Results 41 to 50 of about 988 (180)
The Astrophysical JournalProbing 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
THE VECTOR DIRECTION OF THE INTERSTELLAR MAGNETIC FIELD OUTSIDE THE HELIOSPHERE [PDF]
The Astrophysical Journal, 2010 Submitted to ApJ; incorporates minor referee-suggested ...
Swisdak, M. +3 more
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Space Weather, Volume 24, Issue 5, May 2026.Abstract We report new measurements of high‐energy protons ejected by the sun during the May 2024 Ganon superstorm. Our observations were made by the Neutron Spectrometer (NS) on the Psyche spacecraft, which was located at a solar distance of approximately 2 AU and a Sun‐Earth‐Probe separation angle of 75°.
Madison Liebel +3 more
wiley +1 more source
Galactic Magnetic Fields. I. Theoretical Model and Scaling Relations
The Astrophysical JournalGalactic dynamo models have generally relied on input parameters that are very challenging to constrain. We address this problem by developing a model that uses observable quantities as input: the galaxy rotation curve, the surface densities of the gas ...
Luke Chamandy +2 more
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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 +33 more
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Enhanced density and magnetic fields in interstellar OH masers [PDF]
Astronomy & Astrophysics, 2006 19 pages including online material, accepted to A& ...
Fish, Vincent L. +3 more
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Extreme Value Analysis of Solar Green‐Line Corona During the Time Interval 1939–2025
Space Weather, Volume 24, Issue 5, May 2026.Abstract Predicting the probability of extreme solar events is critical to understanding how to mitigate risks associated with space weather disasters, as their occurrence can pose a threat to life and infrastructure on Earth or in near‐Earth orbit. In the present study, extreme value theory is applied to the daily modified coronal index (MCI) for the ...
Miao Wan +6 more
wiley +1 more source
Tomographic Imaging of the Sagittarius Spiral Arm's Magnetic Field Structure
The Astrophysical JournalThe Galactic global magnetic field is thought to play a vital role in shaping Galactic structures such as spiral arms and giant molecular clouds. However, our knowledge of magnetic field structures in the Galactic plane at different distances is limited,
Yasuo Doi +18 more
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Heliosphere in a strong interstellar magnetic field
Journal of Physics: Conference Series, 2017 We present results of MHD simulations of the global structure of the heliosphere for a wide range of the interstellar magnetic field (ISMF) strengths (2-20 µG). For a strong interstellar field, the plasma flow in and around the heliosphere as well as the magnetic field draped over the heliopause have a simple structure, reminiscent of (though not ...
A Czechowski, J Grygorczuk
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Modeling the Detectability of Energetic Heliospheric Ions at Pluto During the New Horizons Flyby
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract We investigate the detectability of heliospheric helium ions at energies up to 100 keV by the New Horizons (NH) spacecraft during its flyby through Pluto's induced magnetosphere. The Pluto Energetic Particle Spectrometer Science Investigation energetic ion detector observed a reduction in their flux by an order of magnitude as the spacecraft ...
Randall T. Ruch +3 more
wiley +1 more source