Search Publications
Mission to Mars searches for life
Banks, Michael
A joint European and Russian probe to study the atmosphere and surface of Mars successfully launched last month from the Baikonur Cosmodrome in Kazakhstan. The Trace Gas Orbiter (TGO) - a collaboration between the European Space Agency (ESA) and the Russian space agency Roscosmos - also includes the entry, descent and landing demonstrator module (…
Generalized double-gradient model of flapping oscillations: Oblique waves
Korovinskiy, D. B.; Kiehas, S. A.
The double-gradient model of flapping oscillations is generalized for oblique plane waves, propagating in the equatorial plane. It is found that longitudinal propagation (ky = 0) is prohibited, while transversal (kx = 0) or nearly transversal waves should possess a maximum frequency, diminishing with the reduction of | k…
Batch Co-Registration of Mars High-Resolution Images to HRSC MC11-E Mosaic
Muller, Jan-Peter; Sidiropoulos, Panagiotis
Four NASA missions over the last forty years with onboard instruments for high-resolution orbital imaging have achieved both global coverage (with 6m CTX, 20m THEMIS-VIS and >8m Viking Orbiter cameras) as well as imaging with very high resolution in specific regions of interest (e.g. 25cm HiRISE and ≈1.5-12m MOC-NA cameras). Overall, this set o…
An investigation of the RCB star candidate GDS J0702414-023501
Bernhard, K.; Hummerich, S.
2MASS J07024146-0235017 = GDSJ0702414-023501 was included in the "Catalogue enriched with R CrB stars" on grounds of its near- and mid-infrared colours. The object, which corresponds to the carbon star IRAS 07001-0230 = CGCS 6197, has been found to exhibit large amplitude variability in its Bochum Galactic Disk Survey light curve. Taking into acco…
Estudio de fuentes de rayos X asociadas a la fuente de rayos γ no identificada 2FGL J0534.8-0548
Combi, J. A.; García, F.; Kornecki, P.
In this paper, we present a preliminary study of four point-like X-ray sources detected with XMM-Newton. Three of them lie within the ellipse corresponding to the 95 confidence contour of the unidentified -ray source 2FGL J0534.80548c, detected with the Fermi telescope. The fourth, named 2XMM J053514.8055143 and identified with a binary system, is…
Matched-filtering line search methods applied to Suzaku data
Enoto, Teruaki; Ohashi, Takaya; Yamada, Shin'ya +2 more
A detailed search for emission and absorption lines and an assessment of their upper limits are performed for Suzaku data. The method utilizes a matched-filtering approach to maximize the signal-to-noise ratio for a given energy resolution, which could be applicable to many types of line search. We first applied it to well-known active galactic nu…
Evolution of clustered magnetic nulls in a turbulent-like reconnection region in the magnetotail
Dunlop, Malcolm; He, Jiansen; Wang, Xin +6 more
Magnetic null points and flux ropes play important roles in the three-dimensional process of magnetic reconnection. In this study, a cluster of null points are reconstructed in the reconnection region in the magnetotail by applying a fitting-reconstruction method to measurements from the Cluster mission. The number of reconstructed null points var…
Ambition: A Risky Adventure in Science Communication
McCaughrean, M.
This article explores how the European Space Agency made a short science fiction film about the Rosetta mission to engage audiences in the core scientific and philosophical questions of the mission, and to manage expectations regarding the risky landing of Philae on the surface of Comet 67P/Churyumov-Gerasimenko.
Observaciones combinadas XMM-Newton/Chandra del remanente de supernova G306.3-0.9
Filócomo, A.; Combi, J. A.; García, F. +3 more
In this paper we study the spatial and spectral distribution of the physical and chemical properties of the supernova remnant G306.3-0.9 by using data of the X-rays telescopes XMM-Newton and Chandra, which we complement with radio and infrared information in order to study the morphology of the source and the effect of the shock wave in the intere…
Interfacial Tension-Driven Differentiation-(ITDD) may result in a low-density central region inside kilometer-sized bodies
Arias, Francisco J.
Interfacial Tension-Driven Differentiation, (ITDD), and its possible significance with regards to the interior structures of kilometer-sized bodies is discussed. Using a simple physical and geometrical model, an analytical expression for the conditions in which ITDD can occur is derived. It is shown that ITDD coupled with internal convection can l…