Results 111 to 120 of about 881,876 (240)
Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, Volume 111, Issue 9, Page 4015-4040, 1 September 2026.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
Acceleration of Ultra-high-energy Cosmic Rays in the Kiloparsec-scale Jets of Nearby Radio Galaxies
The Astrophysical Journal LettersRadio galaxies have long been considered as potential sources of ultra-high-energy cosmic rays (UHECRs). Recent analyses of the UHECR spectrum, composition, and arrival directions indicate that the nearest radio galaxy, Centaurus A, could be linked to ...
Jie-Shuang Wang +3 more
doaj +1 more source
Environments of high and low excitation radio galaxies
Astronomy & AstrophysicsAims. Active galactic nuclei (AGNs) play a crucial role in shaping galaxy evolution through their feedback mechanisms. Low-excitation radio galaxies (LERGs) and high-excitation radio galaxies (HERGs) are thought to exhibit distinct feedback modes, and ...
Lopez C., Ponce D., Donoso E.
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The Intrinsic Sizes of Odd Radio Circles
The Astrophysical JournalA new class of sources, the so-called odd radio circles (ORCs), have been discovered by recent sensitive, large-area radio continuum surveys. The distances of these sources have so far relied on photometric redshifts of optical galaxies found at the ...
David S. N. Rupke +5 more
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Electron Shot Noise on a Current Biased Antenna
Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.Abstract The Parker Solar Probe (PSP) Fields Experiment (FIELDS) uses Radio Frequency Spectrometer (RFS) data and Quasi‐Thermal Noise Spectroscopy (QTN) to determine the temperature and density of electrons in the heliosphere. The FIELDS antennas typically operate with a negative bias current.
Winry Ember +5 more
wiley +1 more source
Radio Diagnostics Of Galaxy Interactions [PDF]
Symposium - International Astronomical Union, 1999 The Hickson Compact Groups (Hickson 1982) are relatively isolated systems of galaxies with projected separations comparable to the diameters of the galaxies themselves and are an ideal laboratory for the study of the effects of interactions on the various properties of galaxies.
openaire +1 more source
Exploring the star formation histories of galaxies [PDF]
, 1999 In this thesis, I explore the star formation histories of both spiral and elliptical galaxies. In Part 1,1 present an in-depth study of the star formation histories of spiral galaxies with a wide range of properties. Optical and near-infrared colours are
Bell, Eric Findlay, Bell, E.F.
core
Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.Abstract Saturn's Kilometric Radiation (SKR) is a powerful non‐thermal radio auroral emission produced by the Cyclotron Maser Instability (CMI), which generates waves close to the local cyclotron frequency in a highly magnetized plasma from mildly relativistic electrons.
B. Collet, L. Lamy, Y. Kasaba, N. Andre
wiley +1 more source
The Complex Multiwavelength Morphology of the Peculiar Compact Galaxy Group IC 2431
The Astrophysical JournalWe present new Chandra X-ray imaging spectroscopy of the compact galaxy group IC 2431, and compare with archival ultraviolet, optical, infrared, and radio images. IC 2431 is a starburst system containing three tidally distorted disk galaxies.
Beverly J. Smith +5 more
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The Seeding of Cosmic Ray Electrons by Cluster Radio Galaxies: A Review
GalaxiesRadio galaxies in clusters of galaxies are a prominent reservoir of magnetic fields and of non-thermal particles, which become mixed with the intracluster medium.
Franco Vazza, Andrea Botteon
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