Lorraine M. Nicholson
A5047878564- Astrophysics and Star Formation Studies
- Space Science and Extraterrestrial Life
- Stellar, planetary, and galactic studies
- Radio Astronomy Observations and Technology
- Astronomy and Astrophysical Research
- Space exploration and regulation
- Planetary Science and Exploration
- Gamma-ray bursts and supernovae
- Astro and Planetary Science
University of California, Los Angeles
2022-2023
University of Florida
2023
Planetary Science Institute
2022
In recent years, analyzing the bimodality in size distribution of small planets, i.e., `radius valley', has given us unprecedented insight into planet formation process. Here we explore properties radius valley for low mass stars, assuming that core-powered mass-loss is dominant process shaping exoplanet population. We show slope size-orbital period space, to first-order, does not vary with stellar and a negative $\text{d log}R_p/\text{d log}P \simeq -0.11$ even stars as 0.1 $M_\odot$,...
Abstract We conducted a search for narrowband radio signals over four observing sessions in 2020–2023 with the L -band receiver (1.15–1.73 GHz) of 100 m diameter Green Bank Telescope. pointed telescope directions 62 TESS Objects Interest, capturing emissions from total ∼11,680 stars and planetary systems ∼9′ beam telescope. All detections were either automatically rejected or visually inspected confirmed to be anthropogenic nature. also quantified end-to-end efficiency SETI pipelines signal...
Abstract Exoplanets between the sizes of Earth and Neptune are abundant in universe yet absent our solar system. We do not know if these “sub-Neptune” planets have a surface or how deep their surfaces may be. Recent studies shown atmospheric chemistry reflect depth planets. In this work, we aim to determine future observations—at wavelengths resolutions applicable JWST—can pressure sub-Neptunes. present model transmission emission spectra canonical sub-Neptune K2-18b assuming four different...
We conducted a search for narrowband radio signals over four observing sessions in 2020-2023 with the L-band receiver (1.15-1.73 GHz) of 100 m diameter Green Bank Telescope. pointed telescope directions 62 TESS Objects Interest, capturing emissions from total ~11,680 stars and planetary systems ~9 arcminute beam telescope. All detections were either automatically rejected or visually inspected confirmed to be anthropogenic nature. In this work, we also quantified end-to-end efficiency SETI...