Zobrazeno 1 - 10
of 1 089
pro vyhledávání: '"P. Steffes"'
Autor:
M. Parisi, A. Caruso, D. R. Buccino, E. Gramigna, P. Withers, L. Gomez‐Casajus, D. A. Coffin, R. S. Park, P. Steffes, P. Tortora, M. Zannoni, S. Levin, S. Bolton
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 22, Pp n/a-n/a (2023)
Abstract On 29 September 2022 the Juno spacecraft flew within 354 km of Europa's surface while several instruments probed the moon's surroundings. During the close flyby, radio occultations were performed by collecting single‐frequency Doppler meas
Externí odkaz:
https://doaj.org/article/bd1c6f6efe32446688180b9b84903c16
Autor:
Steffes, Lucille, Rybarczyk, Daniel R., Stanimirović, Snežana, Dawson, J. R., Putman, Mary, Richter, Philipp, Gallagher III, John, Liszt, Harvey, Murray, Claire, Dickey, John, Heiles, Carl, Hernandez, Audra, Lindner, Robert, Liu, Yangyang, McClure-Griffiths, Naomi, Wong, Tony, Savage, Blair
The Magellanic Stream, a tidal tail of diffuse gas falling onto the Milky Way, formed by interactions between the Small and Large Magellanic Clouds, is primarily composed of neutral atomic hydrogen (HI). The deficiency of dust and the diffuse nature
Externí odkaz:
http://arxiv.org/abs/2410.12102
Autor:
Li, Cheng, Allison, Michael, Atreya, Sushil, Brueshaber, Shawn, Fletcher, Leigh N., Guillot, Tristan, Li, Liming, Lunine, Jonathan, Miguel, Yamila, Orton, Glenn, Steffes, Paul, Waite, J. Hunter, Wong, Michael H., Levin, Steven, Bolton, Scott
The temperature structure of a giant planet was traditionally thought to be an adiabat assuming convective mixing homogenizes entropy. The only in-situ measurement made by the Galileo Probe detected a near-adiabatic temperature structure within one o
Externí odkaz:
http://arxiv.org/abs/2403.05363
Autor:
Bhattacharya, Ananyo, Li, Cheng, Atreya, Sushil K., Steffes, Paul G., Levin, Steven M., Bolton, Scott J., Guillot, Tristan, Gupta, Pranika, Ingersoll, Andrew P., Lunine, Jonathan I., Orton, Glenn S., Oyafuso, Fabiano A., Waite, J. Hunter, Belloti, Amadeo, Wong, Michael H.
Water and ammonia vapors are known to be the major sources of spectral absorption at pressure levels observed by the microwave radiometer (MWR) on Juno. However, the brightness temperatures and limb darkening observed by the MWR at its longest wavele
Externí odkaz:
http://arxiv.org/abs/2306.12546
Autor:
Gupta, Pranika, Atreya, Sushil K., Steffes, Paul G., Fletcher, Leigh N., Guillot, Tristan, Allison, Michael D., Bolton, Scott J., Helled, Ravit, Levin, Steven, Li, Cheng, Lunine, Jonathan I., Miguel, Yamila, Orton, Glenn S., Waite, J. Hunter, Withers, Paul
Publikováno v:
Planet. Sci. J. 3 159 (2022)
The thermal structure of planetary atmospheres is an essential input for predicting and retrieving the distribution of gases and aerosols, as well as the bulk chemical abundances. In the case of Jupiter, the temperature at a reference level - general
Externí odkaz:
http://arxiv.org/abs/2205.12926
Autor:
Rybarczyk, Daniel R., Gong, Munan, Stanimirovic, Snezana, Babler, Brian, Murray, Claire E., Winters, Jan Martin, Luo, Gan, Dame, T. M., Steffes, Lucille
We compare observations of HI from the Very Large Array (VLA) and the Arecibo Observatory and observations of HCO$^+$ from the Atacama Large Millimeter/submillimeter Array (ALMA) and the Northern Extended Millimeter Array (NOEMA) in the diffuse ($A_V
Externí odkaz:
http://arxiv.org/abs/2112.05767
Autor:
Rybarczyk, Daniel R., Stanimirovic, Snezana, Gong, Munan, Babler, Brian, Murray, Claire E., Gerin, Maryvonne, Winters, Jan Martin, Luo, Gan, Dame, T. M., Steffes, Lucille
We have complemented existing observations of HI absorption with new observations of HCO$^+$, C$_2$H, HCN, and HNC absorption from the Atacama Large Millimeter/submillimeter Array (ALMA) and the Northern Extended Millimeter Array (NOEMA) in the direc
Externí odkaz:
http://arxiv.org/abs/2109.06273
Autor:
Lincowski, Andrew P., Meadows, Victoria S., Crisp, David, Akins, Alex B., Schwieterman, Edward W., Arney, Giada N., Wong, Michael L., Steffes, Paul G., Parenteau, M. Niki, Domagal-Goldman, Shawn
The observation of a 266.94 GHz feature in the Venus spectrum has been attributed to PH$_3$ in the Venus clouds, suggesting unexpected geological, chemical or even biological processes. Since both PH$_3$ and SO$_2$ are spectrally active near 266.94 G
Externí odkaz:
http://arxiv.org/abs/2101.09837
Recently published ALMA observations suggest the presence of 20 ppb PH$_3$ in the upper clouds of Venus. This is an unexpected result, as PH$_3$ does not have a readily apparent source and should be rapidly photochemically destroyed according to our
Externí odkaz:
http://arxiv.org/abs/2101.09831
Autor:
Guillot, Tristan, Li, Cheng, Bolton, Scott, Brown, Shannon, Ingersoll, Andrew, Janssen, Michael, Levin, Steven, Lunine, Jonathan, Orton, Glenn, Steffes, Paul, Stevenson, David
Publikováno v:
Journal of Geophysical Research. Planets, Wiley-Blackwell, 2020, 125 (8)
Observations of Jupiter's deep atmosphere by the Juno spacecraft have revealed several puzzling facts: The concentration of ammonia is variable down to pressures of tens of bars, and is strongly dependent on latitude. While most latitudes exhibit a l
Externí odkaz:
http://arxiv.org/abs/2012.14316