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Herschel-ATLAS: the far-infrared properties and star formation rates of broad absorption line quasi-stellar objects
Ivison, R. J.; Clements, D. L.; Cooray, A. +20 more
We have used data from the Herschel Astrophysical Terahertz Large-Area Survey (H-ATLAS) at 250, 350 and 500 µm to determine the far-infrared (FIR) properties of 50 broad absorption line quasars (BAL QSOs). Our sample contains 49 high-ionization BAL QSOs (HiBALs) and one low-ionization BAL QSO (LoBAL) which are compared against a sample of 32…
Energetic electron observations of Rhea’s magnetospheric interaction
Gurnett, D. A.; Persoon, A. M.; Krupp, N. +12 more
Saturn’s moon Rhea is thought to be a simple plasma absorber, however, energetic particle observations in its vicinity show a variety of unexpected and complex interaction features that do not conform with our current understanding about plasma absorbing interactions. Energetic electron data are especially interesting, as they contain a series of …
Optical TiO and VO Band Emission in Two Embedded Protostars: IRAS 04369+2539 and IRAS 05451+0037
Hillenbrand, Lynne A.; Knapp, Gillian R.; Rebull, Luisa M. +2 more
Archival spectra from the Sloan Digital Sky Survey of two optically faint flat-spectrum protostars, IRAS 04369+2539 and IRAS 05451+0037, show strong emission-line features including—notably—clear and broad emission across several molecular bands of TiO and VO. The molecular emission is indicative of dense, warm circumstellar gas and has been seen …
The oblique impact Hale and its consequences on Mars
Schultz, Peter H.; Wrobel, Kelly E.
Highly oblique impacts represent a rare and special class of impact events manifested as elliptical craters preserved on present-day planetary surfaces. Crater excavation in highly oblique impacts differs from that of standard vertical impacts due to early time asymmetries imparted by the downrange-directed coupling of energy between the projectil…
Radiative equilibrium in solar prominences reconsidered
Heinzel, P.; Anzer, U.
Aims: We reconsider the question which kinetic temperatures can lead to prominence configurations that are in radiative equilibrium. We compare these temperatures to those from other calculations.
Methods: For this purpose we solved the full non-LTE radiative-transfer problem for a gas consisting of hydrogen, helium and calcium. We used …
Suzaku X-Ray Imaging of the Extended Lobe in the Giant Radio Galaxy NGC 6251 Associated with the Fermi-LAT Source 2FGL J1629.4+8236
Cheung, C. C.; Kataoka, J.; Stawarz, Ł. +7 more
We report the results of a Suzaku X-ray imaging study of NGC 6251, a nearby giant radio galaxy with intermediate FR I/II radio properties. Our pointing direction was centered on the γ-ray emission peak recently discovered with the Fermi Large Area Telescope (LAT) around the position of the northwest (NW) radio lobe 15 arcmin offset from the nucleu…
Multidimensional nonlinear mirror-mode structures in the Earth's magnetosheath
Omura, Yoshiharu; Shoji, Masafumi; Lee, Lou-Chuang
We performed two-dimensional (2D) and three-dimensional (3D) hybrid simulations in open boundary models to study the nonlinear mirror-mode structures driven by the temperature anisotropy (T⊥/T∥> 1) of protons in the magnetosheath. In the open systems, because of the propagation of EMIC waves, we obtain the clearer non-prop…
Observations of Plasma Upflow in a Warm Loop with Hinode/EIS
Del Zanna, Giulio; Tripathi, Durgesh; Mason, Helen E. +1 more
A complete understanding of Doppler shift in active region loops can help probe the basic physical mechanism involved into the heating of those loops. Here, we present observations of upflows in coronal loops detected in a range of temperatures (log T = 5.8-6.2). The loop was not discernible above these temperatures. The speed of upflow was strong…
A detailed X-ray investigation of ζ Puppis. I. The dataset and some preliminary results
Nazé, Y.; Rauw, G.; Flores, C. A.
Aims: One of the closest and brightest massive stars, ζ Puppis, was the first early-type object observed by the current generation of X-ray observatories. These observations provided some surprising results, partly confirming the theoretical predictions while simultaneously unveiling some problematic mismatches with expectations. In this seri…
Interstellar Silicate Dust in the z = 0.89 Absorber toward PKS 1830-211: Crystalline Silicates at High Redshift?
York, Donald G.; Kulkarni, Varsha P.; Welty, Daniel E. +3 more
We present evidence of a >10σ detection of the 10 µm silicate dust absorption feature in the spectrum of the gravitationally lensed quasar PKS 1830-211, produced by a foreground absorption system at redshift 0.886. We have examined more than 100 optical depth templates, derived from both observations of Galactic and extragalactic sources …