Results 51 to 60 of about 84,873 (223)

Sensitivity analysis of gamma spectroscopy system with dual high-purity germanium detectors

He jishu, 2022
BackgroundIn rare decay experiments, for instance dark matter and neutrino experiments, rays produced by the radioavtive decay in detector material induce extra experiment background, the energy deposition would contaminate the concerned region ...
YAO Yukun, ZHANG Tao, CHENG Chen, SHEN Xun, LIU Jianglai, MENG Yue, QIAN Zhicheng, SI Lin, WANG Siguang, WU Mengmeng   +9 more
doaj   +1 more source

Vertical profiling of shock attenuation at the Rochechouart impact structure, France

Meteoritics &Planetary Science, EarlyView.
Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska, S. Alwmark, C. Alwmark, M. H. Poelchau, P. Lambert   +4 more
wiley   +1 more source

Dynamics of dark matter misalignment through the Higgs portal

Journal of High Energy Physics
A light singlet scalar field feebly coupled through the super-renormalizable Higgs portal provides a minimal and well-motivated realization of ultra-light bosonic dark matter.
Brian Batell, Akshay Ghalsasi, Mudit Rai
doaj   +1 more source

On the power divergence in quasi gluon distribution function

Journal of High Energy Physics, 2018
Recent perturbative calculation of quasi gluon distribution function at one-loop level shows the existence of extra linear ultraviolet divergences in the cut-off scheme.
Wei Wang, Shuai Zhao
doaj   +1 more source

Lectures on Astronomy, Astrophysics, and Cosmology

, 2007
This is a written version of a series of lectures aimed at undergraduate students in astrophysics/particle theory/particle experiment. We summarize the important progress made in recent years towards understanding high energy astrophysical processes and we survey the state of the art regarding the concordance model of cosmology.
openaire   +2 more sources

Near-infrared observations of type Ia supernovae: The best known standard candle for cosmology [PDF]

, 2012
We present an analysis of the Hubble diagram for 12 Type Ia supernovae (SNe Ia) observed in the near-infrared J and H bands. We select SNe exclusively from the redshift range 0.03 < z < 0.09 to reduce uncertainties coming from peculiar velocities while ...
A. Gal-Yam, Alard, Bronder, C. Lidman, Casali, Conley, Conley, D. A. Howell, D. Poznanski, D. Xu, E. Ofek, E. Y. Hsiao, Folatelli, Hodapp, Hsiao, I. Arcavi, I. M. Hook, J. Cooke, J. Mould, J. S. B. Wyithe, Jha, K. Maguire, Kasen, Krisciunas, Law, M. M. Kasliwal, M. Sullivan, Mandel, Mandel, Meikle, P. E. Nugent, Persson, Phillips, R. L. Barone-Nugent, Rau, S. B. Cenko, Smith, Sullivan, Tripp, Walker, Wood-Vasey   +40 more
core   +2 more sources

A geophysical investigation of the Roter Kamm impact crater, Namibia

Meteoritics &Planetary Science, EarlyView.
Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus, Pritam Yogeshwar, Wiebke Mörbe, Bülent Tezkan, Yajun Liu, Bufelo Lushetile, Martin Melles   +6 more
wiley   +1 more source

The Case Against Cosmology [PDF]

, 2000
It is argued that some of the recent claims for cosmology are grossly overblown. Cosmology rests on a very small database: it suffers from many fundamental difficulties as a science (if it is a science at all) whilst observations of distant phenomena are
C. Impey, G. F. R. Ellis, I. J. D. Craig, J. Condon, M. G. Mateo, M. Harwit, M. J. Disney, M. J. Disney, M. J. Disney, M. Rees, W. Hu   +10 more
core   +3 more sources

Apatite in Bennu samples indicates multiple stages of aqueous alteration

Meteoritics &Planetary Science, EarlyView.
Abstract Calcium phosphates are ubiquitous in planetary materials, including samples returned from asteroid Bennu by the OSIRIS‐REx mission. We characterized apatite [Ca5(PO4)3(F,Cl,OH)] grains in Bennu samples by scanning electron microscopy, electron microprobe analysis, and transmission electron microscopy to investigate their compositions, mineral ...
Laura B. Seifert, T. M. Erickson, L. P. Keller, J. J. Barnes, K. Thomas‐Keprta, L. Le, J. Gorce, Z. Rahman, T. J. Zega, H. C. Connolly Jr, D. S. Lauretta   +10 more
wiley   +1 more source

THE BIOLOGICAL SECTION (23 AUGUST 2024) WITHIN THE XXIV GAMOW INTERNATIONAL ASTRONOMICAL CONFERENCE “ASTRONOMY AND BEYOND: ASTROPHYSICS, COSMOLOGY AND GRAVITATION, ASTROPARTICLE PHYSICS, RADIO ASTRONOMY, ASTROBIOLOGY AND GENETICS”, HELD ON 19–23 AUGUST 2024 AT ODESA I. I. MECHNIKOV NATIONAL UNIVERSITY, ODESA CITY, UKRAINE

Odesa National University Herald. Biology
It was the sixth session of the Biological Section within the Gamow International Astronomical Conference that took place on 23 August 2024. The Biological Section was traditionally held under the title “Importance of G. Gamov’s Ideas for the Biology of the 21st Century.” This year, 39 scientists and students participated in the work of the section ...
M. Borisjuk, A. Stepanenko, G. Chen, T. Michael, E. Lem, V. Schubert, I. Schubert, Yu. O. Tynkevich, I. I. Panchuk, R. A. Volkov, P. Satpathy, M. Mirzakhmedov, H. Büchner, S. Chamas, I. Hoffie, D. S. Daghma, J. Kumlehn, Yu. A. Popovych, O. M. Blagodarova, K. S. Shkolina, S. V. Chebotar, G. Chebotar, P. Kotni, M. Oppermann, O. Yushchuk, A. Barkhatova, A. Chyzh, Y. Mast, F. Marinelli, V. Fedorenko, S. Melnyk, M. Stierhof, D. Bratiichuk, Yu. Rebets, A. Luzhetskyy, B. Ostash, V.-M. Tseduliak, O. Koshla, S. Matsumoto, Y. Ohtsubo, Y. Nagata, I. Roman, O. Gromyko, D. Zharikova, R. Sawers, C. J. Barnes, K. Snape, R. Sydor, N. Senchenko, N. Shenderovska, M. Heichenko, I. Starenka, I. Savinova, D. Semeniuk, N. Hrubiian, R. Vietrov, S. Novosolov, S. Panashchuk, A. Olkhovska, M. Trokoz, O. Hubar, Yu. Monczak, X. Li   +62 more
openaire   +3 more sources