Results 141 to 150 of about 207,538 (259)
A Study on the Line of Sight to Galaxies Detected at Gamma-Ray Energies
The Astrophysical Journal LettersThe 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 +4 more
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The ARGO-YBJ legacy to next generation wide field-of-view experiments
EPJ Web of Conferences, 2017 The ARGO-YBJ experiment has been in stable data taking for more than 5 years at the YangBaJing Cosmic Ray Observatory (Tibet, P.R. China, 4300 m a.s.l., 606 g/cm2).
Di Sciascio Giuseppe
doaj +1 more source
Columba-Hypatia: Astronomy for Peace [PDF]
arXiv, 2018 "Columba-Hypatia: Astronomy for Peace" is a joint astronomy outreach project by GalileoMobile and the Association for Historical Dialogue and Research (AHDR) which takes place on the island of Cyprus. The project aims to inspire young people, through astronomy, to be curious about science and the cosmos, while also using astronomy as a tool for ...
arxiv
The Known and Unknown About Female Reproductive Tract Mucus Rheological Properties
BioEssays, Volume 47, Issue 6, June 2025.Mucus viscosity changes as spermatozoa travel through the female reproductive tract to the egg in humans, bovines, mice, and other mammals. These changes may aid in spermatozoa navigation. However, limited information is available on the viscoelastic properties of female reproductive tract mucus, and consistent measurement techniques are lacking ...
Luke Achinger +19 more
wiley +1 more source
The Astrophysical JournalThe blazars are one of the leading candidate sources of high-energy neutrinos. Recently, two blazars have been found to be temporally and spatially correlated with some IceCube high-energy neutrino events. The two blazars, GB6 J2113+1121 and NVSS J171822+
Xiong Jiang +4 more
doaj +1 more source
Medical Physics, Volume 52, Issue 6, Page 4330-4340, June 2025.Abstract Background Respiratory motion during the single photon emission computed tomography (SPECT) acquisition can cause blurring artifacts in the reconstructed images, leading to inaccurate estimates for activity and absorbed doses. Purpose To address the impact of respiratory motion, we utilized a new optical surface imaging (OSI) system to extract
Chenguang Li +5 more
wiley +1 more source
Search for Kink Events in Variable Fermi-LAT Blazars
The Astrophysical JournalThis study explores the detection of quasiperiodic oscillations (QPOs) in blazars as a method to identify kink events within their jets, utilizing both γ -ray and polarized light observations. Focusing on a sample of nine blazars, we analyze γ -ray light
P. Peñil +12 more
doaj +1 more source
The status of gamma-ray astronomy
, 2011 Gamma-ray studies are an essential tool in our search for the origin of cosmic rays. Instruments like the Fermi-LAT, H.E.S.S., MAGIC and VERITAS have revolutionized our understanding of the high energy Universe. This paper describes the status of the very rich field of gamma-ray astrophysics that contains a wealth of data on Galactic and extragalactic ...
openaire +3 more sources
Imaging and Spectral Fitting of Bright Gamma-Ray Sources with the COSI Balloon Payload
The Astrophysical JournalThe 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 +19 more
doaj +1 more source
Use of 3He Neutron Sensors for Planetary Penetrator Experiments
Earth and Space Science, Volume 12, Issue 6, June 2025.Abstract This paper provides a report on a test that was carried out over 20 years ago to demonstrate that two 3He gas proportional neutron sensors could survive a high‐impact penetrator test. This test was carried out as part of a risk reduction effort for a proposed mission that would send multiple penetrators to landing locations within lunar ...
David J. Lawrence +3 more
wiley +1 more source