Search Publications
Spitzer- and Herschel-based Spectral Energy Distributions of 24 µm Bright z ~ 0.3-3.0 Starbursts and Obscured Quasars
Fadda, Dario; Yan, Lin; Sajina, Anna +2 more
In this paper, we characterize the infrared spectral energy distributions (SEDs) of mid-IR-selected z ~ 0.3-3.0 and L IR ~ 1011-1013 L ⊙ galaxies, and study how their SEDs differ from those of local and high-z analogs. Infrared SEDs depend both on the power source (AGN or star formation) and the dust dis…
Rogue wave in Titan's atmosphere
Moslem, W. M.; El-Labany, S. K.; El-Bedwehy, N. A. +2 more
Rogue wave in a collisionless, unmagnetized electronegative plasma is investigated. For this purpose, the basic set of fluid equations is reduced to the Korteweg-de Vries (KdV) equation. However, when the frequency of the carrier wave is much smaller than the ion plasma frequency then the KdV equation is also used to study the nonlinear evolution …
Tidally-induced melting events as the origin of south-pole activity on Enceladus
Čadek, Ondřej; Tobie, Gabriel; Běhounková, Marie +1 more
The intense activity at the south pole of Enceladus hints at an internal water reservoir. However, there is no direct evidence of liquid water at present and its long-term stability in the interior remains problematic. By modeling heat production and transfer in the ice shell in a spherical geometry, we show that tidal heating naturally leads to a…
Low-altitude Reconnection Inflow-Outflow Observations during a 2010 November 3 Solar Eruption
Reeves, Katharine K.; Savage, Sabrina L.; McKenzie, David E. +3 more
For a solar flare occurring on 2010 November 3, we present observations using several SDO/AIA extreme-ultraviolet (EUV) passbands of an erupting flux rope followed by inflows sweeping into a current sheet region. The inflows are soon followed by outflows appearing to originate from near the termination point of the inflowing motion—an observation …
Distinguishing between HII regions and planetary nebulae with Hi-GAL, WISE, MIPSGAL, and GLIMPSE
García-Lario, P.; Zavagno, A.; Barlow, M. J. +2 more
Context. H II regions and planetary nebulae (PNe) both emit at radio and infrared (IR) wavelengths, and angularly small H II regions can be mistaken for PNe. This problem of classification is most severe for H II regions in an early evolutionary stage, those that are extremely distant, or those that are both young and distant. Previous work has sh…
The origin and evolution of Saturn’s 2011-2012 stratospheric vortex
Fletcher, Leigh N.; Sánchez-Lavega, A.; García-Melendo, E. +12 more
The planet-encircling springtime storm in Saturn’s troposphere (December 2010-July 2011, Fletcher, L.N. et al. [2011]. Science 332, 1413-1414; Sánchez-Lavega, A. et al. [2011]. Nature 475, 71-74; Fischer, G. et al. [2011]. Nature 475, 75-77) produced dramatic perturbations to stratospheric temperatures, winds and composition at mbar pressures that…
Spontaneous Chiral Symmetry Breaking of Hall Magnetohydrodynamic Turbulence
Galtier, Sébastien; Meyrand, Romain
Hall magnetohydrodynamics (MHD) is investigated through three-dimensional direct numerical simulations. We show that the Hall effect induces a spontaneous chiral symmetry breaking of the turbulent dynamics. The normalized magnetic polarization is introduced to separate the right- (R) and left-handed (L) fluctuations. A classical k-7/3 s…
X-Ray View of the Shock Front in the Merging Cluster Abell 3376 with Suzaku
Fukazawa, Yasushi; Nakazawa, Kazuhiro; Ohashi, Takaya +3 more
We report on a Suzaku measurement of the shock feature associated with the western radio relic in the merging cluster A 3376. The temperature profile is characterized by an almost flat radial shape with kT ∼ 4 keV within 0.5r200 and a rise by about 1 keV inside the radio relic. Across the relic region (0.6-0.8r200), the tempe…
Source-plane Reconstruction of the Bright Lensed Galaxy RCSGA 032727-132609
Rigby, Jane R.; Barrientos, L. Felipe; Sharon, Keren +4 more
We present new Hubble Space Telescope/Wide Field Camera 3 imaging data of RCSGA 032727-132609, a bright lensed galaxy at z = 1.7 that is magnified and stretched by the lensing cluster RCS2 032727-132623. Using this new high-resolution imaging, we modify our previous lens model (which was based on ground-based data) to fully understand the lensing …
Most Mars minerals in a nutshell: Various alteration phases formed in a single environment in Noctis Labyrinthus
Murchie, Scott L.; Mustard, John F.; Le Mouélic, Stéphane +7 more
A closed depression in the Noctis Labyrinthus region of Mars (at 10.4°S, 98.6°W), believed to have formed in the Late Hesperian, holds an inner pit partially filled with several hundred meters of stratified material. Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) visible-near infrared reflectance data reveal signatures of numerous hy…