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The Three-dimensional Analysis of Hinode Polar Jets using Images from LASCO C2, the Stereo COR2 Coronagraphs, and SMEI
Jackson, B. V.; Buffington, A.; Hick, P. P. +3 more
Images recorded by the X-ray Telescope on board the Hinode spacecraft are used to provide high-cadence observations of solar jetting activity. A selection of the brightest of these polar jets shows a positive correlation with high-speed responses traced into the interplanetary medium. LASCO C2 and STEREO COR2 coronagraph images measure the coronal…
A Clumpy Stellar Wind and Luminosity-dependent Cyclotron Line Revealed by the First Suzaku Observation of the High-mass X-Ray Binary 4U 1538-522
Hemphill, Paul B.; Rothschild, Richard E.; Fürst, Felix +3 more
We present results from the first Suzaku observation of the high-mass X-ray binary 4U 1538-522. The broadband spectral coverage of Suzaku allows for a detailed spectral analysis, characterizing the cyclotron resonance scattering feature at 23.0 ± 0.4 keV and the iron Kα line at 6.426 ± 0.008 keV, as well as placing limits on the strengths of the i…
Around the Ring We Go: The Cold, Dense Ring of Molecular Gas in NGC 1614
Wilson, Christine D.; Iono, Daisuke; Matsushita, Satoki +2 more
We present high-resolution archival Atacama Large Millimeter/submillimeter Array (ALMA) 12CO J = 3-2 and J = 6-5 and HCO+ J = 4-3 observations and new CARMA 12CO and 13CO J = 1-0 observations of the luminous infrared galaxy NGC 1614. The high-resolution maps show the previously identified ring-like struc…
Constraining the Lyα Escape Fraction with Far-infrared Observations of Lyα Emitters
Ivison, R. J.; Wang, L.; Bock, J. +22 more
We study the far-infrared properties of 498 Lyα emitters (LAEs) at z = 2.8, 3.1, and 4.5 in the Extended Chandra Deep Field-South, using 250, 350, and 500 µm data from the Herschel Multi-tiered Extragalactic Survey and 870 µm data from the LABOCA ECDFS Submillimeter Survey. None of the 126, 280, or 92 LAEs at z = 2.8, 3.1, and 4.5, res…
The Variable Sky of Deep Synoptic Surveys
Matheson, Thomas; Howell, Steve B.; Mighell, Kenneth J. +2 more
The discovery of variable and transient sources is an essential product of synoptic surveys. The alert stream will require filtering for personalized criteria—a process managed by a functionality commonly described as a Broker. In order to understand quantitatively the magnitude of the alert generation and Broker tasks, we have undertaken an analy…
Multi-spacecraft Observations of Linear Modes and Sideband Waves in Ion-scale Solar Wind Turbulence
Motschmann, Uwe; Glassmeier, Karl-Heinz; Narita, Yasuhito +1 more
In the scenario of weak turbulence, energy is believed to be cascaded from smaller to larger wave numbers and frequencies due to weak wave-wave interactions. Based on its perturbative treatment one may regard plasma turbulence as a superposition of linear modes (or normal modes) and sideband waves (or nonlinear modes). In this study, we use magnet…
Discovery of X-Ray Emission from the First Be/Black Hole System
Iwasawa, K.; Casares, J.; Paredes, J. M. +3 more
MWC 656 (=HD 215227) was recently discovered to be the first binary system composed of a Be star and a black hole (BH). We observed it with XMM-Newton, and detected a faint X-ray source compatible with the position of the optical star, thus proving it to be the first Be/BH X-ray binary. The spectrum analysis requires a model fit with two component…
Exploratory X-Ray Monitoring of Luminous Radio-quiet Quasars at High Redshift: Initial Results
Brandt, W. N.; Kaspi, Shai; Schneider, Donald P. +6 more
We present initial results from an exploratory X-ray monitoring project of two groups of comparably luminous radio-quiet quasars (RQQs). The first consists of four sources at 4.10 <= z <= 4.35, monitored by Chandra, and the second is a comparison sample of three sources at 1.33 <= z <= 2.74, monitored by Swift. Together with archival X…
Fomalhaut b as A Cloud of Dust: Testing Aspects of Planet Formation Theory
Currie, Thayne; Kenyon, Scott J.; Bromley, Benjamin C.
We consider the ability of three models—impacts, captures, and collisional cascades—to account for a bright cloud of dust in Fomalhaut b. Our analysis is based on a novel approach to the power-law size distribution of solid particles central to each model. When impacts produce debris with (1) little material in the largest remnant and (2) a steep …
An XMM-Newton Study of the Mixed-morphology Supernova Remnant W28 (G6.4-0.1)
Safi-Harb, Samar; Zhou, Ping; Chen, Yang +3 more
We have performed an XMM-Newton imaging and spectroscopic study of supernova remnant (SNR) W28, a prototype mixed-morphology or thermal composite SNR believed to be interacting with a molecular cloud. The observed hot X-ray emitting plasma is characterized by low metal abundances, showing no evidence of ejecta. The X-rays arising from the deformed…