Results 51 to 60 of about 711 (153)

The Passage of the Solar System through the Edge of the Local Bubble

The Astrophysical Journal
The Sun moves through the interstellar medium (ISM) at a velocity of ∼19 pc Myr ^−1 , making the conditions outside the solar system vary with time over millions of years.
Merav Opher, Abraham Loeb, Catherine Zucker, Alyssa Goodman, Ralf Konietzka, Alexandra Z. Worden, Evan P. Economo, Jesse A. Miller, João Alves, Jonathan Grone, Marc Kornbleuth, J. E. G. Peek, Michael M. Foley   +12 more
doaj   +1 more source

New Mass-Loss Measurements from Astrospheric Lyα Absorption [PDF]

The Astrophysical Journal, 2005
Measurements of stellar mass-loss rates are used to assess how wind strength varies with coronal activity and age for solar-like stars. Mass loss generally increases with activity, but we find evidence that winds suddenly weaken at a certain activity threshold.
B. E. Wood, H.-R. Müller, G. P. Zank, J. L. Linsky, S. Redfield   +4 more
openaire   +1 more source

The Global Structure of the Heliosphere

The Astrophysical Journal
As the Sun moves through the local interstellar medium (LISM), it emits charged particles, creating the heliosphere occupied by the plasma of solar origin.
Nikolai V. Pogorelov, Federico Fraternale, Gary P. Zank, Ming Zhang   +3 more
doaj   +1 more source

Magnetic activity, high-energy radiation and variability: from young solar analogs to low-mass objects [PDF]

, 2017
Magnetic activity on cool stars expresses itself in a bewildering variety of radiative and particle output originating from magnetic regions between the photosphere and the corona.
Güdel, Manuel
core  

The Velocity Distribution of the Nearest Interstellar Gas

, 2002
The bulk flow velocity for the cluster of interstellar cloudlets within about 30 pc of the Sun is determined from optical and ultraviolet absorption line data, after omitting from the sample stars with circumstellar disks or variable emission lines and ...
Berkhuijsen E. M., Berkhuijsen E. M., Bertin P., Blaauw A., Bzowski M., Crawford I. A., Crawford I. A., Crawford I. A., Daniel E. Welty, de Geus E. J., Ferlet R., Ferlet R., Frisch P. C., Haslam C. G. T., Hebrard G., Lallement R., Lallement R., Lallement R., Lallement R., Lauren Grodnicki, Porri A., Priscilla C. Frisch, Weller C. S.   +22 more
core   +1 more source

Magnetic Trapping of Galactic Cosmic Rays in the Outer Heliosheath and Their Preferential Entry into the Heliosphere

The Astrophysical Journal
This paper examines the geometry of interstellar magnetic field lines close to the boundary of the heliosphere in the direction of the unperturbed local interstellar magnetic field, where the field lines are spread apart by the heliopause (HP).
Vladimir Florinski, Juan Alonso Guzman, Jens Kleimann, Igor Baliukin, Keyvan Ghanbari, Drew Turner, Bertalan Zieger, Jozsef Kóta, Merav Opher, Vladislav Izmodenov, Dmitry Alexashov, Joe Giacalone, John Richardson   +12 more
doaj   +1 more source

Two-jet astrosphere model: effect of azimuthal magnetic field [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
13 pages, 12 figures; accepted for publication in ...
Golikov, E. A., Izmodenov, V. V., Alexashov, D. B., Belov, N. A.   +3 more
openaire   +2 more sources

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

A Search for Lyα Emission from the Astrosphere of 40 Eridani A

The Astrophysical Journal, 2003
We report the results of Hubble Space Telescope (HST) observations of the nearby (d = 5.0 pc) K1 V star 40 Eri A, which we use to search for scattered Lyα emission surrounding the star indicative of the interaction between the stellar wind and the interstellar medium (ISM).
Brian E. Wood, Jeffrey L. Linsky, Hans‐Reinhard Muller, Gary P. Zank   +3 more
openaire   +1 more source

Lyα Absorption in a “Croissant-like” Heliosphere

The Astrophysical Journal
Ly α absorption profiles have been used to detect astrospheres and heliospheric absorption from the hydrogen wall and heliotail. Using magnetohydrodynamic models of the heliosphere, we can compare simulated to observed Ly α profiles to probe the neutral ...
Erick Powell, Merav Opher, Marc Z. Kornbleuth, Igor Baliukin, Adam T. Michael, Brian E. Wood, Vladislav Izmodenov, Gabor Toth, Valeriy Tenishev   +8 more
doaj   +1 more source