338 citations · 1.6k across the 21 of their papers we have counts for
21 papers
X-Ray, UV, and Optical Observations of Proxima Centauri's Stellar Cycle
B. J. Wargelin, S. H. Saar, Z. A. Irving +3
Proxima Cen (GJ 551; dM5.5e) is one of only about a dozen fully convective stars known to have a stellar cycle, and the only one to have long-term X-ray monitoring. A previous anal…
Breakthroughs in Cool Star Physics with the Line Emission Mapper X-ray Probe
Jeremy J. Drake, Julián Alvarado Gomez, Costanza Argiroffi +10
We outline some of the highlights of the scientific case for the advancement of stellar high energy physics using the Line Emission Mapper X-ray Probe ({\it LEM}). The key to advan…
Stellar Cycles in Fully Convective Stars and a New Interpretation of Dynamo Evolution
Zackery A. Irving, Steven H. Saar, Bradford J. Wargelin +1
An dynamo, combining shear and cyclonic convection in the tachocline, is believed to generate the solar cycle. However, this model cannot explain cycles in fast rotators (with…
X-ray Studies of Exoplanets: A 2020 Decadal Survey White Paper
Scott J. Wolk, Jeremy J. Drake, Graziella Branduardi-Raymont +28
Over the last two decades, the discovery of exoplanets has fundamentally changed our perception of the universe and humanity's place within it. Recent work indicates that a solar s…
High-Energy Photon and Particle Effects onExoplanet Atmospheres and Habitability
Jeremy J. Drake, Julián D. Alvarado-Gómez, Vladimir Airapetian +41
It is now recognized that energetic stellar photon and particle radiation evaporates and erodes planetary atmospheres and controls upper atmospheric chemistry. Key exoplanet host s…
Pointing Chandra Toward the Extreme Ultraviolet Fluxes of Very Low-Mass Stars
Jeremy J. Drake, Vinay L. Kashyap, Bradford J. Wargelin +1
The X-ray and EUV emission of stars plays a key role in the loss and evolution of the atmospheres of their planets. The coronae of dwarf stars later than M6 appear to behave differ…