activity
20072024
most citedStrange messenger: A new history of hydrogen on Earth, as told by Xenon

176 citations · 585 across the 20 of their papers we have counts for

collaborators
Showing astro-ph.EPShow all

7 papers · 1 filter

astro-ph.EP2023

Elastic and inelastic cross sections for C+CO and C+CO scattering at superthermal energies

Marko Gacesa

We report elastic and inelastic cross sections for fast superthermal C() and C() atoms scattering on CO. The cross sections were computed using q…

astro-ph.EP2019★ 21 cited

O()+CO scattering cross sections at superthermal collision energies for planetary aeronomy

Marko Gacesa, Robert J. Lillis, Kevin J. Zahnle

We report new elastic and inelastic cross sections for O()+CO scattering at collision energies from 0.03 to 5 eV, of major importance to O escape from Mars, Venus, and CO$…

astro-ph.EP2019★ 2 cited

Impacts of Quantum Chemistry Calculations on Exoplanetary Science, Planetary Astronomy, and Astrophysics

Der-you Kao, Marko Gacesa, Renata M. Wentzcovitch +26

Several of NASA missions (TESS, JWST, WFIRST, etc.) and mission concepts (LUVOIR, HabEx, and OST) emphasize the exploration and characterization of exoplanets, and the study of the…

astro-ph.EP2018★ 176 cited

Strange messenger: A new history of hydrogen on Earth, as told by Xenon

Kevin J. Zahnle, Marko Gacesa, David C. Catling

Atmospheric xenon is strongly mass fractionated, the result of a process that apparently continued through the Archean and perhaps beyond. Previous models that explain Xe fractiona…

astro-ph.EP2016★ 12 cited

Non-thermal production and escape of OH from the upper atmosphere of Mars

Marko Gacesa, Nicholas Lewkow, Vasili Kharchenko

We present a theoretical analysis of formation and kinetics of hot OH molecules in the upper atmosphere of Mars produced in reactions of thermal molecular hydrogen and energetic ox…

astro-ph.EP2011★ 40 cited

Non-thermal escape of molecular hydrogen from Mars

Marko Gacesa, Peng Zhang, Vasili Kharchenko

We present a detailed theoretical analysis of a non-thermal escape of molecular hydrogen from Mars induced by collisions with hot atomic oxygen from martian corona. To accurately d…

astro-ph.EP2010★ 2 cited

Polarization of the charge-exchange X-rays induced in the Heliosphere

Marko Gacesa, Hans-Reinhard Müller, Robin Côté +1

We report results of a theoretical investigation of polarization of the X-ray emissions induced in charge-exchange collisions of fully stripped solar wind ions C and O$^{8+}…