Search Publications
Projection Effects in Coronal Dimmings and Associated EUV Wave Event
Magdalenić, J.; Temmer, M.; Veronig, A. M. +2 more
We investigate the high-speed (v > 1000 km s-1) extreme-ultraviolet (EUV) wave associated with an X1.2 flare and coronal mass ejection (CME) from NOAA active region 11283 on 2011 September 6 (SOL2011-09-06T22:12). This EUV wave features peculiar on-disk signatures in particular, we observe an intermittent “disappearance” of the front…
The CO2 absorption spectrum in the 2.3 µm transparency window by high sensitivity CRDS: (I) Rovibrational lines
Campargue, A.; Perevalov, V. I.; Tashkun, S. A. +5 more
The absorption of carbon dioxide is very weak near 2.3 µm which makes this transparency window of particular interest for the study of Venus' lower atmosphere. As a consequence of the weakness of the transitions located in this region, previous experimental data are very scarce and spectroscopic databases provide calculated line lists which …
Solar Energetic Particle Event Onsets: Far Backside Solar Sources and the East-West Hemispheric Asymmetry
Kahler, S. W.
Prompt onsets and short rise times to peak intensities Ip have been noted in a few solar energetic (E > 10 MeV) particle (SEP) events from far behind (≥25°) the west limb. We discuss 15 archival and recent examples of these prompt events, giving their source longitudes, onset and rise times, and associated coronal mass ejection (CME) speeds. Th…
The pulsating variable star population in DDO210
Sarajedini, Ata; Ordoñez, Antonio J.
We have probed the pulsating variable star content of the isolated Local Group dwarf galaxy, DDO210 (Aquarius), using archival Advanced Camera for Surveys/Hubble Space Telescope imaging in the F475W and F814W passbands. We find a total of 32 RR Lyrae stars (24 ab-type; 8 c-type) and 75 Cepheid variables. The mean periods of the ab-type and c-type …
Mechanical conditions and modes of paraglacial deep-seated gravitational spreading in Valles Marineris, Mars
Mège, Daniel; Makowska, Magdalena; Gueydan, Frédéric +1 more
Deep-seated gravitational spreading (DSGS) affects the slopes of formerly glaciated mountain ridges. On Mars, DSGS has played a key role in shaping the landforms of the giant Valles Marineris troughs. Though less spectacular, DSGS is common in terrestrial orogens, where understanding its mechanics is critical in the light of the ongoing climate ch…
Estimation of dust variability and scale height of atmospheric optical depth (AOD) in the Valles Marineris on Mars by Indian Mars Orbiter Mission (MOM) data
Chauhan, Prakash; Sarkar, S. S.; Mishra, Manoj K. +2 more
In this paper analyses of bright hazes observed inside Valles Marineris formed during mid-southern spring of Mars is presented. The analysis is performed by using data collected by Mars Colour Camera (MCC) onboard Indian Mars Orbiter Mission on orbits 34, 49 and 52 corresponding to the observation dates of October 28, December 5 and December 13, 2…
Multi-wavelength Lens Reconstruction of a Planck and Herschel-detected Star-bursting Galaxy
Baes, Maarten; Fu, Hai; Clements, David L. +21 more
We present a source-plane reconstruction of a Herschel and Planck-detected gravitationally lensed dusty star-forming galaxy (DSFG) at z = 1.68 using Hubble, Submillimeter Array (SMA), and Keck observations. The background submillimeter galaxy (SMG) is strongly lensed by a foreground galaxy cluster at z = 0.997 and appears as an arc with a length o…
Comparative ionospheric impacts and solar origins of nine strong geomagnetic storms in 2010-2015
Wood, Brian E.; Wang, Yi-Ming; Lean, Judith L. +1 more
For nine of the strongest geomagnetic storms in solar cycle 24 we characterize, quantify, and compare the impacts on ionospheric total electron content (TEC) and the U.S. Wide Area Augmentation System (WAAS) with the heliospheric morphology and kinematics of the responsible coronal mass ejections (CMEs) and their solar source regions. Regional TEC…
SEEDS Direct Imaging of the RV-detected Companion to V450 Andromedae, and Characterization of the System
Kuzuhara, M.; Tamura, M.; Ishii, M. +49 more
We report the direct imaging detection of a low-mass companion to a young, moderately active star V450 And, that was previously identified with the radial velocity (RV) method. The companion was found in high-contrast images obtained with the Subaru Telescope equipped with the HiCIAO camera and AO188 adaptive optics system. From the public ELODIE …
Cluster observations of reflected EMIC-triggered emission
Santolík, O.; Cornilleau-Wehrlin, N.; Masson, A. +2 more
On 19 March 2001, the Cluster fleet recorded an electromagnetic rising tone on the nightside of the plasmasphere. The emission was found to propagate toward the Earth and toward the magnetic equator at a group velocity of about 200 km/s. The Poynting vector is mainly oblique to the background magnetic field and directed toward the Earth. The propa…