Results 111 to 120 of about 6,471 (197)

Direct measurements of helium and hydrogen ion concentration and total ion density to an altitude of 940 kilometers [PDF]

Measurement of ion concentration and total ion density in exosphere using mass spectrometer and electrostatic ...
Brace, L. H., Brinton, H. C., Smith, C. R., Taylor, H. A., Jr.   +3 more
core   +1 more source

Far-ultraviolet Flares and Variability of the Young M Dwarf AU Mic: A Nondetection of Planet C in Transit at Lyα

The Astronomical Journal
Atmospheric escape’s potential to shape the exoplanet population motivates detailed observations of systems actively undergoing escape. AU Mic is a young and active M dwarf hosting two close-in transiting sub- to Neptune-sized planets. Atmospheric escape
Keighley E. Rockcliffe, Elisabeth R. Newton, Allison Youngblood, Girish M. Duvvuri, Emily A. Gilbert, Peter Plavchan, Peter Gao, Hans-R. Müller, Adina D. Feinstein, Thomas Barclay, Eric D. Lopez   +10 more
doaj   +1 more source

MESSENGER Observations of Planetary Ion Enhancements at Mercury's Northern Magnetospheric Cusp During Flux Transfer Event Showers. [PDF]

J Geophys Res Space Phys, 2022
Sun W, Slavin JA, Milillo A, Dewey RM, Orsini S, Jia X, Raines JM, Livi S, Jasinski JM, Fu S, Zhao J, Zong QG, Saito Y, Li C.   +13 more
europepmc   +1 more source

Europa’s Sodium and Potassium Exosphere during Juno’s Flyby

The Planetary Science Journal
Jupiter’s icy moon Europa is enveloped in gaseous sodium and potassium that resonantly scatter sunlight as optical emission lines. The High Resolution Echelle Spectrograph on the Keck I telescope has spatially mapped these alkalis contemporaneously with ...
Emma Lovett, Carl Schmidt, Patrick Lierle   +2 more
doaj   +1 more source

Thermodynamics of Surface-Bounded Exospheres

, 2018
Neutral exospheres of the Moon, Mercury, and several other solar system bodies consist of particles on ballistic trajectories. Here, the vertical density profile of a surface-bounded exosphere is calculated using thermodynamic averages of an ensemble of ballistic trajectories.
openaire   +2 more sources

Soft X-ray and ENA Imaging of the Earth's Dayside Magnetosphere. [PDF]

J Geophys Res Space Phys, 2021
Connor HK, Sibeck DG, Collier MR, Baliukin II, Branduardi-Raymont G, Brandt PC, Buzulukova NY, Collado-Vega YM, Escoubet CP, Fok MC, Hsieh SY, Jung J, Kameda S, Kuntz KD, Porter FS, Sembay S, Sun T, Walsh BM, Zoennchen JH.   +18 more
europepmc   +1 more source

Aerospace Environmental Challenges for Electrical Insulation and Recent Developments for Electrified Aircraft. [PDF]

Materials (Basel), 2022
Lizcano M, Williams TS, Shin EE, Santiago D, Nguyen B.   +4 more
europepmc   +1 more source

Composition changes in the lower thermosphere [PDF]

Chemical heating above polar thermosphere and formation of helium bulge during ...
Gottlieb, B., Johnson, F. S.
core   +1 more source

Understanding the Dust Environment at Mercury: From Surface to Exosphere

The Planetary Science Journal
We provide an overview of our understanding of the dust environment at Mercury and the role that dust plays in shaping the planet's surface and exosphere.
Harald Krüger, Michelle S. Thompson, Masanori Kobayashi, Valeria Mangano, Martina Moroni, Anna Milillo, Lindsay P. Keller, Sho Sasaki, Joe Zender, Deborah Domingue, Johannes Benkhoff, André Galli, François LeBlanc, Go Murakami, Menelaos Sarantos, Daniel W. Savin   +15 more
doaj   +1 more source

Energetic electron irradiations of amorphous and crystalline sulphur-bearing astrochemical ices. [PDF]

Front Chem, 2022
Mifsud DV, Herczku P, Rácz R, Rahul KK, Kovács STS, Juhász Z, Sulik B, Biri S, McCullough RW, Kaňuchová Z, Ioppolo S, Hailey PA, Mason NJ.   +12 more
europepmc   +1 more source