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Chandra High-resolution observations of CID-42, a Candidate Recoiling Supermassive Black Hole
Salvato, M.; Vignali, C.; Gilli, R. +15 more
We present Chandra High Resolution Camera observations of CID-42, a candidate recoiling supermassive black hole (SMBH) at z = 0.359 in the COSMOS survey. CID-42 shows two optical compact sources resolved in the HST/ACS image embedded in the same galaxy structure and a velocity offset of ~1300 km s-1 between the Hβ broad and narrow emiss…
Automatic Detection and Tracking of Coronal Mass Ejections. II. Multiscale Filtering of Coronagraph Images
Morgan, Huw; Gallagher, Peter T.; Habbal, Shadia R. +1 more
Studying coronal mass ejections (CMEs) in coronagraph data can be challenging due to their diffuse structure and transient nature, and user-specific biases may be introduced through visual inspection of the images. The large amount of data available from the Solar and Heliospheric Observatory (SOHO), Solar TErrestrial RElations Observatory (STEREO…
X-Ray Observations of the Supernova Remnant W28 with Suzaku. I. Spectral Study of the Recombining Plasma
Koyama, Katsuji; Sawada, Makoto
We present Suzaku results of the mixed-morphology supernova remnant W 28. The X-ray spectra of the central region of W 28 exhibit many bright emission lines from highly ionized atoms. An optically thin thermal plasma in collisional ionization equilibrium, either of single temperature or multi temperatures, failed to reproduce the data with line-li…
Herschel far-infrared observations of the Carina Nebula complex. I. Introduction and global cloud structure
Preibisch, T.; Roccatagliata, V.; Gaczkowski, B. +1 more
Context. The Carina Nebula represents one of the most massive star forming regions known in our Galaxy and displays a high level of feedback from the large number of very massive stars. While the stellar content is now well known from recent deep X-ray and near-infrared surveys, the properties of the clouds remained rather poorly studied until tod…
Radiation-driven winds of hot luminous stars XVI. Expanding atmospheres of massive and very massive stars and the evolution of dense stellar clusters
Pauldrach, A. W. A.; Hoffmann, T. L.; Vanbeveren, D.
Context. Starbursts play an essential role in the evolution of galaxies. In these environments, massive stars, with their short lifetimes, are of particular importance. The stellar winds of massive stars significantly influence not only on their surroundings, but the associated mass loss also profoundly affects the evolution of the stars themselve…
Spitzer- and Herschel-based Spectral Energy Distributions of 24 µm Bright z ~ 0.3-3.0 Starbursts and Obscured Quasars
Fadda, Dario; Yan, Lin; Sajina, Anna +2 more
In this paper, we characterize the infrared spectral energy distributions (SEDs) of mid-IR-selected z ~ 0.3-3.0 and L IR ~ 1011-1013 L ⊙ galaxies, and study how their SEDs differ from those of local and high-z analogs. Infrared SEDs depend both on the power source (AGN or star formation) and the dust dis…
Rogue wave in Titan's atmosphere
Moslem, W. M.; El-Labany, S. K.; El-Bedwehy, N. A. +2 more
Rogue wave in a collisionless, unmagnetized electronegative plasma is investigated. For this purpose, the basic set of fluid equations is reduced to the Korteweg-de Vries (KdV) equation. However, when the frequency of the carrier wave is much smaller than the ion plasma frequency then the KdV equation is also used to study the nonlinear evolution …
Tidally-induced melting events as the origin of south-pole activity on Enceladus
Čadek, Ondřej; Tobie, Gabriel; Běhounková, Marie +1 more
The intense activity at the south pole of Enceladus hints at an internal water reservoir. However, there is no direct evidence of liquid water at present and its long-term stability in the interior remains problematic. By modeling heat production and transfer in the ice shell in a spherical geometry, we show that tidal heating naturally leads to a…
Low-altitude Reconnection Inflow-Outflow Observations during a 2010 November 3 Solar Eruption
Reeves, Katharine K.; Savage, Sabrina L.; McKenzie, David E. +3 more
For a solar flare occurring on 2010 November 3, we present observations using several SDO/AIA extreme-ultraviolet (EUV) passbands of an erupting flux rope followed by inflows sweeping into a current sheet region. The inflows are soon followed by outflows appearing to originate from near the termination point of the inflowing motion—an observation …
Distinguishing between HII regions and planetary nebulae with Hi-GAL, WISE, MIPSGAL, and GLIMPSE
García-Lario, P.; Zavagno, A.; Barlow, M. J. +2 more
Context. H II regions and planetary nebulae (PNe) both emit at radio and infrared (IR) wavelengths, and angularly small H II regions can be mistaken for PNe. This problem of classification is most severe for H II regions in an early evolutionary stage, those that are extremely distant, or those that are both young and distant. Previous work has sh…