Results 91 to 100 of about 2,261,840 (225)
Small, EarlyView.NaCl co‐doping effectively enhances the thermoelectric performance of p‐type Bi–Sb–Te (BST) alloys through simultaneous Na+ substitution at Sb sites and Cl− substitution at Te sites, inducing local lattice distortion and defect engineering. At low doping levels, carrier transport is optimized by tuning carrier concentration and suppressing antisite ...
Saurabh Thoravat +14 more
wiley +1 more source
TeV gamma-ray emission from accreting binary pulsars [PDF]
, 1990 The high-mass X-ray binary SMC X-1 has been observed during the interval 1986-1989 at a threshold γ-ray energy of 0.4 TeV using the University of Durham Mark III air Cerenkov telescope at Narrabri.
Mannings, Vincent, Mannings, V
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The Astrophysical JournalThe emergence of Galactic PeV astronomy makes photon–photon ( γγ ) absorption an increasingly important component of gamma-ray data analysis. In this work, the Galactic Photon Survival Probability (GPSP) atlas is presented as the first Galactic framework
Ekrem Oğuzhan Angüner
doaj +1 more source
ESA INTEGRAL and Cataclysmic Variables
Odessa Astronomical Publications, 2017 The satellite INTEGRAL is ESA project operating since January 2003. It is dedicated to high energy astronomy. INTEGRAL is able to detect and perform astrometry, photometry and spectroscopy of sources from X-ray to gamma-ray regime (nominal range of ...
Jan Strobl +4 more
doaj +1 more source
Bolide Light Curve Systematics from 75 Recovered Meteorites
Meteoritics &Planetary Science, EarlyView.Abstract How does the energy deposition profile (light curve), deceleration, and penetration depth in Earth's atmosphere depend on asteroid composition and meteorite type? Here, we present the light curve and velocity profile of 75 bolides from camera‐documented meteorite falls.
Peter Jenniskens +3 more
wiley +1 more source
Very high energy gamma ray observations of southern hemisphere blazars [PDF]
, 1997 This thesis is concerned with very high energy γ-ray observations of blazars observable from the southern hemisphere. The data presented were obtained using the recently deployed University of Durham Mark 6 high sensitivity Čerenkov telescope. Chapters 1
Dickinson, M.R., Dickinson, Mark R.
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Ground-based gamma-ray astronomy [PDF]
AIP Conference Proceedings, 2000 Ground-based gamma-ray astronomy has become an active astrophysical discipline with four confirmed sources of TeV gamma rays, two plerionic supernova remnants (SNRs) and two BL Lac objects (BL Lacs). An additional nine objects (one plerion, three shell-type SNRs, one X-ray binary, and four BL Lacs) have been detected but have not been confirmed by ...
openaire +2 more sources
Challenges and Opportunities for Layered Double Perovskite Solar Cells
Solar RRL, Volume 10, Issue 17, 15 September 2026.Layered lead‐free double perovskites suffer from intrinsic and extrinsic limitations that hinder high photovoltaic performance. This review identifies key challenges, including unfavorable band structures, strong self‐trapping, defect‐induced recombination, processing‐induced inhomogeneity, and device‐level mismatches.
Krishnaiah Mokurala +4 more
wiley +1 more source
The sensitivity of the Durham mk6 ground-based atmospheric cherenkov telescope to very high energy gamma-ray sources [PDF]
, 2001 The subject of this thesis is a determination of the sensitivity of the Durham Mk6 ground based Imaging Atmospheric Cherenkov Telescope (lACT), an instrument which uses the imaging atmospheric Cherenkov technique to detect Very High Energy (VHE) gamma ...
Lyons, Karl, Lyons, K.
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The attenuation of atmospheric Cerenkov photons [PDF]
, 2002 Whilst the atmosphere places a limit on the successful applications of many branches of astronomy, it becomes an invaluable tool for the detection of very high energy γ-rays. This thesis is concerned with reducing the systematic uncertainties inherent to
Daniel, Michael Kevin, Daniel, Michael
core +1 more source