Search Publications
Characterizing CO Emitters in the SSA22-AzTEC26 Field
Tamura, Yoichi; Kohno, Kotaro; Kawabe, Ryohei +5 more
We report the physical characterization of four CO emitters detected near the bright submillimeter galaxy (SMG) SSA22-AzTEC26. We analyze the data from Atacama Large Millimeter/submillimeter Array band 3, 4, and 7 observations of the SSA22-AzTEC26 field. In addition to the targeted SMG, we detect four line emitters with signal-to-noise ratio >5…
X-Ray and UV Observations of the Contact Binary KIC 9832227
Pandel, Dirk; Molnar, Lawrence A.
We investigate the X-ray and UV emission from the contact binary star KIC 9832227, which was observed with XMM-Newton for one orbital cycle. The binary is detected with an average X-ray luminosity of 3.4 × 1030 erg s-1. The X-ray emission is restricted to energies below 3 keV and originates from a multitemperature plasma with…
Partially Erupted Prominence Material as a Diagnostic of Coronal Mass Ejection Trajectory
Thompson, B. J.; Mason, E. I.; Hovis-Afflerbach, B. A.
Coronal mass ejections (CMEs) are energetic releases of large-scale magnetic structures from the Sun. CMEs can have impacts on spacecraft and at Earth. This trajectory is typically assumed to be radial, but often the CME moves outward with some spatial offset from the source region where the eruption initially occurred. A CME is frequently accompa…
Nonlinear Fast Magnetosonic Waves in Solar Prominence Pillars
DeVore, C. Richard; Ofman, Leon; Kucera, Therese A.
We investigate the properties of nonlinear fast magnetosonic (NFM) waves in a solar prominence, motivated by recent high-resolution and high-cadence Hinode/Solar Optical Telescope (SOT) observations of small-scale oscillations in a prominence pillar. As an example, we analyze the details of the 2012 February 14 Hinode/SOT observations of quasi-per…
The electric fields and "lightning jets" of the Sun and solar wind
Driscoll, C. F.
A model of electric energization of the solar wind and corona is developed, including electro-magnetic particle effects precluded by traditional magneto-hydro (MHD) assumptions. Using standard 1D radial solar models for particle density and temperature, the core gravito-electric field is calculated; and the range of possible photospheric photo-ele…
Herbig-Haro Flows and Young Stars in the Dobashi 5006 Dark Cloud
Rastorguev, A. S.; Magakian, T. Yu.; Movsessian, T. A. +1 more
Two new Herbig-Haro flows were found in a study of the isolated Dobashi 5006 dark cloud (l = 216°.7, b = –13°.9): one certain (HH 1179) and one presumable, associated with the infrared sources 2MASS 06082284-0936139 and 2MASS 06081525-0933490, correspondingly. Judging from their spectral energy distributions, these sources may be Class 1 objects w…
Photospheric magnetic flux and coronal emission properties of small-scale bright and faint loops in the quiet Sun
Madjarska, Maria S.; Wiegelmann, Thomas; Galsgaard, Klaus
Context. The study explores the photospheric magnetic properties of bright and faint small-scale loop systems in the solar atmosphere of the quiet Sun, also known as X-ray or coronal bright points.
Aims: To understand how plasma confined in small-scale loops is heated to million degrees, the loop-associated photospheric and coronal magnetic f…
Deciphering the Structural History of Ulysses Fossae, Mars, Using Fault Pattern Analysis
Byrne, Paul K.; Shahrzad, Stephanie; Bramham, Emma K. +3 more
Ulysses Fossae is a faulted region surrounded by lava flows that sits between the major volcanoes of the Tharsis Rise volcanic province on Mars. This area is unique, as it is the only exposure of extensional faulting which can be related to the Olympus Mons volcano and one of the only a few faulted areas relating to the Tharsis Montes. In order to…
Simulating Secondary Electron and Ion Emission from the Cassini Spacecraft in Saturn's Ionosphere
Miyake, Y.; Usui, H.; Johansson, F. L. +3 more
The Cassini spacecraft's Grand Finale flybys through Saturn's ionosphere provided unprecedented insight into the composition and dynamics of the gas giant's upper atmosphere and a novel and complex spacecraft-plasma interaction. In this article, we further study Cassini's interaction with Saturn's ionosphere using three-dimensional particle-in-cel…
Mass Ratio of Single-line Spectroscopic Binaries with Visual Orbits Using Bayesian Inference and Suitable Priors
Vanzi, Leonardo; Anguita-Aguero, Jennifer; Mendez, Rene A. +4 more
We present orbital elements for 22 single-line binaries, nine of them studied for the first time, determined from a joint spectroscopic and astrometric solution. The astrometry is based on interferometric measurements obtained with the HRCam Speckle camera on the SOAR 4.1 m telescope at Cerro Pachon, Chile, supplemented with historical data. The s…