Results 51 to 60 of about 37,251 (259)

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

Approximation of Daily AMS‐02 Spectra With Machine Learning Methods

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract Almost three thousand daily AMS‐02 proton spectra from 2011 to 2019 offer the most precise and extensive data set of cosmic ray spectra covering a wide energy range. As such, they offer a unique opportunity to test machine learning algorithms for approximating cosmic ray proton spectra based on the inputs usually available to solar modulation ...
Martin Nguyen, Pavol Bobík, Ján Genči
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

Measuring interstellar magnetic fields by radio synchrotron emission [PDF]

, 2008
Radio synchrotron emission, its polarization and its Faraday rotation are powerful tools to study the strength and structure of interstellar magnetic fields. The total intensity traces the strength and distribution of total magnetic fields.
Battaner, Beck, Beck, Beck, Beck, Beck, Berkhuijsen, Brentjens, Chyży, Chyży, de Avillez, de Jong, Dumke, Elstner, Fletcher, Han, Heiles, Hoernes, Johnston-Hollitt, Klein, Krause, Krause, Lisenfeld, Lisenfeld, Men, Moss, Nieten, Niklas, Patrikeev, Rainer Beck, Soida, Stepanov, Sun, Tabatabaei, Tabatabaei, Tabatabaei, Walsh, Wolleben   +37 more
core   +1 more source

Relevance of Murchison Widefield Array Interplanetary Scintillation Observations to Heliospheric Transient Catalogs

Space Weather, Volume 23, Issue 12, December 2025.
Abstract We have conducted a comprehensive comparison of interplanetary scintillation (IPS) observations taken by the Murchison Widefield Array (MWA) with several heliospheric transient event catalogs, over a time period of 7 months during solar minimum.
A. Waszewski, J. S. Morgan, M. C. M. Cheung, R. Ekers, E. Samara, S. Majumdar, R. Chhetri, N. D. R. Bhat, M. Johnston‐Hollitt   +8 more
wiley   +1 more source

Using numerical models of bow shocks to investigate the circumstellar medium of massive stars

, 2014
Many massive stars travel through the interstellar medium at supersonic speeds. As a result they form bow shocks at the interface between the stellar wind.
Cox, Nick, Decin, Leen, Meliani, Zakaria, van Marle, Allard Jan   +3 more
core   +3 more sources

STEREO REleASE+: Adding Robustness to Solar Proton Event Forecasting in the Heliosphere by Means of Automated Recognition of Type‐III Radio Bursts

Space Weather, Volume 23, Issue 12, December 2025.
Abstract This work reports on the real‐time implementation of a local solar proton event forecasting system at the Solar Terrestrial Relations Observatory—Ahead (STEREO‐A) spacecraft, namely STEREO REleASE+. The forecasting uses the finding that relativistic electrons provide the “earliest indication” that a solar particle event has started, arriving ...
Arik Posner, Olga Ε. Malandraki, Kostas Tziotziou, Michalis Karavolos, Henrik Dröge, Bernd Heber, Patrick Kühl, Lefteris Tsipis   +7 more
wiley   +1 more source

Science Opportunities for IMAP-Lo Observations of Interstellar Neutral Hydrogen and Deuterium during a Maximum of Solar Activity

The Astrophysical Journal Supplement Series
Direct-sampling observations of interstellar neutral gas, including hydrogen and deuterium, have been performed for more than one cycle of solar activity by IBEX.
M. A. Kubiak, M. Bzowski, E. Möbius, N. A. Schwadron   +3 more
doaj   +1 more source

Tracing Magnetic Fields with the Gradient Technique: Spatial Filtering Effect and Use of Interferometers

The Astrophysical Journal
Probing magnetic fields in astrophysical environments is both important and challenging. The Gradient Technique (GT) is a new tool for tracing magnetic fields, rooted in the properties of magnetohydrodynamic (MHD) turbulence and turbulent magnetic ...
Yue Hu, A. Lazarian
doaj   +1 more source

SOFIA and ALMA Investigate Magnetic Fields and Gas Structures in Massive Star Formation: The Case of the Masquerading Monster in BYF 73

The Astrophysical Journal, 2023
We present Stratospheric Observatory For Infrared Astronomy (SOFIA) + Atacama Large Millimeter/submillimeter Array (ALMA) continuum and spectral-line polarization data on the massive molecular cloud BYF 73, revealing important details about the magnetic ...
Peter J. Barnes, Stuart D. Ryder, Giles Novak, Richard M. Crutcher, Laura M. Fissel, Rebecca L. Pitts, William J. Schap III   +6 more
doaj   +1 more source