Results 91 to 100 of about 1,764,603 (268)

Exoplanet Terra Incognita

, 2018
Exoplanet surface imaging, cartography and the search for exolife are the next frontiers of planetology and astrophysics. Here we present an over-view of ideas and techniques to resolve albedo features on exoplanetary surfaces.
A Carbognani, B-O Demory, C Burke, C Maccone, D Morrison, D Sirbu, DM Fluri, F Feng, F Pont, G Anglada-Escudé, H Kawahara, HA Knutson, HN Russell, IAG Snellen, IJM Crossfield, IJM Crossfield, J Harrington, J Krissansen-Totton, JC Schwartz, JL Grenfell, M Bonnefoy, M Kaasalainen, MF Sterzik, MW Buie, NB Cowan, NB Cowan, P Ingraham, R Heller, R Heller, SV Berdyugina, SV Berdyugina, SV Berdyugina, SV Berdyugina, T Karalidi, TM Evans, VR Eshleman, VS Meadows, Y Fujii   +37 more
core   +1 more source

Most Sub-Arcsecond Companions of Kepler Exoplanet Candidate Host Stars are Gravitationally Bound [PDF]

, 2014
Using the known detection limits for high-resolution imaging observations and the statistical properties of true binary and line-of-sight companions, we estimate the binary fraction of {\it Kepler} exoplanet host stars.
Ciardi, David R., Everett, Mark E., Horch, Elliott P., Howell, Steve B.   +3 more
core   +3 more sources

PACO ASDI: an algorithm for exoplanet detection and characterization in direct imaging with integral field spectrographs

Astronomy & Astrophysics, 2020
Context.Exoplanet detection and characterization by direct imaging both rely on sophisticated instruments (adaptive optics and coronagraph) and adequate data processing methods.
Olivier Flasseur, L. Denis, É. Thiébaut, M. Langlois   +3 more
semanticscholar   +1 more source

Community Voices on the Future of Radiation Belt Research: A Summary of the 2024 GEM Radiation Belt Focus Group Round‐Table Discussion

Earth and Space Science, Volume 12, Issue 12, December 2025.
Abstract Earth's radiation belts are the regions where highly energetic charged particles are trapped by Earth's magnetic field, posing significant risks to the satellites and other space‐based technologies. Understanding the dynamics of the radiation belts is critical not only for advancing fundamental plasma physics but also for predicting and ...
Hong Zhao, Lauren Blum, Aleksandr Ukhorskiy, Xiangrong Fu   +3 more
wiley   +1 more source

Bayesian Methods for Analysis and Adaptive Scheduling of Exoplanet Observations

, 2018
We describe work in progress by a collaboration of astronomers and statisticians developing a suite of Bayesian data analysis tools for extrasolar planet (exoplanet) detection, planetary orbit estimation, and adaptive scheduling of observations. Our work
Balan, Bin Liu, Black, Bretthorst, Butler, Chib, Clyde, Cumming, Cumming, David F. Chernoff, Ford, Ford, Ford, Gregory, Gregory, Haario, James O. Berger, Loredo, Loredo, Loredo, Makarov, Marcy, Merlise A. Clyde, ter Braak, Thomas J. Loredo, Tinney, Tuomi, Vogt, Wright   +28 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

Searching for Additional Planets in TESS Multiplanet Systems: Testing Empirical Models Based on Kepler Data

The Astronomical Journal
Multiplanet system architectures are frequently used to constrain possible formation and evolutionary pathways of observed exoplanets. Therefore, understanding the predictive and descriptive power of empirical exoplanetary system models is critical to ...
Emma V. Turtelboom, Jamie Dietrich, Courtney D. Dressing, Caleb K. D. Harada   +3 more
doaj   +1 more source

Inner Planetary System Gap Complexity is a Predictor of Outer Giant Planets

The Astronomical Journal, 2023
The connection between inner small planets and outer giant planets is crucial to our understanding of planet formation across a wide range of orbital separations. While Kepler provided a plethora of compact multiplanet systems at short separations (≲1 au)
Matthias Y. He, Lauren M. Weiss
doaj   +1 more source

Precision Stellar Astrophysics in the Kepler Era

, 2016
The study of fundamental properties (such as temperatures, radii, masses, and ages) and interior processes (such as convection and angular momentum transport) of stars has implications on various topics in astrophysics, ranging from the evolution of ...
Huber, Daniel
core   +1 more source

Climate Emergency and Different Ways to Fail? The Fermi Paradox, the Simulation Hypothesis, Agency and Hope

Journal for the Theory of Social Behaviour, Volume 55, Issue 4, December 2025.
ABSTRACT Humanity seems stuck on different ways to fail to meet the challenge posed by a declared climate emergency and manifest the problems of ecological breakdown. Rather than reprise these failures, we use the Fermi Paradox and simulation hypothesis to make a simple point about agency. The argument unfolds in two sections.
Jamie Morgan
wiley   +1 more source