Search Publications
Asymmetrical meridional expansion of bright clouds from Saturn's 2010 great white storm
Dowling, Timothy E.; Li, Liming; Creecy, Ellen C. +4 more
Saturn's recurring great white storms play an important role in modifying its atmosphere. In 2010, such a storm with clouds encircling the planet occurred in the northern hemisphere. An interesting phenomenon of this storm is that the associated bright clouds expanded asymmetrically with respect to latitude, such that the southern boundary of the …
A Multi-wavelength Analysis of Small-scale Brightenings Observed by IRIS
Morgan, Huw; Humphries, Llŷr Dafydd
Small-scale brightenings in solar atmospheric observations are a manifestation of heating and/or energy transport events. We present statistical characteristics of brightenings from a new detection method applied to 1330, 1400, and 2796 Å IRIS slit-jaw image time series. A total of 2377 events were recorded that coexist in all three channels, givi…
Elimination of a virtual impactor of 2006 QV89 via deep non-detection
Faggioli, L.; Micheli, M.; Hainaut, O. R. +3 more
Context. As a consequence of the large (and growing) number of near-Earth objects discovered, some are lost before their orbits can be firmly established and long-term recovery ensured. A fraction of these objects present non-negligible chances of impact with the Earth. We present a method of targeted observations that allow us to eliminate that r…
Heavy Metal and Rock in Space: Cluster RAPID Observations of Fe and Si
Daly, Patrick W.; Haaland, Stein; Vilenius, Esa
Metallic and silicate ions carry essential information about the evolution of the Earth and near Earth small bodies. Despite this, there has so far been very little focus on ions with atomic masses higher than oxygen in the terrestrial magnetosphere. In this paper, we report on abundances and properties of energetic ions with masses corresponding …
Simulating infrared spectro-photometric surveys with a SPRITZ
Pozzi, F.; Rodighiero, G.; Schaerer, D. +19 more
Mid- and far-infrared (IR) photometric and spectroscopic observations are fundamental to a full understanding of the dust-obscured Universe and the evolution of both star formation and black hole accretion in galaxies. In this work, using the specifications of the SPace Infrared telescope for Cosmology and Astrophysics (SPICA) as a baseline, we in…
Studying the interstellar medium to look for relics of triggered star formation among stellar clusters
Granada, A.; Paron, S.; Areal, M. B.
Evidence of triggered star formation at large spatial scales involving stellar clusters is scarce. We investigate a Galactic region (l = 130${_{.}^{\circ}}$0, b = 0${_{.}^{\circ}}$35) populated by several open stellar clusters that according to the last Gaia data release, are located at a distance of about 2.9 kpc. By analysing the interstellar me…
A Multicomponent Magnetic Proxy for Solar Activity
Warren, Harry P.; Upton, Lisa A.; Floyd, Linton E.
We present a new, multicomponent magnetic proxy for solar activity derived from full disk magnetograms that can be used in the specification and forecasting of the Sun's radiative output. To compute this proxy we project Carrington maps, such as the synchronic Carrington maps computed with the Advective Flux Transport (AFT) surface flux transport …
An Entropy-stable Ideal EC-GLM-MHD Model for the Simulation of the Three-dimensional Ambient Solar Wind
Feng, Xueshang; Wei, Fengsi; Li, Caixia
The main aim of the current work is to apply the Roe+Lax-Friedrichs (LF) hybrid entropy-stable scheme to the simulation of the three-dimensional ambient solar wind. The governing equations for the solar wind flow and magnetic field utilize the entropy-consistent nine-wave magnetic field divergence diminishing ideal magnetohydrodynamics (MHD) equat…
Warm ISM in the Sgr A complex. II. The [C/N] abundance ratio traced by [CII] 158 µm and [NII] 205 µm observations toward the Arched Filaments at the Galactic center
Abel, N.; Stutzki, J.; Simon, R. +2 more
Context. The Arches Cluster - Arched Filaments (AF) system is our Galaxy's prime example of the complexity involved in the interaction between the strong radiation field of numerous OB stars and their surrounding ISM in extremely harsh environments such as the Galactic center (GC) of the Milky Way. It offers a unique opportunity to study the close…
Discovery of a Highly Collimated Flow from the High-mass Protostar ISOSS J23053+5953 SMM2
Zhang, Qizhou; Carrasco-González, Carlos; Linz, Hendrik +6 more
We present Very Large Array C-, X-, and Q-band continuum observations, as well as 1.3 mm continuum and CO(2-1) observations with the Submillimeter Array toward the high-mass protostellar candidate ISOSS J23053+5953 SMM2. Compact centimeter continuum emission was detected near the center of the SMM2 core with a spectral index of 0.24(± 0.15) betwee…