Results 31 to 40 of about 4,597 (205)

Mercury's Exosphere as Seen by BepiColombo/PHEBUS Visible Channels During the First Two Flybys

Journal of Geophysical Research: Planets, Volume 128, Issue 12, December 2023., 2023
Abstract BepiColombo, the ESA/JAXA joint mission performed its first flyby of Mercury on 1 October 2021 and its second on 23 June 2022. PHEBUS observed the exosphere of Mercury during these flybys notably with its visible channels c404 (centered on the potassium emission line at 404 nm) and c422 (centered on the calcium emission line at 422 nm).
R. Robidel, E. Quémerais, J. Y. Chaufray, D. Koutroumpa, F. Leblanc, A. Reberac, I. Yoshikawa, K. Yoshioka, G. Murakami, O. Korablev, D. Belyaev, M. G. Pelizzo, A. J. Corso   +12 more
wiley   +1 more source

A Dust Detection Database for the Inner Heliosphere Using the Parker Solar Probe Spacecraft

The Astrophysical Journal Supplement Series, 2023
A database of in situ dust impact detections made by the Parker Solar Probe spacecraft is created to facilitate studies of interplanetary dust dynamics in the inner heliosphere.
David M. Malaspina, Alexandru Toma, Jamey R. Szalay, Marc Pulupa, Petr Pokorný, Stuart D. Bale, Keith Goetz   +6 more
doaj   +1 more source

PAWS and POCO: NIR Astrophotonic Instruments for Astronomy

Astronomische Nachrichten, Volume 344, Issue 8-9, October-November 2023., 2023
Abstract For near‐infrared ground and space‐based astronomy, compact photonic devices can replace the large bulk optical components in spectrographs, frequency combs, beam combiners, and sky subtraction filters, thus saving cost, reducing volume, weight, and power requirements.
Kalaga Madhav, Alan Günther, Eloy Hernandez, Stella Vjes̆nica, Daniel Bodenmüller, Andreas Stoll, Christer Sandin, Haydar Altuğ Yıldırım, Martin M. Roth   +8 more
wiley   +1 more source

Near-infrared Polarization Charateristics of the Zodiacal Light Observed with DIRBE/COBE

The Astrophysical Journal, 2023
We report near-infrared polarization of the zodiacal light (ZL) measured from space by the Diffuse Infrared Background Experiment (DIRBE) on board the Cosmic Background Explorer in photometric bands centered at 1.25, 2.2, and 3.5 μ m.
Kohji Takimoto, Shuji Matsuura, Kei Sano, Richard M. Feder   +3 more
doaj   +1 more source

Decadal and Annual Variations in Meteoric Flux From Ulysses, Wind, and SOFIE Observations

Journal of Geophysical Research: Space Physics, Volume 127, Issue 10, October 2022., 2022
Abstract Our solar system is filled with meteoric particles, or cosmic dust, which is either interplanetary or interstellar in origin. Interstellar dust (ISD) enters the heliosphere due to the relative motion of the sun and the interstellar flow. Interplanetary dust (IPD) comes primarily from asteroid collisions or comet sublimation, and comprises the ...
Mark E. Hervig, David Malaspina, Veerle Sterken, Lynn B. Wilson III, Silvan Hunziker, Scott M. Bailey   +5 more
wiley   +1 more source

Zodiacal Cloud Complexes [PDF]

Earth, Planets and Space, 2014
We discuss some aspects of the study of the Zodiacal cloud based on brightness observations. The discussion of optical properties as well as the spatial distribution of the dust cloud show that the description of the dust cloud as a homogeneous cloud is reasonable for the regions near the Earth orbit, but fails in the description of the dust in the ...
openaire   +2 more sources

Midnight Sun to Polar Night: A Model of Seasonal Light in the Barents Sea

Journal of Advances in Modeling Earth Systems, Volume 14, Issue 10, October 2022., 2022
Abstract Arctic marine ecosystems are strongly influenced by the extreme seasonality of light in the region. Accurate determination of light is essential for building a comprehensive understanding of the dynamics of animal and aquatic algae populations.
Stacey Connan‐McGinty, Neil S. Banas, Jørgen Berge, Finlo Cottier, Stephen Grant, Geir Johnsen, Tomasz P. Kopec, Marie Porter, David McKee   +8 more
wiley   +1 more source

SKYSURF-4: Panchromatic Hubble Space Telescope All-Sky Surface-brightness Measurement Methods and Results

The Astronomical Journal, 2023
The diffuse, unresolved sky provides most of the photons that the Hubble Space Telescope (HST) receives, yet remains poorly understood. The HST Archival Legacy program SKYSURF aims to measure the 0.2–1.6 μ m sky surface brightness (sky-SB) from over 140 ...
Rosalia O’Brien, Timothy Carleton, Rogier A. Windhorst, Rolf A. Jansen, Delondrae Carter, Scott Tompkins, Sarah Caddy, Seth H. Cohen, Haley Abate, Richard G. Arendt, Jessica Berkheimer, Annalisa Calamida, Stefano Casertano, Simon P. Driver, Connor Gelb, Zak Goisman, Norman Grogin, Daniel Henningsen, Isabela Huckabee, Scott J. Kenyon, Anton M. Koekemoer, Darby Kramer, John Mackenty, Aaron Robotham, Steven Sherman   +24 more
doaj   +1 more source

Whiting Events in a Large Peri‐Alpine Lake: Evidence of a Catchment‐Scale Process

Journal of Geophysical Research: Biogeosciences, Volume 127, Issue 4, April 2022., 2022
Abstract Whiting events are transient phenomena commonly occurring in hardwater lakes and manifesting as a turquoise coloration of surface waters during massive calcium carbonate precipitation. While biological and physico‐chemical drivers of carbonate precipitation are known, their relative contributions in controlling whiting events' timing and ...
Nicolas Escoffier, Pascal Perolo, Thibault Lambert, Janine Rüegg, Daniel Odermatt, Thierry Adatte, Torsten Vennemann, Marie‐Elodie Perga   +7 more
wiley   +1 more source

Mercury's Circumsolar Dust Ring as an Imprint of a Recent Impact

The Planetary Science Journal, 2023
A circumsolar dust ring has been recently discovered close to the orbit of Mercury. There are currently no hypotheses for the origin of this ring in the literature, so we explore four different origin scenarios here: the dust originated from (1) the ...
Petr Pokorný, Ariel N. Deutsch, Marc J. Kuchner   +2 more
doaj   +1 more source