Results 1 to 10 of about 50 (49)

A future interstellar probe on the dynamic heliosphere and its interaction with the very local interstellar medium: In-situ particle and fields measurements and remotely sensed ENAs

Frontiers in Astronomy and Space Sciences, 2023
The recently published Interstellar Probe (ISP) study report describes a pragmatic mission concept with a launch window that starts in 2036 and is expected to reach several hundreds of astronomical units past the heliopause within a time frame of ≥50 ...
K. Dialynas, V. J. Sterken, P. C. Brandt, L. Burlaga, D. B. Berdichevsky, D. B. Berdichevsky, R. B. Decker, S. Della Torre, R. DeMajistre, A. Galli, M. Gkioulidou, M. E. Hill, S. M. Krimigis, S. M. Krimigis, M. Kornbleuth, W. Kurth, B. Lavraud, R. McNutt, D. G. Mitchell, P. S. Mostafavi, R. Nikoukar, M. Opher, E. Provornikova, E. C. Roelof, P. G. Rancoita, J. D. Richardson, E. Roussos, J. M. Sokół, G. La Vacca, J. Westlake, T. Y. Chen   +30 more
doaj   +3 more sources

The Direction of the Flow of Interstellar Neutral H Based on Photometric Observations from SOHO/SWAN

The Astrophysical Journal, 2023
Interstellar neutral hydrogen flows into the heliosphere as a mixture of the primary and secondary populations from two somewhat different directions due to splitting occurring in the magnetized outer heliosheath.
M. Bzowski, M. A. Kubiak, M. Strumik, I. Kowalska-Leszczynska, C. Porowski, E. Quémerais   +5 more
doaj   +1 more source

Voyager Observations of Electron Densities in the Very Local Interstellar Medium

The Astrophysical Journal, 2023
The two Voyager spacecraft have now been immersed in the very local interstellar medium for several years. Both spacecraft carry a plasma wave instrument capable of detecting plasma waves that yield electron density through the determination of the ...
W. S. Kurth, L. F. Burlaga, T. Kim, N. V. Pogorelov, L. J. Granroth   +4 more
doaj   +1 more source

The Role of Electrons and Helium Atoms in Global Modeling of the Heliosphere

The Astrophysical Journal, 2023
We present a new three-dimensional, MHD-plasma/kinetic-neutrals model of the solar wind (SW) interaction with the local interstellar medium (LISM), which self-consistently includes neutral hydrogen and helium atoms.
F. Fraternale, N. V. Pogorelov, R. K. Bera   +2 more
doaj   +1 more source

Interstellar Conditions Deduced from Interstellar Neutral Helium Observed by IBEX and Global Heliosphere Modeling

The Astrophysical Journal, 2023
In situ observations of interstellar neutral (ISN) helium atoms by the IBEX-Lo instrument on board the Interstellar Boundary Explorer (IBEX) mission are used to determine the velocity and temperature of the pristine very local interstellar medium (VLISM).
P. Swaczyna, M. Bzowski, J. Heerikhuisen, M. A. Kubiak, F. Rahmanifard, E. J. Zirnstein, S. A. Fuselier, A. Galli, D. J. McComas, E. Möbius, N. A. Schwadron   +10 more
doaj   +1 more source

The Discovery of the Zeeman Effect in 38 GHz Class II Methanol Masers

The Astrophysical Journal, 2023
Magnetic fields likely play an important role in star formation, but the number of directly measured magnetic field strengths remains scarce. We observed the 38.3 and 38.5 GHz Class II methanol (CH _3 OH) maser lines toward the high-mass star-forming ...
E. Momjian, A. P. Sarma
doaj   +1 more source

Faint but Not Forgotten. I. First Results from a Search for Astrospheres around AGB Stars in the Far-ultraviolet

The Astronomical Journal, 2023
Using the GALEX archive, we have discovered extended structures around ten asymptotic giant branch (AGB) stars (out of a total 92 searched) emitting in the far-ultraviolet (FUV) band.
Raghvendra Sahai, Benjamin Stenger
doaj   +1 more source

The Low‐Energy Neutral Imager (LENI)

Journal of Geophysical Research: Space Physics, Volume 121, Issue 9, Page 8228-8236, September 2016., 2016
Abstract To achieve breakthroughs in the areas of heliospheric and magnetospheric energetic neutral atom (ENA) imaging, a new class of instruments is required. We present a high angular resolution ENA imager concept aimed at the suprathermal plasma populations with energies between 0.5 and 20 keV.
J. H. Westlake, D. G. Mitchell, P. C.‐son. Brandt, B. G. Andrews, G. Clark   +4 more
wiley   +1 more source

Voyager 1 Electron Densities in the Very Local Interstellar Medium to beyond 160 au

The Astrophysical Journal Letters
The two Voyager spacecraft have been exploring the interstellar medium beyond the heliopause since 2012 (Voyager 1) and 2018 (Voyager 2). Electron plasma oscillations and a quasi-thermal noise line at the electron plasma frequency have enabled the ...
W. S. Kurth
doaj   +1 more source

Voyager VLISM Electron Density Dataset

The Astrophysical Journal Supplement Series
This paper is a companion to an electron density dataset submitted to both the Planetary Data System and the Space Physics Data Facility for measurements by the Voyager Plasma Wave Science (PWS) instrument in the very local interstellar medium.
W. S. Kurth, L. J. Granroth, J. B. Faden
doaj   +1 more source