Results 61 to 70 of about 8,442 (193)

Cosmic X-Ray Sources-Galactic and Extragalactic.

The Astronomical Journal, 1966
Instruments carried aboard an Aerobee rocket in April 1965 provided evidence for x-ray emission from the directions of the radio galaxies Cygnus A and M-87 and from the galactic supernova remnant Cassiopeia A. A survey of the Cygnus region revealed a marked decrease in the flux of x-rays from Cygnus XR-1, which was identified in June 1964 as the second
E T, Byram, T A, Chubb, H, Friedman
openaire   +3 more sources

Computer modeling and experimental work on the astrobiological implications of the martian subsurface ionising radiation environment [PDF]

, 2008
Any microbial life extant in the top meters of the martian subsurface is likely to be held dormant for long periods of time by the current permafrost conditions.
Dartnell, Lewis R, Dartnell, L.R.
core  

Active galactic nuclei: sources for ultra high energy cosmic rays [PDF]

, 2009
Ultra high energy cosmic ray events presently show a spectrum, which we interpret here as galactic cosmic rays due to a starburst, in the radio galaxy Cen A which is pushed up in energy by the shock of a relativistic jet.
Meli, Athina, LÁ, Gergely, T, Stanev, MELI, A., P. L. BIERMANN, Becker, Julia J.K., IC, Mariş, JK, Becker, V. DE SOUZA, Souza, Vitor de, A. MELI, Biermann, Peter P.L., T. STANEV, CARAMETE, L., A, Meli, BECKER, J. K., L. GERGELY, Stanev, Todor, I. C. MARIŞ, GERGELY, L., L, Caramete, V, de Souza, STANEV, T., Gergely, László Árpád L., De Souza, Vitor, Caramete, Laurent¸iu Ioan L., J. K. BECKER, Maris, Ioana Codrina, Souza, V. de, MARIS, I. C., L. CARAMETE, PL, Biermann, BIERMANN, P. L.   +32 more
core   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Massive stars as major factories of Galactic cosmic rays [PDF]

, 2019
The identification of the main contributors to the locally observed fluxes of cosmic rays is a prime objective in the resolution of the long-standing enigma of the source of cosmic rays.
Yang, Ruizhi, Wilhelmi, E., Aharonian, Felix, Aharonian, F., Yang, R., de Oña Wilhelmi, Emma   +5 more
core   +1 more source

Physics from Time Variability of the VHE Blazar PKS 2155-304 [PDF]

, 2010
Blazars are the principal extragalactic sources of very high energy gamma-ray emission in the Universe. These objects constitute a sub-class of Active Galactic Nuclei whose emission is dominated by Doppler boosted non-thermal radiation from plasma ...
BARRES-DE-ALMEIDA, ULISSES
core  

Collisionless Shocks: Contemporary State After Three Quarters of a Century of Research

Reviews of Geophysics, Volume 64, Issue 3, September 2026.
Abstract The collisionless shock research started in the late 1950s. Since then, plenty of data have been accumulated due to the large number of missions in the heliosphere, providing in situ measurements of the fields and particles. The quality of these measurements has vastly improved, especially in the last two decades.
M. Gedalin, M. Balikhin, V. Krasnoselskikh   +2 more
wiley   +1 more source

Ultra‐Low‐L Sub‐MeV Electron Microbursts During the May 2024 Super Storm

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract During the May 2024 super storm, we identified sub‐second microburst‐type relativistic electron precipitation events at McIlwain's L∼2 $L\sim 2$ in low‐Earth orbit using the Gamma‐ray Burst Monitor (CGBM) onboard the CALorimetric Electron Telescope on the International Space Station.
Miki Kurihara, Satoshi Nakahira, Ryuho Kataoka, Yoshizumi Miyoshi, Yuto Katoh, Kazutaka Yamaoka, Yuta Kawakubo, Ken Ebisawa, Shoji Torii, Kazuhiro Yamamoto, Atsuki Shinbori, Shoya Matsuda, Yoshiya Kasahara, Fuminori Tsuchiya, Iku Shinohara, Lauren W. Blum, Alessandro Bruno   +16 more
wiley   +1 more source

Lunar‐Based Photothermal CO2 Reduction Strategy: Self‐Evolving Transient Active Interface and Band Engineering

Advanced Science, Volume 13, Issue 41, 22 July 2026.
A self‐evolving Pd/Ov‐FeTiO3 photothermal catalyst, inspired by lunar soil, enables efficient extraterrestrial CO2 conversion. The formation of transient active interfaces and oxygen vacancies extends light absorption to the infrared range and optimizes electron transfer.
Yahang Wang, Yuhuan Li, Quanxin Wang, Deng Li, Pakkin Leong, Meng Wang, Shi Feng, Runyang Mo, Xianjin Shi, Xiaohui Li, Gangqiang Zhu, Chipui Tang   +11 more
wiley   +1 more source

Galactic cosmic rays & gamma rays: a synthesis

, 1999
latex 8 pages, uses paspconf.sty, 9 figures. To appear in Proc. of the Workshop "LiBeB, Cosmic Rays and Gamma-Ray Line Astronomy", eds. R. Ramaty, E. Vangioni-Flam, M. Casse, and K. Olive, ASP Conf. Ser. (ASP, 1999).
Strong, A. W., Moskalenko, I. V.
openaire   +2 more sources