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Neutral-atomic and molecular outflows are a common occurrence in galaxies, near and far. They operate over the full extent of their galaxy hosts, from the innermost regions of galactic nuclei to the outermost reaches of galaxy halos. They…

Astrophysics of Galaxies · Physics 2020-04-15 Sylvain Veilleux , Roberto Maiolino , Alberto D. Bolatto , Susanne Aalto

We report simultaneous observations of intense fluxes of quasi-trapped energetic electrons and substantial enhancements of ionospheric electron concentration (EC) at low and middle latitudes over Pacific region during geomagnetic storm on…

Space Physics · Physics 2013-01-14 A. V. Suvorova , L. -C. Tsai , A. V. Dmitriev

All theories that attempt to explain the heating of the high temperature plasma observed in the solar corona are based on short bursts of energy. The intensities and velocities measured in the cores of quiescent active regions, however, can…

Solar and Stellar Astrophysics · Physics 2015-06-05 Fana M. Mulu-Moore , Amy R. Winebarger , Harry P. Warren

Wakes behind spacecraft caused by supersonic drifting positive ions are common in plasmas and disturb in situ measurements. We review the impact of wakes on observations by the Electric Field and Wave double-probe instruments on the Cluster…

Space Physics · Physics 2021-12-13 M. André , A. I. Eriksson , Yu. V. Khotyaintsev , S. Toledo-Redondo

Galactic outflows produced by stellar feedback are known to be multiphase in nature. Both observations and simulations indicate that the material within several kpc of galactic disk mid-planes consists of warm clouds embedded within a hot…

Astrophysics of Galaxies · Physics 2020-05-06 Aditi Vijayan , Chang-Goo Kim , Lucia Armillotta , Eve C. Ostriker , Miao Li

We present the results from the study of the resolved distribution of cold molecular gas around eight young (<10^6 yr), peaked-spectrum radio galaxies. This has allowed us to trace the interplay between the radio jets and the surrounding…

Astrophysics of Galaxies · Physics 2023-03-01 Raffaella Morganti , Suma Murthy , Pierre Guillard , Tom Oosterloo , Santiago Garcia-Burillo

Atmospheric circulation patterns derived from multi-spectral remote sensing can serve as a guide for choosing a suitable entry site for a future in situ probe mission. Since the Voyager-2 flybys in the 1980s, three decades of observations…

Earth and Planetary Astrophysics · Physics 2020-03-11 Leigh N. Fletcher , Imke de Pater , Glenn S. Orton , Mark D. Hofstadter , Patrick G. J. Irwin , Michael Roman , Daniel Toledo

The composition of ions plays a crucial role for the fundamental plasma properties in the terrestrial magnetosphere. We investigate the oxygen-to-hydrogen ratio in the near-Earth magnetosphere from -10 RE<XGSE}< 10 RE. The results are based…

Earth and Planetary Astrophysics · Physics 2015-06-11 Elena A. Kronberg , Stein E. Haaland , Patrick W. Daly , Elena E. Grigorenko , Lynn Kistler , Markus Fränz , Iannis Dandouras

We study steady, radial gas outflows from galaxies in an effort to understand the way tenuous and hot gas is transported to large distances away from galaxies. In particular, we obtain solutions for outflow problems, and study the outflow…

Astrophysics · Physics 2009-10-22 Boqi Wang

Atmospheric mass-loss from Hot-jupiters can be large due to the close proximity of these planets to their host star and the strong radiation the planetary atmosphere receives. On Earth, a major contribution to the acceleration of…

Earth and Planetary Astrophysics · Physics 2015-06-05 O. Cohen , A. Glocer

We present a statistical analysis of ion distributions in magnetic reconnection jets using data from the Magnetospheric Multiscale spacecraft. Compared with the quiet plasma in which the jet propagates, we often find anisotropic and…

Space Physics · Physics 2023-10-11 L. Richard , Yu. V. Khotyaintsev , D. B. Graham , A. Vaivads , D. J. Gershman , C. T. Russell

The sensitivity of Global Navigation Satellite Systems (GNSS) receivers to ionospheric disturbances and their constant growth are nowadays resulting in an increased concern of GNSS-users about the impacts of ionospheric disturbances at…

Outflows up to 1500 km/s of atomic neutral hydrogen are detected in a growing number of radio galaxies. Outflows with similar velocities are also detected in ionized gas, suggesting a common origin for the extreme kinematics of these two…

Astrophysics · Physics 2007-05-23 R. Morganti , T. Oosterloo , C. Tadhunter

Extreme space weather events on Earth occur during intervals of strong solar wind driving. The solar wind drives plasma convection and currents in the near-Earth space environment. For low values of the driver, the Earth's response is…

Galaxy-scale outflows are nowadays observed in many active galactic nuclei (AGNs); however, their characterisation in terms of (multi-) phase nature, amount of flowing material, effects on the host galaxy, is still unsettled. In particular,…

Astrophysics of Galaxies · Physics 2017-10-25 Michele Perna , Giorgio Lanzuisi , Marcella Brusa , Giovanni Cresci , Marco Mignoli

The spatial distributions of different ion species are useful indicators for plasma sheet dynamics. In this statistical study based on 7 years of Cluster observations, we establish the spatial distributions of oxygen ions and protons at…

The distribution of Io's volcanic activity likely reflects the position and magnitude of internal tidal heating. We use new observations of Io's polar regions by the Juno spacecraft Jovian Infrared Auroral Mapper (JIRAM) to complete…

Earth and Planetary Astrophysics · Physics 2023-10-20 Ashley Gerard Davies , Jason Perry , David A. Williams , David M. Nelson

The magnetospheric substorm, which plays a crucial role in flux and energy transport across Earth's magnetosphere, features the formation of a thin, elongated current sheet in the magnetotail during its growth phase. This phase is…

Radio and X-ray emission from brown dwarfs suggest that an ionised gas and a magnetic field with a sufficient flux density must be present. We perform a reference study for late M-dwarfs, brown dwarfs and giant gas planet to identify which…

Earth and Planetary Astrophysics · Physics 2015-11-04 M. I. Rodriguez-Barrera , Ch. Helling , C. R. Stark , A. M. Rice