1993 | Ph.D. Physics, University of California, Berkeley |
1985 | S.B. Physics, Massachusetts Institute of Technology |
2016-present | Lynx/X-Ray Surveyor Science & Technology Definition Team: Stellar Cycles |
2009 | International X-ray Observatory (IXO) Science Team Associate |
2008-2009 | Generation-X (Gen-X) Facility Science Team: Planets, Stars, and the Galaxy |
2008 | Constellation-X (Con-X) Facility Science Teams:
Solar System, Planet Formation, and Evolution
• MHD Physics in Stellar Environments • Plasma Diagnostics and Atomic Astrophysics |
1998-present | Chandra X-Ray Center Calibration Scientist, Smithsonian Astrophysical Observatory |
1993-1998 | AXAF Ground Calibration Scientist, Smithsonian Astrophysical Observatory |
2023 | PI, "F-Star Stellar Cycles," Chandra Guest Observer/Cycle 25 |
2021 | PI, "The X-Ray View of Stellar Cycles," XMM Guest Observer/Cycle 20 |
2021 | PI, "Does Proxima Centauri Really Have a Stellar Cycle?," Swift Guest Investigator/Cycle 17 |
2020 | PI, "X-Ray Stellar Cycles at Low Rossby Number," Chandra Guest Observer/Cycle 22 |
2020 | PI, "Proxima Centauri's Stellar Cycle," Swift Guest Investigator/Cycle 16 |
2019 | PI, "X-Ray Stellar Cycles at Low Rossby Number," Chandra Guest Observer/Cycle 21 |
2019 | PI, "The X-Ray View of Stellar Cycles," XMM Guest Observer/Cycle 18 |
2019 | PI, "Proxima Centauri's Stellar Cycle," Swift Guest Investigator/Cycle 15 |
2018 | PI, "Stellar Cycle Sampling: the X-Ray Expansion," XMM Guest Observer/Cycle 17 |
2017 | PI, "Proxima Centauri's Stellar Cycle," Swift Guest Investigator/Cycle 13 |
2017 | PI, "The Stellar Cycle of Proxima Centauri," XMM Guest Observer/Cycle 16 |
High-energy astrophysics:
Stellar coronae, solar wind charge exchange,
soft X-ray background, local ISM
Solar/stellar astrophysics:
Stellar cycles and winds, interaction of winds
and planetary atmospheres
Laboratory X-ray astrophysics:
High-resolution spectroscopy,
electron impact excitation, charge exchange