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The Herschel view of the environment of the radio galaxy 4C+41.17 at z = 3.8
Meisenheimer, K.; Stern, D.; Greve, T. R. +16 more
We present Herschel observations at 70, 160, 250, 350 and 500 µm of the environment of the radio galaxy 4C+41.17 at z = 3.792. About 65 per cent of the extracted sources are securely identified with mid-infrared sources observed with the Spitzer Space Telescope at 3.6, 4.5, 5.8, 8 and 24 µm. We derive simple photometric redshifts, also…
Swift Observations of 1FGL J1018.6-5856
An, Hongjun; Kaspi, Victoria M.; Harrison, Fiona A. +1 more
We report on X-ray properties of the gamma-ray binary 1FGL J1018.6-5856 using observations obtained with the Swift X-ray telescope. Using 54 observations made between MJD 55575 and 55984, we find that the X-ray flux is modulated at a period of 16.57 ± 0.11 days, which is consistent with previous reports based on gamma-ray data. We find that the X-…
Low-Resolution Spectrum of the Zodiacal Light with the AKARI InfraRed Camera
Sakon, Itsuki; Matsuura, Shuji; Wada, Takehiko +3 more
We present near- and mid-infrared zodiacal light spectra obtained with the AKARI Infra-Red Camera (IRC). A catalog of 278 spectra of the diffuse sky covering a wide range of Galactic and ecliptic latitudes was constructed. The wavelength range of this catalog is
Single-field inflation à la generalized Chaplygin gas
del Campo, Sergio
In the simplest scenario for inflation, i.e. in the single-field inflation, it is presented an inflaton field with properties equivalent to a generalized Chaplygin gas. Their study is performed using the Hamilton-Jacobi approach to cosmology. The main results are contrasted with the measurements recently released by the Planck data, combined with …
Orbital radar, imagery, and atmospheric modeling reveal an aeolian origin for Abalos Mensa, Mars
Spiga, A.; Holt, J. W.; Brothers, T. C.
Icy deposits surrounding Planum Boreum, Mars, contain crucial information for deciphering paleoclimate and past geologic processes at the martian north pole. One such deposit, Abalos Mensa, is an enigmatic wedge of material located near the ~ 1 km high Rupes Tenuis. Its unique location and lobate morphology have fostered formation hypotheses that …
Chandra Identification of 26 New Black Hole Candidates in the Central Region of M31
Murray, S. S.; Garcia, M. R.; Barnard, R.
We have previously identified 10 M31 black hole candidates (BHCs) in M31 from their X-ray properties alone. They exhibit "hard state" emission spectra that are seen at luminosities lsim10% Eddington in X-ray binaries (XBs) containing a neutron star (NS) or black hole, at luminosities that significantly exceed the NS threshold. Nine of these are as…
Generation of periodic signatures at Saturn through Titan's interaction with the centrifugal interchange instability
Winglee, R. M.; Harnett, E.; Snowden, D. +3 more
The origin of the periodicities in the radio, plasma, and magnetic fields of Saturn has long been debated. Given the high degree of alignment of Saturn's dipole with its rotation axis, no strong rotational periodicities are expected. However, Cassini data demonstrated the existence of such periodicities not only in Saturn's kilometric radio emissi…
Compositional effects in Titan's thermospheric gravity waves
Cui, J.; Müller-Wodarg, I. C. F.; Lian, Y.
In Titan's upper atmosphere, the density profiles of several constituents (N2, CH4, H2, and 29N2) as measured by the Cassini Ion Neutral Mass Spectrometer show periodical structures which we interpret as internal gravity waves. Compositional effects are frequently seen in the data, in which th…
Inferring the magnetic field vector in the quiet Sun. III. Disk variation of the Stokes profiles and isotropism of the magnetic field
Borrero, J. M.; Kobel, P.
Recent investigations of the magnetic field vector properties in the solar internetwork have provided diverging results. While some works found that the internetwork is mostly pervaded by horizontal magnetic fields, other works argued in favor of an isotropic distribution of the magnetic field vector. Motivated by these seemingly contradictory res…
Nighttime ionosphere caused by meteoroid ablation and solar wind electron-proton-hydrogen impact on Mars: MEX observation and modeling
Haider, S. A.; Pandya, B. M.; Molina-Cuberos, G. J.
report that radio science (RS) experiment onboard Mars Express (MEX) has observed three plasma layers in the nighttime ionosphere of Mars at altitudes ~80-100 km, ~120 km, and ~160 km, which are reproduced by model calculation due to impact of meteoroid, solar wind proton, and electron, respectively. The densities of 21 ions (Mg+, Fe