Results 41 to 50 of about 36,797 (212)

Deciphering the “Missing Xenon Paradox” in Celestial Bodies: A Multifaceted Perspective Toward Demystifying This Enigma

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Xenon (Xe) is a heavy noble gas with intriguing chemical properties, such as having several stable isotopes and the ability to form compounds under extreme conditions. Despite the predictions based on cosmochemical models that suggest xenon should be relatively abundant in planetary reservoirs, empirical data indicate a significant depletion ...
Avinash Kumar Both, Avradip Ghosh, Chin Li Cheung   +2 more
wiley   +1 more source

A Plasma Instability Theory of Gamma-Ray Burst Emission [PDF]

, 1999
A new theory for gamma-ray burst radiation is presented. In this theory, magnetic fields and relativistic electrons are created through plasma processes arising as a relativistic shell passes through the interstellar medium.
J. J. Brainerd, Rees M. J.
core   +3 more sources

Influence of Mars Topography on Radiation Dose Detected by the Mars Science Laboratory and Assessment of Mars Surface Albedo Radiation

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract The Radiation Assessment Detector (RAD) on the Curiosity rover has been characterizing the Martian surface radiation field since 2012. The dose observed by RAD is influenced by a variety of factors, including an essential one, the terrain. After parking near Murray Buttes in September 2016 where it first detected a ∼5% decrease in dose rate ...
Jingnan Guo, Changqi Tian, Gabin Charpentier, Robert F. Wimmer‐Schweingruber, Salman Khaksarighiri, Lu Pan, Jan Leo Löwe, Bent Ehresmann, Donald M. Hassler, Cary Zeitlin, Daniel Matthiä, Thomas Berger, Günther Reitz   +12 more
wiley   +1 more source

Interstellar Polarization Survey. IV. Characterizing the Magnetic Field Strength and Turbulent Dispersion Using Optical Starlight Polarization in the Diffuse Interstellar Medium

The Astronomical Journal
Angular dispersion functions are typically used to estimate the fluctuations in polarization angle around the mean magnetic field orientation in dense regions, such as molecular clouds.
Y. Angarita, M. J. F. Versteeg, M. Haverkorn, A. Marchal, C. V. Rodrigues, A. M. Magalhães, R. Santos-Lima, Koji S. Kawabata   +7 more
doaj   +1 more source

An observational test for correlations between cosmic rays and magnetic fields

, 2013
We derive the magnitude of fluctuations in total synchrotron intensity in the Milky Way and M33, from both observations and theory under various assumption about the relation between cosmic rays and interstellar magnetic fields.
Abdo, Andrew Fletcher, Anvar Shukurov, Arbutina, Arshakian, Banday, Banday, Beck, Beck, Beck, Beck, Beck, Berezinskii, Beuermann, Bridle, Burbidge, Burbidge, Burn, Carilli, Casse, Chi, Christensson, Chyży, Dagkesamanskii, Fatemeh Tabatabaei, Fletcher, Galtier, Gent, Getmantsev, Giacalone, Goldreich, Haslam, Haverkorn, Hoernes, Houde, Kuznetsov, La Porta, Laing, Laura La Porta, Lawson, Lazarian, Lithwick, Longair, Malik, Mao, Mills, Monin, Moss, Ohno, Oppermann, Orienti, Padoan, Parker, Parker, Parker, Pohl, Rainer Beck, Rand, Readhead, Rodion Stepanov, Roger, Rogstad, Ruzmaikin, Ruzmaikin, Scheuer, Schlickeiser, Scott, Shukurov, Slish, Snodin, Sokoloff, Stepanov, Stepanov, Stil, Sveshnikov, Tabatabaei, Tabatabaei, Tabatabaei, Tabatabaei, Volegova, Wilkin, Williams   +81 more
core   +1 more source

The Galactic distribution of magnetic fields in molecular clouds and HII regions [PDF]

, 2006
{Magnetic fields exist on all scales in our Galaxy. There is a controversy about whether the magnetic fields in molecular clouds are preserved from the permeated magnetic fields in the interstellar medium (ISM) during cloud formation. We investigate this
Han, J. L., Zhang, J. S.
core   +3 more sources

Mirror Mode Mediated EMIC Wave Generation in the Magnetosheath

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Electromagnetic ion cyclotron (EMIC) waves and mirror modes (MMs), both driven by ion temperature anisotropy, are commonly observed in planetary magnetosheaths. Conventional explanations for their co‐occurrence are largely based on linear instability theory in proton–electron plasmas, which requires comparable growth rates for the EMIC and MM ...
Yifan Wu, Chen Shi, Xiaoman Liu, Lei Dai, Jinsong Zhao, Xin Tao   +5 more
wiley   +1 more source

The Simons Observatory: Galactic Science Goals and Forecasts

The Astrophysical Journal, 2022
Observing in six frequency bands from 27 to 280 GHz over a large sky area, the Simons Observatory (SO) is poised to address many questions in Galactic astrophysics in addition to its principal cosmological goals.
Brandon S. Hensley, Susan E. Clark, Valentina Fanfani, Nicoletta Krachmalnicoff, Giulio Fabbian, Davide Poletti, Giuseppe Puglisi, Gabriele Coppi, Jacob Nibauer, Roman Gerasimov, Nicholas Galitzki, Steve K. Choi, Peter C. Ashton, Carlo Baccigalupi, Eric Baxter, Blakesley Burkhart, Erminia Calabrese, Jens Chluba, Josquin Errard, Andrei V. Frolov, Carlos Hervías-Caimapo, Kevin M. Huffenberger, Bradley R. Johnson, Baptiste Jost, Brian Keating, Heather McCarrick, Federico Nati, Mayuri Sathyanarayana Rao, Alexander van Engelen, Samantha Walker, Kevin Wolz, Zhilei Xu, Ningfeng Zhu, Andrea Zonca   +33 more
doaj   +1 more source

Interstellar extinction and polarization -- A spheroidal dust grain approach perspective

, 2010
We extend and investigate the spheroidal model of interstellar dust grains used to simultaneously interpret the observed interstellar extinction and polarization curves.
Anderson, Bessell, Carnochan, Clayton, Corradi, Coyne, Cutri, Das, Davis, Davis, Dobashi, Draine, Draine, Draine, Draine, Draine, Ducati, Fitzpatrick, Genova, Goodman, Gordon, Greenberg, Greenberg, Gupta, H. K. Das, Hanson, Hildebrand, Hong, Iatì, Il'in, Jones, Kim, Kim, Krełowski, Laor, Larson, Lasue, Lazarian, Lee, Li, Li, Li, Li, Li, Mamajek, Martin, Martin, Martin, Mathis, Mathis, Mathis, Mermilliod, Min, Monet, Moreno, N. V. Voshchinnikov, North, Onaka, Penprase, Platais, Rogers, Rouleau, Serkowski, Skiff, Snow, Snow, Sofia, Stark, Straizys, V. B. Il'in, Vaidya, Valencic, Vallée, Vallée, Voshchinnikov, Voshchinnikov, Voshchinnikov, Voshchinnikov, Voshchinnikov, Voshchinnikov, Voshchinnikov, Wegner, Weingartner, Welsh, Whittet, Wilking, Wilking, Wolf, Zubko, Zubko   +89 more
core   +1 more source

Characterizing the Signals and Backgrounds in a Low Earth Orbiting Cherenkov Detector, and Background Mitigation Strategies

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Cherenkov detectors have been used in space for decades to measure Galactic Cosmic Rays (GCRs), Solar Energetic Particles (SEPs) and trapped particles. We present proof‐of‐concept GRAS/Geant4 simulations to both show that a cubic fused silica Cherenkov detector with SiPM in LEO has a good sensitivity to SEP and GCR protons as a function of cut‐
C. S. W. Davis, F. Lei, K. Ryden, C. Dyer, G. Santin, P. Jiggens, M. Heil   +6 more
wiley   +1 more source