Results 51 to 60 of about 7,600 (227)

Adapted Empirical Modeling of Near‐Sun Solar‐Wind Speeds for Use in Ensemble Forecasts

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Solar wind science and forecasting relies on empirical relations between modeled coronal magnetic‐field structure—particularly flux‐tube expansion and distance to coronal hole boundary—and solar‐wind speed. There is lots of uncertainty in these relations, creating large uncertainties in the inner‐boundary conditions to heliospheric models ...
N. O. Edward‐Inatimi, M. J. Owens, L. Barnard, M. Lang, H. Turner, M. Marsh, S. Gonzi, A. Yeates   +7 more
wiley   +1 more source

3D pressure-corrected ballistic extrapolation of solar wind speed in the inner heliosphere

Journal of Space Weather and Space Climate
Solar wind parameters at different locations in the inner heliosphere can be estimated using various solar wind extrapolation methods. The simple ballistic method extrapolates solar wind parameters from the point of measurement to a chosen heliospheric ...
Timar Aniko, Opitz Andrea, Nemeth Zoltan, Bebesi Zsofia, Biro Nikolett, Facskó Gábor, Koban Gergely, Madar Akos   +7 more
doaj   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, Volume 111, Issue 9, Page 4015-4040, 1 September 2026.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

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   +1 more source

Electron Shot Noise on a Current Biased Antenna

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract The Parker Solar Probe (PSP) Fields Experiment (FIELDS) uses Radio Frequency Spectrometer (RFS) data and Quasi‐Thermal Noise Spectroscopy (QTN) to determine the temperature and density of electrons in the heliosphere. The FIELDS antennas typically operate with a negative bias current.
Winry Ember, Marc Pulupa, Mihailo Martinović, John Bonnell, Mingzhe Liu, Stuart D. Bale   +5 more
wiley   +1 more source

Heliosphere Lithograph [PDF]

, 2008
This lithograph introduces users to the fact that the Solar System has an interstellar boundary called the heliosphere. It includes an interactive activity.
Lindsay Bartolone
core  

Cosmic-Ray Diffusion Coefficients throughout the Inner Heliosphere from a Global Solar Wind Simulation

, 2017
We use a three-dimensional magnetohydrodynamic simulation of the solar wind to calculate cosmic-ray diffusion coefficients throughout the inner heliosphere (2R⊙ - 3au).
Ruffolo, D., Subedi, P., Usmanov, A. V., Parashar, T. N., Chhiber, R., Goldstein, Melvyn, Matthaeus, W. H.   +6 more
core   +1 more source

Signatures of Reconnection and a Split Heliospheric Tail in High-energy Energetic Neutral Atoms

The Astrophysical Journal
The shape of the heliosphere, regarded as comet-like since the 1960s, has recently been the subject of intense debate in the last decade. There is disagreement as to whether the heliospheric tail extends to ∼10,000 au in a comet-like shape or if it is ...
M. Kornbleuth, M. Opher, J. F. Drake, M. Swisdak, Zhiyu Yin, K. Dialynas, Y. Chen, J. Giacalone, J. M. Sokół, M. Gkioulidou, I. Baliukin, V. Izmodenov, G. P. Zank   +12 more
doaj   +1 more source

SQUARE2: Spacecraft in QUAdrature for Solar Exploration—A Mission Concept for Synergetic Observations of the Sun and Heliosphere

Frontiers in Astronomy and Space Sciences, 2022
SQUARE2 is the acronym for Spacecraft in QUAdrature for solaR Exploration, and is a mission concept for multi-instrumental two-point observations of the Sun and its environment. It stems from the need to have two probes that are systematically in orbital
D. Telloni
doaj   +1 more source

Near‐Earth Cosmic Ray Modulation Index ϕ and Neutron Monitor Cutoff Rigidities at Hourly Cadence: Toward an Improved Monitoring of Solar‐Terrestrial Radiation Environment, Space Weather, and Space Climate

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Cosmic rays (CRs) are energetic particles originating from galactic and extragalactic sources. When arriving into the solar system and the Sun's heliosphere, they are diverted and modulated by the magnetic activity of the Sun. This modulation can be quantified by the modulation parameter ϕ $\phi $ determined with the Force‐field approximation (
Pauli Väisänen, Nicholas Larsen, Sergey Koldobskiy, Markus Similä, David Pelosi, Miguel Orcinha   +5 more
wiley   +1 more source