output
19962026
Showing 2022 · astro-ph.EPShow all

7 papers · 2 filters

astro-ph.EP2022★ 10 cited

Recovering Phosphine in Venus' Atmosphere from SOFIA Observations

Jane S. Greaves, Janusz J. Petkowski, Anita M. S. Richards +3

Searches for phosphine in Venus' atmosphere have sparked a debate. Cordiner et al. 2022 analyse spectra from the Stratospheric Observatory For Infrared Astronomy (SOFIA) and infer…

astro-ph.EP2022★ 15 cited

A LOOK at Outbursts of Comet C/2014 UN (Bernardinelli-Bernstein) Near 20 au

Michael S. P. Kelley, Rosita Kokotanekova, Carrie E. Holt +10

Cometary activity may be driven by ices with very low sublimation temperatures, such as carbon monoxide ice, which can sublimate at distances well beyond 20 au. This point is empha…

astro-ph.EP2022★ 15 cited

Refinement of the convex shape model and tumbling spin state of (99942) Apophis using the 2020-2021 apparition data

H. -J. Lee, M. -J. Kim, A. Marciniak +30

Context. The close approach of the near-Earth asteroid (99942) Apophis to Earth in 2029 will provide a unique opportunity to examine how the physical properties of the asteroid cou…

astro-ph.EP2022★ 13 cited

Asteroid Measurements at Millimeter Wavelengths with the South Pole Telescope

P. M. Chichura, A. Foster, C. Patel +141

We present the first measurements of asteroids in millimeter wavelength (mm) data from the South Pole Telescope (SPT), which is used primarily to study the cosmic microwave backgro…

astro-ph.EP2022★ 2 cited

The DRAKE mission: finding the frequency of life in the Cosmos

Subhajit Sarkar

In the search for life in the Universe, exoplanets represent numerous natural experiments in planet formation, evolution, and the emergence of life. This raises the fascinating pro…

astro-ph.EP2022★ 16 cited

Constraints on the production of phosphine by Venusian volcanoes

William Bains, Oliver Shorttle, Sukrit Ranjan +4

The initial reports of the presence of phosphine in the cloud decks of Venus has led to the suggestion that volcanism was the source of phosphine, through volcanic phosphides eject…

astro-ph.EP2022★ 22 cited

Photochemical Runaway in Exoplanet Atmospheres: Implications for Biosignatures

Sukrit Ranjan, Sara Seager, Zhuchang Zhan +5

About 2.5 billion years ago, microbes learned to harness plentiful solar energy to reduce CO with HO, extracting energy and producing O as waste. O production from…