Results 51 to 60 of about 2,005,140 (156)

Alignment of the CMS silicon strip tracker during stand-alone commissioning [PDF]

open access: yes, 2009
This is the Pre-print version of the Article. The official published version of the paper can be accessed from the link below - Copyright @ 2009 IOPThe results of the CMS tracker alignment analysis are presented using the data from cosmic tracks, optical
Brom J-   +999 more
core   +1 more source

Photochemical effects of Mars‐like UV irradiation on carboxylic acids in carbonaceous chondrites and expectations for abiotic background organics on Mars

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract In the search for life on Mars, understanding the origin of preserved organics is critical. Expected sources include exogenous delivery, endogenous synthesis, and potentially life. Environmental processing by ultraviolet (UV) irradiation can alter these organics, obscuring hallmarks of their origin. To deconvolve these effects, we conducted an
D. K. Buckner   +7 more
wiley   +1 more source

Geophysics, Colorado School of Mines, Spring 2011

open access: yes, 2022
Newsletter of the Geophysics Department at Colorado School of ...

core  

Description and terrestrial ages of the Calama Area Meteorite Collection (Atacama Desert, Chile)

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract We present a comprehensive study of a meteorite collection from the Atacama Desert (Chile), the driest and most climatically stable desert in the world. This collection includes meteorites from three adjacent Dense Collection Areas (DCAs) in the northern part of the Atacama Desert: Calama, Sierra Gorda, and Chug Chug, referred to as the ...
Carine Sadaka   +9 more
wiley   +1 more source

Geophysics, Colorado School of Mines, Fall 2017

open access: yes, 2022
Newsletter of the Geophysics Department at Colorado School of ...

core  

The CMS Tracker operation and performance at the Magnet Test and Cosmic Challenge [PDF]

open access: yes, 2008
During summer 2006 a fraction of the CMS silicon strip tracker was operated in a comprehensive slice test called the Magnet Test and Cosmic Challenge (MTCC).
Broccolo, B.   +999 more
core   +1 more source

Geophysics, Colorado School of Mines, Spring 2014

open access: yes, 2022
Newsletter of the Geophysics Department at Colorado School of ...

core  

Triangulating the height of cosmic noise absorption: A method for estimating the characteristic energy of precipitating electrons [PDF]

open access: yes, 2010
Energetic electrons (tens to hundreds of keV) deposit significant energy into the D layer of the ionosphere. Riometers provide a means of monitoring this electron precipitation by measuring the associated cosmic noise absorption (CNA), but individually ...
Senior, A.   +3 more
core   +3 more sources

No Degree, No Lab, No Borders: An Independent Researcher's Journey From Yemen to Global Science

open access: yesPerspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract I grew up in Yemen with a dream to study space, but my country had no astronomy programs, no universities for astrophysics, and soon, no stable peace. This Perspective is a personal and systemic account of how I pursued planetary science from a conflict zone—with no smartphone, no home internet, no supervisor, and no institutional backing.
Fahd Ali Ahmed Abdulwahab Alfatesh
wiley   +1 more source

Empirically Estimated Electron Lifetimes in the Earth's Radiation Belts: Van Allen Probe Observations

open access: yesGeophysical Research Letters, 2020
We use measurements from NASA's Van Allen Probes to calculate the decay time constants for electrons over a wide range of energies (30 keV to 4 MeV) and L values ( L = 1.3–6.0) in the Earth's radiation belts.
S. G. Claudepierre   +5 more
doaj   +1 more source

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