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Observations of corotating solar wind structures at radio sounding by signals of the Rosetta and Mars Express spacecraft
Pätzold, M.; Bird, M. K.; Efimov, A. I. +3 more
In the implementation of the space projects Rosetta and Mars Express, a large-scale series of experiments has been carried out on radio sounding circumsolar plasma by decimeter ( S-band) and centimeter ( X-band) signals of the Rosetta comet probe (from October 3 to October 31, 2010) and the Mars Express satellite of Mars (from December 25, 2010 to…
Gas-to-dust ratios in massive star-forming galaxies at z ∼ 1.4
Iono, Daisuke; Hatsukade, Bunyo; Ohta, Kouji +3 more
We present results of 12CO(J = 2-1) observations toward four massive star-forming galaxies at z ∼ 1.4 with the Nobeyama 45 m radio telescope. The galaxies are detected with Spitzer/MIPS in 24 µm and Herschel/SPIRE in 250 µm and 350 µm, and they mostly reside in the main sequence. Their gas-phase metallicities derived b…
Simultaneously modelling far-infrared dust emission and its relation to CO emission in star-forming galaxies
Klessen, Ralf S.; Cormier, Diane; Roman-Duval, Julia +6 more
We present a method to simultaneously model the dust far-infrared (FIR) spectral energy distribution (SED) and the total infrared - carbon monoxide (CO) integrated intensity (SIR-ICO) relationship. The modelling employs a hierarchical Bayesian (HB) technique to estimate the dust surface density, temperature (Teff),…
A low-luminosity type-1 QSO sample . IV. Molecular gas contents and conditions of star formation in three nearby Seyfert galaxies
Eckart, Andreas; Moser, Lydia; Krips, Melanie +8 more
We present a pilot study of ~3'' resolution observations of low CO transitions with the Submillimeter Array in three nearby Seyfert galaxies, which are part of the low-luminosity quasi-stellar object (LLQSOs) sample consisting of 99 nearby (z = 0.06) type-1 active galactic nuclei (AGN) taken from the Hamburg/ESO quasi-stellar object (QSO) survey. …
New method for determining central axial orientation of flux rope embedded within current sheet using multipoint measurements
Chen, Tao; Li, ZhaoYu; Yan, GuangQing
A new method for determining the central axial orientation of a two-dimensional coherent magnetic flux rope (MFR) via multipoint analysis of the magnetic-field structure is developed. The method is devised under the following geometrical assumptions: (1) on its cross section, the structure is left-right symmetric; (2) the projected structure veloc…
Detailed study of SNR G306.3-0.9 using XMM-Newton and Chandra observations
Miceli, M.; Combi, J. A.; García, F. +3 more
Aims: We aim to study the spatial distribution of the physical and chemical properties of the X-ray emitting plasma of the supernova remnant (SNR) G306.3-0.9 in detail to obtain constraints on its ionization stage, the progenitor supernova explosion, and the age of the remnant.
Methods: We used combined data from XMM-Newton and Chandra o…
A new terminal guidance sensor system for asteroid intercept or rendezvous missions
Lyzhoft, Joshua; Basart, John; Wie, Bong
This paper presents the initial conceptual study results of a new terminal guidance sensor system for asteroid intercept or rendezvous missions, which explores the use of visual, infrared, and radar devices. As was demonstrated by NASA's Deep Impact mission, visual cameras can be effectively utilized for hypervelocity intercept terminal guidance f…
Modelling the Interior Structure of Enceladus Based on the 2014's Cassini Gravity Data
Taubner, R. -S.; Leitner, J. J.; Firneis, M. G. +1 more
We present a model for the internal structure of Saturn's moon Enceladus. This model allows us to estimate the physical conditions at the bottom of the satellite's potential subsurface water reservoir and to determine the radial distribution of pressure and gravity. This leads to a better understanding of the physical and chemical conditions at th…
XMM-Newton studies of the supernova remnant G350.0-2.0
Shternin, P.; Zyuzin, D.; Danilenko, A. +2 more
We report the results of XMM-Newton observations of the Galactic mixed-morphology supernova remnant G350.0-2.0. Diffuse thermal X-ray emission fills the north-western part of the remnant surrounded by radio shell-like structures. We did not detect any X-ray counterpart of the latter structures, but found several bright blobs within the diffuse emi…
Assessment of Models of Galactic Thermal Dust Emission Using COBE/FIRAS and COBE/DIRBE Observations
Kogut, A.; Odegard, N.; Chuss, D. T. +1 more
Accurate modeling of the spectrum of thermal dust emission at millimeter wavelengths is important for improving the accuracy of foreground subtraction for cosmic microwave background (CMB) measurements, for improving the accuracy with which the contributions of different foreground emission components can be determined, and for improving our under…