Results 81 to 90 of about 6,851 (202)

Characterizing Precipitation Behaviors of H− in the Martian Atmosphere

open access: yesJournal of Geophysical Research: Space Physics, Volume 129, Issue 4, April 2024.
Abstract Solar wind protons can charge exchange with the extensive hydrogen corona of Mars, resulting in a significant flux of energetic neutral atoms (ENAs). As these solar wind hydrogen ENAs precipitate into the upper atmosphere, they can experience electron attachment or detachment, resulting in populations of H− and H+, respectively, with upstream ...
Sarah Henderson   +6 more
wiley   +1 more source

Dark Matter Direct Detection with Non-Maxwellian Velocity Structure [PDF]

open access: yes, 2009
The velocity distribution function of dark matter particles is expected to show significant departures from a Maxwell-Boltzmann distribution. This can have profound effects on the predicted dark matter - nucleon scattering rates in direct detection ...
A. Katz   +33 more
core   +1 more source

Quasiparticle Diffusion in CRESST Light Detectors [PDF]

open access: yesJournal of Low Temperature Physics, 2016
CRESST-II is a direct dark matter experiment that uses scintillating calorimeters to detect WIMP-induced nuclear scatter processes. Heat and light signals are read out with tungsten transition edge sensors (TESs) that are optimized toward their sensitivity to non-thermal phonons.
G. Angloher   +11 more
openaire   +1 more source

Characterization of Regolith And Trace Economic Resources (CRATER): An Orbitrap‐based laser desorption mass spectrometry instrument for in situ exploration of the Moon

open access: yesRapid Communications in Mass Spectrometry, Volume 38, Issue 6, 30 March 2024.
Rationale Characterization of Regolith And Trace Economic Resources (CRATER), an Orbitrap™‐based laser desorption mass spectrometry instrument designed to conduct high‐precision, spatially resolved analyses of planetary materials, is capable of answering outstanding science questions about the Moon's formation and the subsequent processes that have ...
Soumya Ray   +19 more
wiley   +1 more source

Peaked Signals from Dark Matter Velocity Structures in Direct Detection Experiments

open access: yes, 2010
In direct dark matter detection experiments, conventional elastic scattering of WIMPs results in exponentially falling recoil spectra. In contrast, theories of WIMPs with excited states can lead to nuclear recoil spectra that peak at finite recoil ...
Lang, Rafael F., Weiner, Neal
core   +1 more source

Halo independent comparison of direct dark matter detection data [PDF]

open access: yes, 2012
We extend the halo-independent method of Fox, Liu, and Weiner to include energy resolution and efficiency with arbitrary energy dependence, making it more suitable for experiments to use in presenting their results. Then we compare measurements and upper
  +7 more
core   +2 more sources

Negative Lags on the Viscous Timescale in Quasar Photometry and Prospects for Detecting More with LSST

open access: yesThe Astrophysical Journal, 2023
The variability of quasar light curves can be used to study the structure of quasar accretion disks. For example, continuum reverberation mapping uses delays between variability in short and long wavelength bands ( short lags) to measure the radial ...
Amy Secunda   +4 more
doaj   +1 more source

Chasing a consistent picture for dark matter direct searches

open access: yes, 2012
In this paper we assess the present status of dark matter direct searches by means of Bayesian statistics. We consider three particle physics models for spin-independent dark matter interaction with nuclei: elastic, inelastic and isospin violating ...
Arina, Chiara
core   +1 more source

Signatures of Earth-scattering in the direct detection of Dark Matter [PDF]

open access: yes, 2017
Direct detection experiments search for the interactions of Dark Matter (DM) particles with nuclei in terrestrial detectors. But if these interactions are sufficiently strong, DM particles may scatter in the Earth, affecting their distribution in the lab.
Catena, Riccardo   +2 more
core   +5 more sources

Description of CRESST-II and CRESST-III pulse shape data

open access: yes
5 pages, 1 figure, 4 ...
Angloher, G.   +64 more
openaire   +2 more sources

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