Results 61 to 70 of about 88,325 (210)

Gamma-Ray Polarimetry of Transient Sources with POLAR

, 2022
Polarization measurements of the gamma-ray component of transient sources are of great scientific interest, they are however, also highly challenging. This is due to the typical low signal to noise and the potential for significant systematic errors. Both issues are made worse by the transient nature of the events which prompt one to observe a large ...
Kole, Merlin, Sun, Jianchao
openaire   +2 more sources

An Aerial Gamma Ray Survey of Springfields and the Ribble Estuary in September 1992 [PDF]

, 1992
<p>A short aerial gamma ray survey was conducted in the vicinity of the Springfields site and Ribble Estuary from 1st-5th September 1992, to define existing background radiation levels, against which any future changes can be assessed.
Murphy, S., Sanderson, D.C.W., Tyler, A.N., University of Glasgow: Scottish Universities Research and Reactor Centre, Allyson, J.D.   +4 more
core  

An Airborne and Vehicular Gamma Survey of Greenham Common, Newbury District and Surrounding Areas [PDF]

, 1997
The airborne gamma ray survey recorded more than 40,000 scintillation spectra and 20,000 spectra from semiconductor detectors. The vehicular survey produced a further 1346 and 763 spectral sets respectively. The installation, calibration, recording and
Sanderson, D.C.W., McConville, P., University of Glasgow: Scottish Universities Research and Reactor Centre, Cresswell, A., Allyson, J.D.   +4 more
core  

Ultra-thin 3D silicon sensors for neutron detection

, 2012
We present a novel neutron detector based on an ultra-thin 3D silicon sensor with a sensitive volume only 10 µm thick. This ultra-thin active volume allows a high gamma-ray rejection, a key requirement in order to discriminate the signal coming from the ...
Garcia, Francisco, Pellegrini, Giulio, Fleta, Celeste, Lozano Fantoba, Manuel, Rodriguez, Joaquin, Quirion, David, Lozano, Manuel, Guardiola Salmerón, Consuelo, García, Francisco Alejandro, Guardiola, Consuelo, Rodríguez, José Antonio   +10 more
core   +1 more source

Imaging and Spectral Fitting of Bright Gamma-Ray Sources with the COSI Balloon Payload

The Astrophysical Journal
The Compton Spectrometer and Imager balloon payload (COSI-Balloon) is a wide field-of-view Compton gamma-ray telescope that operates in the 0.2–5 MeV bandpass.
Jarred M. Roberts, Steven Boggs, Thomas Siegert, John A. Tomsick, Marco Ajello, Peter von Ballmoos, Jacqueline Beechert, Floriane Cangemi, Savitri Gallego, Pierre Jean, Chris Karwin, Carolyn Kierans, Hadar Lazar, Alex Lowell, Israel Martinez Castellanos, Sean Pike, Clio Sleator, Yong Sheng, Hiroki Yoneda, Andreas Zoglauer   +19 more
doaj   +1 more source

An Airborne Gamma Ray Survey of Parts of SW Scotland in February 1993. Final Report [PDF]

, 1993
An airborne gamma ray survey was conducted for the Scottish Office Environment Department of coastal and inland parts of SW Scotland to define existing background levels, to locate features worthy of further attention, and to demonstrate the emergency ...
Sanderson, D., Murphy, S., Tyler, A.N., Ni Riain, S., University of Glasgow: Scottish Universities Research and Reactor Centre, Allyson, J.D.   +5 more
core  

The Fermi Gamma-ray Burst Monitor: Results from the first two years [PDF]

, 2011
In the first two years since the launch of the Fermi Observatory, the Gamma-ray Burst Monitor (GBM) has detected over 500 Gamma-Ray Bursts (GRBs), of which 18 were confidently detected by the Large Area Telescope (LAT) above 100 MeV.
BISSALDI, ELISABETTA, on behalf of the Fermi GBM Collaboration, Bissaldi, E.   +2 more
core   +1 more source

Classification of a New X-Ray Catalog of Likely Counterparts to 4FGL-DR4 Unassociated Gamma-Ray Sources Using a Neural Network

The Astrophysical Journal
Our survey of the fourth Fermi Large Area Telescope catalog (4FGL) unassociated gamma-ray source regions using the X-Ray Telescope (XRT) and Ultraviolet/Optical Telescope (UVOT) on board the Neil Gehrels Swift Observatory (Swift) provides new XRT and ...
Kyle D. Neumann, Abraham D. Falcone, Stephen DiKerby, Sierra Deppe, Elizabeth C. Ferrara, Jamie A. Kennea, Brad Cenko, Eric Grove   +7 more
doaj   +1 more source

A Study on the Line of Sight to Galaxies Detected at Gamma-Ray Energies

The Astrophysical Journal Letters
The large-scale universal structure comprises strands of dark matter and galaxies with large underdense volumes known as voids. We measure the fraction of the line of sight that intersects voids for active galactic nuclei (AGN) detected by Fermi Large ...
Amy Furniss, Josepf N. Amador, Olivier Hervet, Ollie Jackson, David A. Williams   +4 more
doaj   +1 more source

Accuracy of a Bayesian technique to estimate position and activity of orphan gamma-ray sources by mobile gamma spectrometry: Influence of imprecisions in positioning systems and computational approximations. [PDF]

PLoS One, 2022
Bukartas A, Wallin J, Finck R, Rääf C.
europepmc   +1 more source