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Lessons Learned from the SD2 Operations on the Comet 67/P
Di Lizia, P.; Bernelli-Zazzera, F.; Ercoli Finzi, A.
This work deals with the space systems devoted to drilling and sampling of low-gravity extra-terrestrial soils and, in particular, with the cometary instrument SD2 (Sampler, Drill and Distribution subsystem) onboard the lander Philae of Rosetta mission, which was in charge to drill and sample the comet 67/P Churyumov-Gerasimenko. The behaviour of …
Optimizing the Distribution of Tie Points for the Bundle Adjustment of HRSC Image Mosaics
Bostelmann, J.; Heipke, C.; Breitkopf, U.
For a systematic mapping of the Martian surface, the Mars Express orbiter is equipped with a multi-line scanner: Since the beginning of 2004 the High Resolution Stereo Camera (HRSC) regularly acquires long image strips. By now more than 4,000 strips covering nearly the whole planet are available. Due to the nine channels, each with different viewi…
Probing relativistic effects in the central engine of AGN
Miniutti, G.; Sanfrutos, M.
Active Galactic Nuclei (AGN) are perfect laboratories to check General Relativity (GR) effects by using Broad Line Region (BLR) clouds eclipses to probe the innermost regions of the accretion disk. A new relativistic X-ray spectral model for X-ray eclipses is introduced. First we present the different observables that are involved in X-ray eclipse…
Small-Scale Structure of the Zodiacal Dust Cloud Observed in Far-Infrared with Akari
Nakagawa, Takao; Doi, Yasuo; Takita, Satoshi +9 more
The study of variations of low energy cosmic helium's flux (up to 6 MeV) due to solar activity
Shayan, M.; Davoudifar, P.; Bagheri, Z.
In General, the flux of low energy cosmic rays varies with time due to solar activities. The cosmic particle fluxes were studied using data of satellites near the Earth. In this work, first we studied the variations of particle fluxes from 1 Jan to 31 Dec 2000 and 35 events were selected. Then we proposed a relation for cosmic particle flux as a f…
a Systematic Study of Dust in Early-Type Galaxies with Akari
Oyabu, Shinki; Yamagishi, Mitsuyoshi; Kaneda, Hidehiro +3 more
Proton radiation damage assessment of a CCD for use in a Ultraviolet and Visible Spectrometer
Hathi, B.; Patel, M.; Gow, J. P. D. +2 more
This paper describes the radiation environment and radiation damage analysis performed for the Nadir and Occultation for MArs Discovery (NOMAD) Ultraviolet and Visible Spectrometer (UVIS) channel launched onboard the ExoMars Trace Gas Orbiter (TGO) in 2016. The aim of the instrument is to map the temporal and spatial variation of trace gases such …
Searching for Ulirgs by Using Akari and Wise
Matsuhara, Hideo; Koyama, Shuhei
Multi-frequency databases for AGN investigation - Results and perspectives
La Mura, Giovanni; Berton, Marco; Chen, Sina +5 more
Active Galactic Nuclei (AGNs) are characterized by emission of radiation over more than 10 orders of magnitude in frequency. Therefore, the execution of extensive surveys of the sky, with different types of detectors, is providing the attractive possibility to identify and to investigate the properties of AGNs on very large statistical samples. Th…
Probing Star Formation in Ultraluminous Infrared Galaxies Using Akari Near-Infrared Spectroscopy
Nakagawa, Takao; Isobe, Naoki; Shirahata, Mai +1 more