168 citations · 1.4k across the 42 of their papers we have counts for
42 papers
Discovering and Characterising Exoplanets and Ultracool Dwarfs with the Square Kilometre Array
Robert D. Kavanagh, Juan B. Climent, Philippe Zarka +14
The majority of the Solar System planets are sources of bright radio emission, driven by energetic electrons trapped within each planet's magnetic field. Detection of this emission…
White Paper on Phototrophic Biosignatures: Research Priorities for the Search for Life on Other Worlds
Nancy Y. Kiang, Christopher Gisriel, Robert E. Blankenship +32
Photosynthesis is of prime interest in the telescopic search for life beyond the Solar System, because, on Earth, oxygenic photosynthesis produces two strong "biosignatures," globa…
GREX-PLUS Science Book
PLUS Science Team, Akio K. Inoue, Yuichi Harikane +28
GREX-PLUS (Galaxy Reionization EXplorer and PLanetary Universe Spectrometer) is a mission candidate for a JAXA's strategic L-class mission to be launched in the 2030s. Its primary…
Revealing the dynamics of magnetosphere, atmosphere, and interior of solar system objects with the Square Kilometre Array
Tomoki Kimura, Yuka Fujii, Hajime Kita +3
Bodies such as planets, moons, and asteroids in our solar system are the brightest objects in the low-frequency radio astronomy at 10 GHz. The low-frequency radio emissi…
Community Report from the Biosignatures Standards of Evidence Workshop
Victoria Meadows, Heather Graham, Victor Abrahamsson +72
The search for life beyond the Earth is the overarching goal of the NASA Astrobiology Program, and it underpins the science of missions that explore the environments of Solar Syste…
Unveiling non-gray surface of cloudy exoplanets: the influence of wavelength-dependent surface albedo and cloud scattering properties on retrieval solutions
Fei Wang, Yuka Fujii, Jinping He
Direct-imaging spectra hold rich information about a planet's atmosphere and surface, and several space-based missions aiming at such observations will become a reality in the near…
Superrotation of Titan's stratosphere driven by the radiative heating of the haze layer
Motoki Sumi, Shin-ichi Takehiro, Wataru Ohfuchi +2
Titan's stratosphere has been observed in a superrotation state, where the atmosphere rotates many times faster than the surface does. Another characteristics of Titan's atmosphere…
Densified pupil spectrograph as high-precision radial velocimetry: From direct measurement of the Universe's expansion history to characterization of nearby habitable planet candidates
Taro Matsuo, Thomas P. Greene, Mahdi Qezlou +4
The direct measurement of the Universe's expansion history and the search for terrestrial planets in habitable zones around solar-type stars require extremely high-precision radial…
Detecting Atmospheric Molecules of Temperate Terrestrial Exoplanets using High-Resolution Spectroscopy in the Mid Infrared Domain
Yuka Fujii, Taro Matsuo
Motivated by the development of high-dispersion spectrographs in the mid-infrared (MIR) range, we study their application to the atmospheric characterization of nearby non-transiti…
Microlensed Radio Emission from Exoplanets
Yuta Shiohira, Yuka Terada, Den Mukuno +2
In this paper, we investigate the detectability of radio emission from exoplanets, especially hot Jupiters, which are magnified by gravitational microlensing. Because hot Jupiters…
Effects of a Binary Companion Star on Habitability of Tidally Locked Planets around an M-type Host Star
Ayaka Okuya, Yuka Fujii, Shigeru Ida
Planets in the "Habitable Zones" around M-type stars are important targets for characterization in future observations. Due to tidal-locking in synchronous spin-orbit rotations, th…
A Statistical Comparative Planetology Approach to Maximize the Scientific Return of Future Exoplanet Characterization Efforts
Jade H. Checlair, Dorian S. Abbot, Robert J. Webber +37
Provided that sufficient resources are deployed, we can look forward to an extraordinary future in which we will characterize potentially habitable planets. Until now, we have had…
The Importance of 3D General Circulation Models for Characterizing the Climate and Habitability of Terrestrial Extrasolar Planets
Eric T. Wolf, Ravi Kopparapu, Vladimir Airapetian +27
While recently discovered exotic new planet-types have both challenged our imaginations and broadened our knowledge of planetary system workings, perhaps the most compelling object…
Habitable zone predictions and how to test them
Ramses M. Ramirez, Dorian S. Abbot, Yuka Fujii +11
The habitable zone (HZ) is the region around a star(s) where standing bodies of water could exist on the surface of a rocky planet. The classical HZ definition makes a number of as…
Detecting Ocean Glint on Exoplanets Using Multiphase Mapping
Jacob Lustig-Yaeger, Victoria S. Meadows, Guadalupe Tovar Mendoza +4
Rotational mapping and glint are two proposed methods to directly detect liquid water on the surface of habitable exoplanets. However, false positives for both methods may prevent…
Albedos, Equilibrium Temperatures, and Surface Temperatures of Habitable Planets
Anthony D. Del Genio, Nancy Y. Kiang, Michael J. Way +8
The potential habitability of known exoplanets is often categorized by a nominal equilibrium temperature assuming a Bond albedo of either 0.3, similar to Earth, or 0. As an indicat…
Life-Detection Technologies for the Next Two Decades
Chaitanya Giri, Tony Z. Jia, H. James Cleaves +20
Since its inception six decades ago, astrobiology has diversified immensely to encompass several scientific questions including the origin and evolution of Terran life, the organic…
Highly Volcanic Exoplanets, Lava Worlds, and Magma Ocean Worlds: An Emerging Class of Dynamic Exoplanets of Significant Scientific Priority
Wade G. Henning, Joseph P. Renaud, Prabal Saxena +39
Highly volcanic exoplanets, which can be variously characterized as 'lava worlds', 'magma ocean worlds', or 'super-Ios' are high priority targets for investigation. The term 'lava…
Exoplanet Science Priorities from the Perspective of Internal and Surface Processes for Silicate and Ice Dominated Worlds
Wade G. Henning, Joseph P. Renaud, Avi M. Mandell +35
The geophysics of extrasolar planets is a scientific topic often regarded as standing largely beyond the reach of near-term observations. This reality in no way diminishes the cent…
The Importance of Multiple Observation Methods to Characterize Potentially Habitable Exoplanets: Ground- and Space-Based Synergies
Giada Arney, Natasha Batalha, Nicolas Cowan +8
The discovery of a truly habitable exoplanet would be one of the most important events in the history of science. However, the nature and distribution of habitable environments on…
The continued importance of habitability studies
Ramses M. Ramirez, Dorian S. Abbot, Vladimir Airapetian +7
This is a white paper in response to the National Academy of Sciences "Exoplanet Science Strategy" call. We summarize recent advances in theoretical habitability studies and argue…
K2-155: A Bright Metal-Poor M Dwarf with Three Transiting Super-Earths
Teruyuki Hirano, Fei Dai, John H. Livingston +32
We report on the discovery of three transiting super-Earths around K2-155 (EPIC 210897587), a relatively bright early M dwarf ( mag) observed during Campaign 13 of the NAS…
Life Beyond the Solar System: Remotely Detectable Biosignatures
Shawn Domagal-Goldman, Nancy Y. Kiang, Niki Parenteau +38
For the first time in human history, we will soon be able to apply the scientific method to the question "Are We Alone?" The rapid advance of exoplanet discovery, planetary systems…
Exploring Other Worlds: Science Questions for Future Direct Imaging Missions (EXOPAG SAG15 Report)
Daniel Apai, Nicolas Cowan, Ravikumar Kopparapu +30
The NASA Exoplanet Exploration Program's SAG15 group has solicited, collected, and organized community input on high-level science questions that could be addressed with future dir…