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Doppler shifts of the Fe I spectral line at lambda5250 Angstroms from the full solar disk obtained over the period 1986 to 2009 are analyzed to determine the circulation velocity of the solar surface along meridional planes. Simultaneous…

Solar and Stellar Astrophysics · Physics 2015-05-20 Roger K. Ulrich

Oscillations were observed across the whole solar disk using the Doppler shift and line depth of spectral lines from the CO molecule near 4666~nm with the National Solar Observatory's McMath/Pierce solar telescope. Power, coherence, and…

Solar and Stellar Astrophysics · Physics 2015-05-20 Matthew Penn , Tom Schad , Erin Cox

Current models of the solar wind must approximate (or ignore) the small-scale dynamics within the solar atmosphere, however these are likely important in shaping the emerging wave-turbulence spectrum and ultimately heating/accelerating the…

Solar and Stellar Astrophysics · Physics 2022-09-28 Adam J. Finley , Sacha A. Brun , Mats Carlsson , Mikolaj Szydlarski , Viggo Hansteen , Munehito Shoda

The recent (apparent) passage of the Voyager 1 spacecraft into interstellar space provides us with front-row seats to the complex interplay between the solar wind and the protective surrounding bubble known as heliosphere. The heliosphere…

Solar and Stellar Astrophysics · Physics 2014-12-11 L. Ilsedore Cleeves , Edwin A. Bergin , Fred C. Adams

The formation of stars is usually accompanied by the launching of protostellar outflows. Observations with the Atacama Large Millimetre/sub-millimetre Array (ALMA) will soon revolutionalise our understanding of the morphologies and…

Solar and Stellar Astrophysics · Physics 2014-01-07 Thomas Peters , Pamela D. Klaassen , Daniel Seifried , Robi Banerjee , Ralf S. Klessen

Electric field measurements of the Time Domain Sampler (TDS) receiver, part of the Radio and Plasma Waves (RPW) instrument on board Solar Orbiter, often exhibit very intense broadband wave emissions at frequencies below 20~kHz in the…

We present $^{29}$SiO(J=8--7) $\nu$=0, SiS (J=19--18) $\nu$=0, and $^{28}$SiO (J=8--7) $\nu$=1 molecular line archive observations made with the Atacama Large Millimeter/Submillimeter Array (ALMA) of the molecular outflow associated with…

Solar and Stellar Astrophysics · Physics 2020-12-09 J. A. López-Vázquez , Luis A. Zapata , Susana Lizano , Jorge Cantó

Background quasars are potentially sensitive probes of galactic outflows provided that one can determine the origin of the absorbing material since both gaseous disks and strong bipolar outflows can contribute to the absorption…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 N. Bouche , W. Hohensee , R. Vargas , G. G. Kacprzak , C. L. Martin , J. Cooke , C. W. Churchill

We present high sensitivity and high angular resolution images of the high velocity (vLSR>30kms^-1) CO emission in the J=1-0 and J=2-1 lines of the Orion KL region. These results reveal the morphology of the high-velocity CO emission at the…

Astrophysics · Physics 2007-05-23 A. Rodriguez-Franco , J. Martin-Pintado , T. L. Wilson

Planetary habitability is in part determined by the atmospheric evolution of a planet; one key component of such evolution is escape of heavy ions to space. Ion loss processes are sensitive to the plasma environment of the planet, dictated…

Earth and Planetary Astrophysics · Physics 2019-03-27 Hilary Egan , Riku Jarvinen , David Brain

Novel results which reveal phase transition processes in the solar wind plasma during shock events are presented in this study which is the first part of a trilogy concerning the solar wind complexity. Solar wind plasma is a typical case of…

We combine observations of the Coronal Multi-channel Polarimeter (CoMP) and the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) to study the characteristic properties of (propagating) Alfvenic motions and…

Solar and Stellar Astrophysics · Physics 2015-07-02 Jiajia Liu , Scott W. McIntosh , Ineke De Moortel , Yuming Wang

The SWICS instrument aboard the ACE satellite has detected frequent intervals in the slow solar wind and interplanetary coronal mass ejections (ICMEs) in which C6+ and other fully stripped ions are strongly depleted, though the ionization…

Solar and Stellar Astrophysics · Physics 2022-09-21 John C. Raymond , M. Asgari-Targhi , Maurice L. Wilson , Yeimy J. Rivera , Susan T Lepri , Chengcai Shen

The Venusian atmosphere is covered by clouds with super-rotating winds whose accelerating mechanism is still not well understood. The fastest winds, occurring at the cloud tops ($\sim$70 km height), have been studied for decades thanks to…

Earth and Planetary Astrophysics · Physics 2019-03-08 J. Peralta , N. Iwagami , Sánchez-Lavega , Y. J. Lee , R. Hueso , M. Narita , T. Imamura , P. Miles , A. Wesley , E. Kardasis , S. Takagi

Solar wind ion reflection at collisionless shocks regulates foreshock plasma dynamics, yet the quantitative dependence of reflected ion properties on upstream and shock-related parameters remains unclear, causing difficulties in predicting…

Space Physics · Physics 2026-03-30 Runyi Liu , Terry Liu , Kun Zhang , Vassilis Angelopoulos , Siqi Zhao

Despite the low solar irradiation it receives, Neptune shows a very active atmosphere with some of the most intense dynamics observed in Solar System atmospheres. Characterizing the atmospheric temperature profiles of the planet is a key to…

We present high resolution transmission spectra of giant planet atmospheres from a coupled 3-D atmospheric dynamics and transmission spectrum model that includes Doppler shifts which arise from winds and planetary motion. We model jovian…

Earth and Planetary Astrophysics · Physics 2015-06-22 Eliza M. -R. Kempton , Rosalba Perna , Kevin Heng

We present a sky simulation of the atomic HI emission line and the first ten CO rotational emission lines of molecular gas in galaxies beyond the Milky Way. The simulated sky field has a comoving diameter of 500/h Mpc, hence the actual…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-13 Danail Obreschkow , Hans-Rainer Kloeckner , Ian Heywood , Francois Levrier , Steve Rawlings

Using narrow-band images recorded on over 150 nights by the 35 cm coronagraph which comprises PSI's Io Input/Output Facility (IoIO), we detected a 6-month long enhancement in the Jovian sodium nebula. The onset of the enhancement occurred…

Earth and Planetary Astrophysics · Physics 2019-01-28 Jeffrey P. Morgenthaler , Julie A. Rathbun , Carl A. Schmidt , Jeffrey Baumgardner , Nicholas M. Schneider

Outflows driven by active galactic nuclei (AGN) are seen in numerous compact sources; however, it has remained unclear how to distinguish between the driving mechanisms, such as winds and jets. Therefore, our study aims to offer…

High Energy Astrophysical Phenomena · Physics 2024-08-02 Moun Meenakshi , Dipanjan Mukherjee , Gianluigi Bodo , Paola Rossi , Chris M. Harrison