Results 71 to 80 of about 2,085 (203)

A local interstellar spectrum for galactic electrons

, 2013
A heliopause spectrum at 122 AU from the Sun is presented for galactic electrons over an energy range from 1 MeV to 50 GeV that can be considered the lowest possible local interstellar spectrum (LIS). The focus is on the spectral shape of the LIS below 1.
Nndanganeni, R. R., Potgieter, M. S.
core   +1 more source

Solar wind He pickup ions as source of tens-of-keV/n neutral He atoms observed by the HSTOF/SOHO detector

, 2014
Context. Since 1996, during periods of low solar activity, the HSTOF instrument onboard the SOHO satellite has been measuring weak fluxes of He atoms of 28-58 keV/n (helium energetic neutral atoms - He ENA).
Czechowski, A., Grzedzielski, S., Hilchenbach, M., Swaczyna, P.   +3 more
core   +1 more source

Transient shocks beyond the heliopause

Journal of Physics: Conference Series, 2015
The heliopause is a rich, dynamic surface affected by the time-dependent solar wind. Stream interactions due to coronal mass ejections (CMEs), corotating interaction regions (CIRs), and other transient phenomena are known to merge producing global merged interaction regions (GMIRs).
R L Fermo, N V Pogorelov, L F Burlaga
openaire   +1 more source

Hydrogen wall and heliosheath Lyman-alpha absorption toward nearby stars: possible constraints on the heliospheric interface plasma flow

, 2002
In this paper, we study heliospheric Ly-$\alpha$ absorption toward nearby stars in different lines of sight. We use the Baranov-Malama model of the solar wind interaction with a two-component (charged component and H atoms) interstellar medium ...
Baranov, Baranov, Baranov, Baranov, Baranov, Baranov, Bertaux, Bertin, Bertin, Blum, Costa, Dalaudier, Dring, Fahr, Fichtner, Gruntman, Hebrard, Izmodenov, Izmodenov, Izmodenov, Izmodenov, Lallement, Lallement, Linsky, Linsky, Lipatov, Malama, Müller, Müller, Parker, Patterson, Richardson, Thomas, Vlad Izmodenov, Wang, Weller, Williams, Witte, Wood, Wood, Wood, Wood, Wood, Zank   +43 more
core   +1 more source

Filtration of Interstellar Neutral Helium by Elastic and Charge Exchange Collisions in Heliospheric Boundaries

The Astrophysical Journal, 2023
Interstellar neutral (ISN) helium atoms penetrating the heliosphere are used to find the flow velocity and temperature of the very local interstellar medium near the heliosphere.
P. Swaczyna, F. Rahmanifard, E. J. Zirnstein, J. Heerikhuisen   +3 more
doaj   +1 more source

Space science: Beyond the heliopause [PDF]

Nature, 2015
Roger D. Launius savours a masterful account, by a veteran of interplanetary space science, of the Voyager probes' mission to the giant planets.
openaire   +2 more sources

2D Kelvin–Helmholtz Instability with Anisotropic Pressure

The Astrophysical Journal
The Kelvin–Helmholtz (KH) instability occurs in multiple heliospheric (solar-wind stream interfaces, planetary magnetospheres, cometary tails, heliopause flanks) and interstellar (protoplanetary disks, relativistic jets, neutron star accretion disks ...
Shishir Biswas, Masaru Nakanotani, Dinshaw S. Balsara, Vladimir Florinski, Merav Opher   +4 more
doaj   +1 more source

A Large Magnetic Hump in the VLISM Observed by Voyager 1 in 2020–2022

The Astrophysical Journal, 2023
Voyager 1 has been moving through the very local interstellar medium (VLISM) for approximately one solar cycle, from 122.58 au on 2012/DOY 238 (August 25) to 158.5 au on 2023.0. Previously, an abrupt increase (“jump”) in the magnetic field strength B and
L. F. Burlaga, N. Pogorelov, L. K. Jian, J. Park, A. Szabo, N. F. Ness   +5 more
doaj   +1 more source

Cosmic ray anisotropies near the heliopause [PDF]

Astronomy & Astrophysics, 2014
Context. The Voyager 1 spacecraft became the first man-made probe to cross the heliopause into the local interstellar medium and measure the galactic environment, including charged particle intensities, in situ. Aims. We qualitatively explain the observed anisotropies of galactic and anomalous cosmic rays in the interstellar medium. Methods.
R. D. Strauss, H. Fichtner
openaire   +1 more source

Dissipation of the sectored heliospheric magnetic field near the heliopause: a mechanism for the generation of anomalous cosmic rays

, 2009
The recent observations of the anomalous cosmic ray (ACR) energy spectrum as Voyagers 1 and 2 crossed the heliospheric termination shock have called into question the conventional shock source of these energetic particles.
Burlaga, Cho, Fermo, Fisk, Fisk, Gosling, J. F. Drake, J. N. Chamoun, Lazarian, Lazarian, M. Opher, M. Swisdak   +11 more
core   +1 more source