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Cosmic rays from multi-wavelength observations of the Galactic diffuse emission
Orlando, Elena
Cosmic rays (CRs) generate diffuse emission while interacting with the Galactic magnetic field (B-field), the interstellar gas and the radiation field. This diffuse emission extends from radio, microwaves, through X-rays, to high-energy gamma rays. Diffuse emission has considerably increased the interest of the astrophysical community due to recen…
A Search for the Far-Infrared Ghost of C/2010 X1 (Elenin) with Herschel
Altieri, Bruno; Müller, Thomas; Kidger, Mark R. +1 more
Observations of Comet C/2010 X1 (Elenin) in August 2011 showed a pattern of evolution of coma morphology into an expanding, amorphous cloud of rapidly decreasing surface brightness shortly before perihelion passage, similar to C/1999 S4 (LINEAR) in 2000. However, the comet's difficult viewing geometry at the time of disruption made it impossible t…
Rosetta mission: Space oddity
Georgescu, Iulia
Identifying Surface Changes on HRSC Images of the Mars South Polar Residual CAP (sprc)
Muller, Jan-Peter; Putri, Alfiah Rizky Diana; Sidiropoulos, Panagiotis
The surface of Mars has been an object of interest for planetary research since the launch of Mariner 4 in 1964. Since then different cameras such as the Viking Visual Imaging Subsystem (VIS), Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC), and Mars Reconnaissance Orbiter (MRO) Context Camera (CTX) and High Resolution Imaging Science Experim…
On the reality of broad iron L lines from the narrow line Seyfert 1 galaxies 1H 0707-495 and IRAS 13224-3809.
Misra, R.; Dewangan, G. C.; Pawar, P. K. +2 more
We performed time resolved spectroscopy of 1H0707-495 and IRAS 13224-3809 using long XMM-Newton observations. These are strongly variable narrow line Seyfert 1 galaxies and show broad features around 1 keV that has been interpreted as relativistically broad Fe L$\alpha$ lines. Such features are not clearly observed in other AGN despite sometimes h…
Performance of the mission critical Electrical Support System (ESS) which handled communications and data transfer between the Rosetta Orbiter and its Lander Philae while en route to and at comet 67P/Churyumov-Gerasimenko
McKenna-Lawlor, Susan; Schmidt, Walter; Geurts, Koen +4 more
The Electrical Support System (ESS), which was designed and built in Ireland, handled commands transmitted from the Rosetta spacecraft to the Command and Data Management System (CDMS) aboard its Lander Philae during a ten year Cruise Phase to comet 67P/Churyumov-Gerasimenko as well as at the comet itself. The busy Cruise Phase included three Earth…
Multifrequency Studies of Active Galactic Nuclei in the Planck Satellite Era
Lähteenmäki, Anne; the Planck Collaboration
The multi-epoch single-survey Planck satellite data have given a rare glimpse into how the radio spectra of active galactic nuclei (AGN) evolve in time. Using Planck and simultaneous auxiliary radio data ranging from 1 GHz to 857 GHz, spectra for 104 bright northern extragalactic radio sources (most of them AGN) have been assembled; in these, the …
Calibration of the microcalorimeter spectrometer on-board the Hitomi (Astro-H) observatory (invited)
de Vries, C. P.; Tsujimoto, M.; Ishisaki, Y. +21 more
The Hitomi Soft X-ray Spectrometer (SXS) was a pioneering non-dispersive imaging x-ray spectrometer with 5 eV FWHM energy resolution, consisting of an array of 36 silicon-thermistor microcalorimeters at the focus of a high-throughput soft x-ray telescope. The instrument enabled astrophysical plasma diagnostics in the 0.3-12 keV band. We introduce …
Reply to comment by Pätzold et al. on "Mars Express radio-occultation data: A novel analysis approach"
Witasse, O.; Blelly, P. -L.; Grandin, M. +1 more
We reply to the Comment by Pätzold et al. on our paper presenting a new analysis approach for Mars Express radio-occultation data. We address each of the main comments, showing that none of them invalidates the method itself, but rather, they underline aspects which could be considered to improve the model. One major issue raised by the Comment is…
Multiwavelength studies of X-ray selected extragalactic sample.
Mickaelian, A. M.; Abrahamyan, H. V.; Paronyan, G. M. +2 more
The joint catalogue of Active Galactic Nuclei selected from optical identifications of X-ray sources was created as a combination of two samples: Hamburg-ROSAT Catalogue (HRC) and Byurakan-Hamburg-ROSAT Catalogue (BHRC). Both are based on optical identifications of X-ray sources from ROSAT catalogues using low-dispersion spectra of Hamburg Quasar …