Search Publications
Missions
Journals
Publication Years
Forbush Decrease Prediction Based on Remote Solar Observations
Vršnak, B.; Dumbović, M.; Čalogović, J.
We employ remote observations of coronal mass ejections (CMEs) and the associated solar flares to forecast the CME-related Forbush decreases, i.e. short-term depressions in the galactic cosmic-ray flux. The relation between the Forbush effect at Earth and remote observations of CMEs and associated solar flares is studied via a statistical analysis…
The Herschel Virgo Cluster Survey. XIX. Physical properties of low luminosity FIR sources at z < 0.5
Bizzocchi, Luca; De Looze, Ilse; Baes, Maarten +12 more
Context. The star formation rate is a crucial parameter for the investigation galaxy evolution. At low redshift the cosmic star formation rate density declines smoothly, and massive active galaxies become passive, reducing their star formation activity. This implies that the bulk of the star formation rate density at low redshift is mainly driven …
High-energy properties of the high-redshift flat spectrum radio quasar PKS 2149-306
D'Ammando, F.; Orienti, M.
We investigate the γ-ray and X-ray properties of the flat spectrum radio quasar PKS 2149-306 at redshift z = 2.345. A strong γ-ray flare from this source was detected by the Large Area Telescope on board the Fermi Gamma-ray Space Telescope satellite in 2013 January, reaching on January 20 a daily peak flux of (301 ± 36) × 10-8 ph cm
A newly discovered radio halo in merging cluster MACS J2243.3-0935
Han, J. L.; Wen, Z. L.; Oozeer, N. +2 more
We report the discovery of a radio halo in the massive merging cluster MACSJ2243.3-0935, as well as a new radio relic candidate, using the Giant Meterwave Radio Telescope and the Karoo Array Telescope-7 telescope. The radio halo is coincident with the cluster X-ray emission and has a largest linear scale of approximately 0.9 Mpc. We measure a flux…
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…