Results 71 to 80 of about 6,517 (174)

Hot Spot Offset Variability from Magnetohydrodynamical Thermoresistive Instability in Hot Jupiters

The Astrophysical Journal
Hot Jupiter (HJ) atmospheres are possibly subject to a thermoresistive instability (TRI). Such an instability may develop as the ohmic heating increases the electrical conductivity in a positive feedback loop, which ultimately leads to a runaway of the ...
Raphaël Hardy, Paul Charbonneau, Andrew Cumming   +2 more
doaj   +1 more source

The O2 A-band in fluxes and polarization of starlight reflected by Earth-like exoplanets

, 2017
Earth-like, potentially habitable exoplanets are prime targets in the search for extraterrestrial life. Information about their atmosphere and surface can be derived by analyzing light of the parent star reflected by the planet.
Fauchez, Thomas, Rossi, Loic, Stam, Daphne M.   +2 more
core   +1 more source

Radiation Transport Through the Martian Atmosphere as a Function of the Zenith Angle

Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.
Abstract The topographic influence of the radiation environment on the Martian surface radiation is crucial for future human exploration. Topographic maps help assess radiation flux variations, aiding in hazard evaluation. Creating a global radiation map requires accounting for seasonally varying atmospheric density, heliospheric modulation, and ...
Salman Khaksari, Phillip H. Phipps, Robert F. Wimmer‐Schweingruber, Timothy J. Stubbs, Mark D. Looper, Jingnan Guo, Gabin Charpentier, Bent Ehresmann, Jan Leo Löwe, Daniel Matthiä, Donald M. Hassler, Cary Zeitlin, Sven Löffler   +12 more
wiley   +1 more source

Using near infra-red spectroscopy for characterization of transiting exoplanets

, 2015
We propose a method for observing transiting exoplanets with near-infrared high-resolution spectrometers. We aim to create a robust data analysis method for recovering atmospheric transmission spectra from transiting exoplanets over a wide wavelength ...
Aronson, Erik, Piskunov, Nikolai, Waldén, Pierre   +2 more
core   +1 more source

Evolution of Terrestrial Planetary Bodies and Implications for Habitability

Reviews of Geophysics, Volume 63, Issue 4, December 2025.
Abstract The terrestrial planetary bodies of our solar system—Mercury, Venus, Earth, and Mars—share a common origin through nebular accretion and early magma ocean differentiation, yet they diverged significantly in geological evolution, tectonic regimes, and habitability.
Peter A. Cawood, Eva E. Stüeken, Priyadarshi Chowdhury, Chris J. Hawkesworth, Jacob A. Mulder   +4 more
wiley   +1 more source

Search for giant planets in M67 I. Overview

, 2012
Precise stellar radial velocities are used to search for massive (Jupiter masses or higher) exoplanets around the stars of the open cluster M67. We aim to obtain a census of massive exoplanets in a cluster of solar metallicity and age in order to study ...
A. Brucalassi, Baranne, Baumann, Belloni, Bouchy, Bramich, Bruntt, Burke, C. Lovis, C. Melo, De Silva, Dumusque, Freeman, Gilliland, Girard, Girardi, Gonzalez, Gonzalez Hernandez, Hartman, Haywood, Hekker, Israelian, Johnson, K. Biazzo, Kjeldsen, L. Pasquini, L. R. Bedin, Latham, Laughlin, Lindegren, Lovis, M. T. Ruiz, Magic, Mathieu, Mathieu, Mayor, Mayor, Melendez, Melo, Mochejska, Mochejska, Molaro, Molaro, Montalto, Montalto, Montgomery, Nascimbeni, P. Bonifacio, Pace, Pasquini, Pasquini, Pasquini, Pasquini, Pasquini, Paulson, Paulson, Pollack, R. Saglia, Randich, Randich, S. Randich, Saar, Sanders, Sandquist, Sandquist, Sandquist, Santos, Sato, Setiawan, Street, Taylor, Tull, Van den Berg, van Saders, von Braun, Weldrake, Weldrake, Yadav, Önehag   +78 more
core   +4 more sources

Neuromorphic Computing with Memcapacitors: Advancements, Challenges, and Future Directions

Advanced Electronic Materials, Volume 11, Issue 18, November 4, 2025.
Neuromorphic computing reduces energy costs by integrating memory and processing in event‐driven architectures, achieving energy usage as low as 10–30 pJ per operation for memcapacitor‐based synapses. Memcapacitors are reviewed as strong contenders for neuromorphic computing, enhancing AI acceleration through charge‐based computations, high resistance,
Nada AbuHamra, Muhammad Umair Khan, Eman Hassan, Mahmoud Al Qutayri, Baker Mohammad   +4 more
wiley   +1 more source

Radial Velocity Prospects Current and Future: A White Paper Report prepared by the Study Analysis Group 8 for the Exoplanet Program Analysis Group (ExoPAG) [PDF]

, 2015
[Abridged] The Study Analysis Group 8 of the NASA Exoplanet Analysis Group was convened to assess the current capabilities and the future potential of the precise radial velocity (PRV) method to advance the NASA goal to "search for planetary bodies and ...
Anglada, Guillem, Blake, Cullen, Collier-Cameron, Andrew, Crepp, Justin, Dumusque, Xavier, Fischer, Debra, Furesz, Gabor, Gaudi, Scott, Haywood, Raphaëlle, Latham, Dave, Mahadevan, Suvrath, Makarov, Valeri, Marcy, Geoff, Muirhead, Philip, Plavchan, Peter, Prato, Lisa, Quirrenbach, Andreas, Stapelfeldt, Karl, Vanderburg, Andrew, White, Russel   +19 more
core   +1 more source

The changing phases of extrasolar planet CoRoT-1b

, 2009
Hot Jupiters are a class of extrasolar planet that orbit their parent stars at very short distances. Due to their close proximity, they are expected to be tidally locked, which can lead to a large temperature difference between their day and nightsides ...
Albrecht, Simon, de Mooij, Ernst J. W., Snellen, Ignas A. G.   +2 more
core   +1 more source

Mercury's Altered Magnetosphere During a Sub‐Alfvénic ICME Event: MESSENGER Observations and Inferred Asymmetric Alfvén Wing Formation From Global MHD Simulations

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract We present observations of a rare configuration of Mercury's magnetosphere in response to sub‐Alfvénic upstream conditions, driven by an interplanetary coronal mass ejection (ICME) that impacted the planet on 1 May 2013. Using data from the Mercury Surface, Space Environment, Geochemistry, and Ranging (MESSENGER) spacecraft, supported by a ...
Charles F. Bowers, Caitríona M. Jackman, Xianzhe Jia, Lina Z. Hadid, Weijie Sun, Laura A. Hayes, Ryan M. Dewey, Brandon Burkholder, Daragh M. Hollman, Sebastian Cervantes, Hans L. F. Huybrighs, Matthew J. Rutala   +11 more
wiley   +1 more source