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SphinX Measurements of the 2009 Solar Minimum X-Ray Emission
Kuzin, S.; Phillips, K. J. H.; Reale, F. +9 more
The SphinX X-ray spectrophotometer on the CORONAS-PHOTON spacecraft measured soft X-ray emission in the 1-15 keV energy range during the deep solar minimum of 2009 with a sensitivity much greater than GOES. Several intervals are identified when the X-ray flux was exceptionally low, and the flux and solar X-ray luminosity are estimated. Spectral fi…
Automated cloud tracking system for the Akatsuki Venus Climate Orbiter data
Imamura, Takeshi; Takagi, Masahiro; Kouyama, Toru +3 more
Japanese Venus Climate Orbiter, Akatsuki, is cruising to approach to Venus again although its first Venus orbital insertion (VOI) has been failed. At present, we focus on the next opportunity of VOI and the following scientific observations.We have constructed an automated cloud tracking system for processing data obtained by Akatsuki in the prese…
YSO jets in the Galactic plane from UWISH2 - I. MHO catalogue for Serpens and Aquila
Froebrich, D.; Ioannidis, G.
Jets and outflows from young stellar objects (YSOs) are important signposts of currently ongoing star formation. In order to study these objects, we are conducting an unbiased survey along the Galactic plane in the 1-0 S(1) emission line of molecular hydrogen at 2.122 µm using the United Kingdom Infrared Telescope. In this paper, we are focu…
Impact of Systematics on SZ-Optical Scaling Relations
Miller, C. J.; Shaw, L.; Nord, B. +2 more
One of the central goals of multi-wavelength galaxy cluster cosmology is to unite all cluster observables to form a consistent understanding of cluster mass. Here, we study the impact of systematic effects from optical cluster catalogs on stacked Sunyaev-Zel'dovich (SZ) signals. We show that the optically predicted Y-decrement can vary by as much …
First Detection of Hydrogen Chloride Toward Protostellar Shocks
Codella, C.; Ceccarelli, C.; Caux, E. +8 more
We present the first detection of hydrogen chloride in a protostellar shock by observing the fundamental transition at 626 GHz with the HIFI spectrometer. We detected two of the three hyperfine lines from which we derived a line opacity <=1. Using a non-local thermodynamic equilibrium large velocity gradient code, we constrained the HCl column …
Rotational modulation and local time dependence of Saturn's infrared H3+ auroral intensity
Brown, R. H.; Baines, K. H.; Lamy, L. +10 more
Planetary auroral emissions reveal the configuration of magnetospheric field-aligned current systems. In this study, Cassini Visual and Infrared Mapping Spectrometer (VIMS) observations of Saturn's pre-equinox infrared H3+ aurorae were analysed to show (a) rotational modulation of the auroral intensity in both hemispheres and…
Accretion flow diagnostics with X-ray spectral timing: the hard state of SWIFT J1753.5-0127
Maccarone, T. J.; Uttley, P.; Cassatella, P.
Recent XMM-Newton studies of X-ray variability in the hard states of black hole X-ray binaries (BHXRBs) indicate that the variability is generated in the 'standard' optically thick accretion disc that is responsible for the multi-colour blackbody emission. The variability originates in the disc as mass-accretion fluctuations and propagates through…
A Three-dimensional View of the Remnant of Nova Persei 1901 (GK Per)
Corradi, R. L. M.; Santander-García, M.; Rodríguez-Gil, P. +4 more
We present a kinematical study of the optical ejecta of GK Per. It is based on proper-motion measurements of 282 knots from ~20 images spanning 25 years. Doppler shifts are also computed for 217 knots. The combination of proper motions and radial velocities allows a unique three-dimensional view of the ejecta to be obtained. The main results are a…
Spatially resolved X-ray spectroscopy and modeling of the nonthermal emission of the pulsar wind nebula in G0.9+0.1
Stegmann, C.; Eger, P.; Schöck, F. M. +3 more
Aims: We performed a spatially resolved spectral X-ray study of the pulsar wind nebula (PWN) in the supernova remnant G0.9+0.1. Furthermore, we modeled its nonthermal emission in the X-ray and very high-energy (VHE, E > 100 GeV) γ-ray regime.
Methods: Using Chandra ACIS-S3 data, we investigated the east-west dependence of the spectral…
Statistics and implications of substructure detected in a representative sample of X-ray clusters
Böhringer, H.; Smith, G. P.; Chon, G.
We present a morphological study of 35 X-ray luminous galaxy clusters at 0.15 < z < 0.3, selected in a similar manner to the Local Cluster Substructure Survey (LoCuSS), for which deep XMM-Newton observations are available. We characterise the structure of the X-ray surface brightness distribution of each cluster by measuring both their power…