252 citations · 535 across the 14 of their papers we have counts for
14 papers
The MegaWave Radio Surveyor
T. Joseph W. Lazio, Evgenya Shkolnik, James Aguirre +40
Several Decadal-level questions in astrophysics, exoplanets, astrobiology, and cosmology can be addressed only at low radio frequencies inaccessible from Earth. The MegaWave Radio…
A Dragon's Flame of Many Colours: Multi-wavelength Observations of Flares from the Active M Binary CR Draconis
James A. G. Jackman, Evgenya L. Shkolnik, R. O. Parke Loyd +9
We present the results of a multi-wavelength Pro-Am campaign to study the behaviour of flares from the active M1.5V star binary CR Draconis. CR Dra was observed with TESS 20-s phot…
Using Lyman- transits to constrain models of atmospheric escape
Ethan Schreyer, James. E. Owen, R. O. Parke Loyd +1
Lyman- transits provide an opportunity to test models of atmospheric escape directly. However, translating observations into constraints on the properties of the escaping atmosp…
Coronal X-Ray Emission from Nearby, Low-Mass, Exoplanet Host Stars Observed by the MUSCLES and Mega-MUSCLES HST Treasury Survey Projects
Alexander Brown, P. Christian Schneider, Kevin France +8
The high energy X-ray and ultraviolet (UV) radiation fields of exoplanet host stars play a crucial role in controlling the atmospheric conditions and the potential habitability of…
Flares, Rotation, Activity Cycles and a Magnetic Star-Planet Interaction Hypothesis for the Far Ultraviolet Emission of GJ 436
R. O. Parke Loyd, P. C. Schneider, James A. G. Jackman +6
Variability in the far ultraviolet (FUV) emission produced by stellar activity affects photochemistry and heating in orbiting planetary atmospheres. We present a comprehensive anal…
The UV-SCOPE Mission: Ultraviolet Spectroscopic Characterization Of Planets and their Environments
David R. Ardila, Evgenya Shkolnik, John Ziemer +22
UV-SCOPE is a mission concept to determine the causes of atmospheric mass loss in exoplanets, investigate the mechanisms driving aerosol formation in hot Jupiters, and study the in…
Constraining the Physical Properties of Stellar Coronal Mass Ejections with Coronal Dimming: Application to Far Ultraviolet Data of Eridani
R. O. Parke Loyd, James Mason, Meng Jin +9
Coronal mass ejections (CMEs) are a prominent contributor to solar system space weather and might have impacted the Sun's early angular momentum evolution. A signal diagnostic of C…
Accurate Modeling of Lyman-alpha Profiles and their Impact on Photolysis of Terrestrial Planet Atmospheres
Sarah Peacock, Travis S. Barman, Adam C. Schneider +4
Accurately measuring and modeling the Lyman- (Ly; 1215.67 Å) emission line from low mass stars is vital for our ability to build predictive high energy stellar spectra, ye…
The impact of time-dependent stellar activity on exoplanet atmospheres
Amy J. Louca, Yamila Miguel, Shang-Min Tsai +3
M-dwarfs are thought to be hostile environments for exoplanets. Stellar events are very common on such stars. These events might cause the atmospheres of exoplanets to change signi…
Onboard Dynamic Image Exposure Control for the Star-Planet Activity Research CubeSat (SPARCS)
Tahina Ramiaramanantsoa, Judd D. Bowman, Evgenya L. Shkolnik +19
The Star-Planet Activity Research CubeSat (SPARCS) is a 6U CubeSat under development to monitor the flaring and chromospheric activity of M dwarfs at near-ultraviolet (NUV) and far…
The fundamentals of Lyman-alpha exoplanet transits
James E. Owen, Ruth A. Murray-Clay, Ethan Schreyer +7
Lyman- transits have been detected from several nearby exoplanets and are one of our best insights into the atmospheric escape process. However, due to ISM absorption, we typica…
Ultraviolet C II and Si III Transit Spectroscopy and Modeling of the Evaporating Atmosphere of GJ436b
R. O. Parke Loyd, T. T. Koskinen, Kevin France +2
Hydrogen gas evaporating from the atmosphere of the hot-Neptune GJ436b absorbs over 50% of the stellar Ly emission during transit. Given the planet's atmospheric composition and…
Lyman- Transit Spectroscopy and the Neutral Hydrogen Tail of the Hot Neptune GJ436b
Jennifer R. Kulow, Kevin France, Jeffery Linsky +1
To date, more than 750 planets have been discovered orbiting stars other than the Sun. Two sub-classes of these exoplanets, "hot Jupiters" and their less massive counterparts "hot…
Fluctuations and Flares in the Ultraviolet Line Emission of Cool Stars: Implications for Exoplanet Transit Observations
R. O. Parke Loyd, Kevin France
Variations in stellar flux can potentially overwhelm the photometric signal of a transiting planet. Such variability has not previously been well-characterized in the ultraviolet l…