57 citations · 153 across the 12 of their papers we have counts for
12 papers
Microwave Remote Sensing of Giant Planet Atmospheres: Considerations for Saturn and Uranus Orbiter Missions
Alex Akins, Mark Hofstadter
Microwave radiometer instruments are uniquely capable of studying volatile element abundances and heat/mass transport within the deep atmospheres of giant planets. The results of t…
Can radio occultations constrain Uranus or Neptune's internal rotation periods?
Christopher R. Mankovich, Alex B. Akins, Dustin Buccino +2
The shapes of fluid planets bear the signatures of rotational flattening and atmospheric flows. Precise knowledge of their shapes and wind profiles may therefore reveal their inter…
A multi-frequency global view of Callisto's thermal properties from ALMA
Maria Camarca, Katherine de Kleer, Bryan Butler +5
We present thermal observations of Callisto's leading and trailing hemispheres obtained using the Atacama Large Millimeter/submillimeter Array (ALMA) at 0.87 mm (343 GHz), 1.3 mm (…
Setting the Stage for Uranian Seismology from Rings and Radial Velocities
Christopher R. Mankovich, A. James Friedson, Marzia Parisi +6
A Uranus orbiter would be well positioned to detect the planet's free oscillation modes, whose frequencies can resolve questions about Uranus's weakly constrained interior. We calc…
Subsurface Thermophysical Properties of Europa's Leading and Trailing Hemispheres as Revealed by ALM
A. E. Thelen, K. de Kleer, M. Camarca +4
We present best-fit values of porosity -- and the corresponding effective thermal inertiae -- determined from three different depths in Europa's near-subsurface (~1-20 cm). The por…
Planetary Radio Interferometry and Doppler Experiment (PRIDE) of the JUICE mission
Leonid I. Gurvits, Giuseppe Cimo, Dominic Dirkx +20
Planetary Radio Interferometry and Doppler Experiment (PRIDE) is a multi-purpose experimental technique aimed at enhancing the science return of planetary missions. The technique e…
Thermal properties of the leading hemisphere of Callisto inferred from ALMA observations
Maria Camarca, Katherine de Kleer, Bryan Butler +5
We present a thermal observation of Callisto's leading hemisphere obtained using the Atacama Large Millimeter/submillimeter Array (ALMA) at 0.87 mm (343 GHz). The angular resolutio…
Evidence of a Polar Cyclone on Uranus from VLA Observations
Alex Akins, Mark Hofstadter, Bryan Butler +4
We present observations of Uranus in northern spring with the VLA from 0.7 cm to 5 cm. These observations reveal details in thermal emission from Uranus' north pole at 10s of bars,…
Approaches for Retrieving Sulfur Species Abundances from Dual X/Ka Band Radio Occultations of Venus with EnVision and VERITAS
Alex B. Akins, Tatiana M. Bocanegra-Bahamón, Kuo-Nung Wang +4
The EnVision and VERITAS missions to Venus will fly with X and Ka band telecommunications channels which can be used to conduct radio occultation studies of Venus' atmosphere. Whil…
Microwave Observations of Venus with CLASS
Sumit Dahal, Michael K. Brewer, Alex B. Akins +21
We report on the disk-averaged absolute brightness temperatures of Venus measured at four microwave frequency bands with the Cosmology Large Angular Scale Surveyor (CLASS). We meas…
Claimed detection of PH in the clouds of Venus is consistent with mesospheric SO
Andrew P. Lincowski, Victoria S. Meadows, David Crisp +7
The observation of a 266.94 GHz feature in the Venus spectrum has been attributed to PH in the Venus clouds, suggesting unexpected geological, chemical or even biological proce…
Complications in the ALMA Detection of Phosphine at Venus
Alex B. Akins, Andrew P. Lincowski, Victoria S. Meadows +1
Recently published ALMA observations suggest the presence of 20 ppb PH in the upper clouds of Venus. This is an unexpected result, as PH does not have a readily apparent so…