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Suzaku Discovery of Twin Thermal Plasma from the Tornado Nebula
ISM: individual (G357.7− 0.1)—ISM: jets and outfl ows—X-ray:ISM
2011/9/28
The Tornado nebula (G357.7-0.1) is a mysterious radio source with bright "head" and faint "tail" located in the direction of the Galactic center (GC) region. We here report the discovery of two diffus...
The Core-like Nature of HST-1 in the M87 Jet
polarization—galaxies: active—galaxies: individual (M87)—galaxies:jets —radio continuum: general
2011/9/28
We investigate the total flux density, spectral, polarization, and Faraday rotation variability of HST-1 in the M87 jet during the outburst from 2003 to 2007 through multi-epoch VLA observations at 8,...
Discovery of two L & T binaries with wide separations and peculiar photometric properties
Discovery binaries separations peculiar photometric properties
2011/9/28
We present spatially resolved photometric and spectroscopic observations of two wide brown dwarf binaries uncovered by the SIMP near-infrared proper motion survey. The first pair (SIMP J1619275+031350...
The bright end of the colour-magnitude relation of cluster galaxies
galaxies: clusters: general - galaxies: formation - galaxies: evolution
2011/9/27
We investigate the development of the red sequence (RS) of cluster galaxies by using a semi-analytic model of galaxy formation. Results show good agreement between the general trend of the simulated R...
Application of speckle and (multi-object) multi-frame blind deconvolution techniques on imaging and imaging spectropolarimetric data
Sun: photosphere – Sun: spectropolarimeters
2011/9/27
We test the effects of reconstruction techniques on 2D data to determine the best approach. We obtained a time-series of spectropolarimetric data in the Fe I line at 630.25 nm with the Goettingen Fabr...
Near-Infrared Reverberation by Dusty Clumpy Tori in Active Galactic Nuclei
Near-Infrared Reverberation Dusty Clumpy Active Galactic Nuclei
2011/9/27
According to recent models, the accretion disk and black hole in active galactic nuclei are surrounded by a clumpy torus. We investigate the NIR flux variation of the torus in response to a UV flash f...
Multiwavelength campaign on Mrk 509. VI. HST/COS observations of the far-ultraviolet spectrum
Galaxies: Active – Galaxies: Individual (Mrk 509) – Galaxies: Quasars: Absorption Lines – Galaxies: Seyfert –Ultraviolet: Galaxies – X-Rays: Galaxies
2011/9/27
We present medium resolution (R~20,000) HST/COS ultraviolet spectra covering 1155-1760 A of the Seyfert 1 Mrk 509 obtained simultaneously with a Chandra/LETGS spectrum as part of a multiwavelength cam...
Multiwavelength campaign on Mrk 509. IV. Optical-UV-X-ray variability and the nature of the soft X-ray excess
galaxies: active – galaxies: nuclei – galaxies: Seyfert – quasars: individual: Mrk 509 – X-rays: galaxies
2011/9/27
We present the analysis of XMM-Newton and Swift optical-UV and X-ray observations of the Seyfert-1/QSO Mrk 509, part of an unprecedented multi-wavelength campaign, investigating the nuclear environmen...
Multiwavelength campaign on Mrk 509. II. Analysis of high-quality Reflection Grating Spectrometer spectra
Galaxies: active – quasars: absorption lines – X-rays: general
2011/9/27
We study the bright Seyfert 1 galaxy Mrk~509 with the Reflection Grating Spectrometers (RGS) of XMM-Newton using the RGS multi-pointing mode of XMM-Newton for the first time in order to constrain the ...
Discovering the missing 2.2
Discovering missing quasars combining variability optical/near-IR colors
2011/9/27
The identifications of quasars in the redshift range 2.2
We report the results of a recent study of young star clusters (YSCs) in luminous blue compact galaxies (BCGs). The age distributions of the YSCs suggest that the starburst episode in Haro 11, ESO 185...
Effective field theory for hydrodynamics: thermodynamics, and the derivative expansion
Effective field theory hydrodynamics:thermodynamics derivative expansion
2011/10/14
We consider the low-energy effective field theory describing the infrared dynamics of non-dissipative fluids. We extend previous work to accommodate conserved charges, and we clarify the matching betw...
Distribution of High Mass X-ray Binaries in the Milky Way
Distribution High Mass X-ray Binaries Milky Way
2011/9/27
The INTEGRAL satellite, observing the sky at high energy, has quadrupled the number of supergiant X-ray Binaries known in the Galaxy and has revealed new populations of previously hidden High Mass X-r...
Dark matter from primordial metric fields and the term (grad g_{00})^2
Dark matter primordial metric fields
2011/9/27
It is a well-known truism, inspired on the general theory of relativity, that gravity gravitates. Here we suggest the possibility that dark matter may be caused by the gravitation of the metric. At fi...