Results 21 to 30 of about 588 (209)

Using Lyman-α to probe the interior and edges of the heliosphere

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Understanding the role of neutral atoms in the heliospheric interface (between the bow shock and heliopause) is critical to identifying dynamics within our local bubble.
Majd Mayyasi   +9 more
doaj   +1 more source

A POROUS, LAYERED HELIOPAUSE [PDF]

open access: yesThe Astrophysical Journal, 2013
7 pages, 4 ...
Swisdak, M., Drake, J. F., Opher, M.
openaire   +2 more sources

On the Vitality, or Lack Thereof, in Heliospheric and Coronal Physics

open access: yesPerspectives of Earth and Space Scientists, Volume 4, Issue 1, December 2023., 2023
Abstract Heliospheric physics is the study of all phenomena in the solar wind, which carves out the heliosphere from the local interstellar medium. Coronal physics is the study of all phenomena in the solar corona, which creates the supersonic wind and all disturbances and variations contained therein.
Len A. Fisk
wiley   +1 more source

Ensemble Forecasts of Solar Wind Connectivity to 1 Rs Using ADAPT‐WSA

open access: yesSpace Weather, Volume 21, Issue 10, October 2023., 2023
Abstract The solar wind which arrives at any location in the solar system is, in principle, relatable to the outflow of solar plasma from a single source location. This source location, itself usually being part of a larger coronal hole, is traceable to 1 RS along the Sun's magnetic field, in which the entire path from 1 RS to a location in the ...
D. E. da Silva   +3 more
wiley   +1 more source

Living With Cosmic Radiation

open access: yesPerspectives of Earth and Space Scientists, Volume 3, Issue 1, December 2022., 2022
Abstract The last two decades of cosmic ray research have been eventful, to say the least. The Voyager spacecraft explored the outer‐most regions of the heliosphere and eventually left our local astrosphere to explore the galaxy. At the same time, the Parker Solar Probe spacecraft, amongst many other exciting recent missions, is exploring the inner ...
R. Du Toit Strauss
wiley   +1 more source

Complex burial histories of Apollo 12 basaltic soil grains derived from cosmogenic noble gases: Implications for local regolith evolution and future in situ investigations

open access: yesMeteoritics &Planetary Science, Volume 57, Issue 3, Page 603-634, March 2022., 2022
Abstract We report the concentrations and isotope ratios of light noble gases (He, Ne, Ar) in 10 small basalt fragments derived from lunar regolith soils at the Apollo 12 landing site. We use cosmic ray exposure (CRE) and shielding condition histories to consider their geological context.
Mark C. Nottingham   +7 more
wiley   +1 more source

1I/‘Oumuamua as an N2 Ice Fragment of an exo‐Pluto Surface: I. Size and Compositional Constraints

open access: yesJournal of Geophysical Research: Planets, Volume 126, Issue 5, May 2021., 2021
Abstract The origin of the interstellar object 1I/‘Oumuamua has defied explanation. We perform calculations of the non‐gravitational acceleration that would be experienced by bodies composed of a range of different ices and demonstrate that a body composed of N2 ice would satisfy the available constraints on the non‐gravitational acceleration, size ...
Alan P. Jackson, Steven J. Desch
wiley   +1 more source

Technology requirements of exploration beyond Neptune by solar sail propulsion [PDF]

open access: yes, 2010
This paper provides a set of requirements for the technology development of a solar sail propelled Interstellar Heliopause Probe mission. The mission is placed in the context of other outer solar systems missions, ranging from a Kuiper Belt mission ...
Macdonald, Malcolm   +8 more
core   +1 more source

Reconnection at the Heliopause: Comparing the Voyager 1 and 2 Heliopause Crossings

open access: yesJournal of Physics: Conference Series, 2020
Abstract Voyager 1 and 2 observed very different boundary layers adjacent to their respective heliopause crossings. Voyager 1 observed a very thick boundary layer in the inner heliosheath while Voyager 2 observed a very thin boundary layer.
Stephen A. Fuselier   +3 more
openaire   +1 more source

Unified Picture of the Local Interstellar Magnetic Field from Voyager and IBEX

open access: yesThe Astrophysical Journal Letters, 2023
Prior to the Voyagers’ heliopause crossings, models and the community expected the magnetic field to show major rotations across the boundary. Surprisingly, the field showed no significant change in direction from the heliospheric Parker Spiral at either
J. S. Rankin   +4 more
doaj   +1 more source

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