OM) near shorelines, known as blue carbon, is a key sink in the global carbon cycle. This accumulation is influenced by elevation relative to sea level of the delta‐top, which changes through the movement of shorelines with time.
Jose R. Silvestre   +8 more
wiley   +1 more source

Ultrahigh-energy gamma-ray emission associated with black hole-jet systems. [PDF]

open access: yesNatl Sci Rev
Cao Z   +316 more
europepmc   +1 more source

High Energy Astrophysics Research and Programmatic Support

open access: yes, 1997
This report reviews activities performed by members of the USRA contract team during the six months of the reporting period and projected activities during the coming six months.
Angelini, L.
core  

First Results of a New Inversion Tool for Thermospheric Neutral Mass Density Computations During Severe Geomagnetic Storms

open access: yesAGU Advances, Volume 7, Issue 3, June 2026.
Abstract In Low Earth Orbit (LEO), atmospheric drag is the dominant source of trajectory prediction error below approximately 700 km altitude, primarily due to inaccuracies in thermospheric density models. This work presents a method for temporally deconvolving Energy Dissipation Rates (EDRs) to produce single‐satellite density estimates, which can be ...
S. Mutschler   +6 more
wiley   +1 more source

High Energy Astrophysics Research and Programmatic Support

open access: yes, 1998
This report reviews activities performed by members of the USRA contract team during the six months of the reporting period and projected activities during the coming six months.
Angelini, Lorella
core  

Widespread Impact‐Induced Crustal Permeability on the Early Earth

open access: yesAGU Advances, Volume 7, Issue 3, June 2026.
Abstract The early Earth (i.e., Archean and Hadean Eons, 2.5–4.0 and 4.0–4.5 Ga, respectively) experienced frequent cosmic bombardment. Impacts have been shown to stimulate crustal alteration, for instance via hydrothermal systems active for up to millions of years post‐impact.
A. M. Alexander   +2 more
wiley   +1 more source

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