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Atomic scattering factor of the ASTRO-H (Hitomi) SXT reflector around the gold's L edges
Maeda, Yoshitomo; Ishida, Manabu; Okajima, Takashi +14 more
Potential role of kinetic Alfvén waves and whistler waves in solar wind plasmas
Goldstein, M. L.; Sharma, R. P.; Nandal, P. +1 more
Spacecraft observations indicate the signatures of highly oblique kinetic Alfvén waves (KAWs) and whistler waves in the solar wind plasma. In the present work, we explore the possible role of KAWs and whistler waves in the observed solar wind magnetic turbulent spectrum. The nonlinear spatial evolution of KAW is studied including the effects of th…
The thin and medium filters of the EPIC camera on-board XMM-Newton: measured performance after more than 15 years of operation
Tiengo, Andrea; Barbera, Marco; Gastaldello, Fabio +9 more
After more than 15 years of operation of the EPIC camera on board the XMM-Newton X-ray observatory, we have reviewed the status of its Thin and Medium filters. We have selected a set of Thin and Medium back-up filters among those still available in the EPIC consortium and have started a program to investigate their status by different laboratory m…
Discovery of an X-Ray-emitting Contact Binary System 2MASS J11201034-2201340
Chen, W. P.; Kong, Albert K. H.; Ip, Wing-Huen +10 more
We report the detection of orbital modulation, a model solution, and the X-ray properties of a newly discovered contact binary, Two Micron All Sky Survey (2MASS) J11201034-2201340. We serendipitously found this X-ray point source outside the error ellipse when searching for possible X-ray counterparts of γ-ray millisecond pulsars among the unident…
Exploring Damped Lyα System Host Galaxies Using Gamma-Ray Bursts
Cenko, S. Bradley; Rafelski, Marc; Veilleux, Sylvain +6 more
We present a sample of 45 Damped Lyα system (DLA; {N}{{H}{{I}}} ≥slant 2× {10}20 {{cm}}-2) counterparts (33 detections, 12 upper limits) which host gamma-ray bursts (GRB-DLAs) in order to investigate star formation and metallicity within galaxies hosting DLAs. Our sample spans z∼ 2{--}6 and is nearly three times la…
Diagnosing the Source Region of a Solar Burst on 26 September 2011 by Using Microwave Type-III Pairs
Huang, J.; Yan, Y.; Karlický, M. +4 more
We report a peculiar and interesting train of microwave Type-III pair bursts in the impulsive rising phase of a solar flare on 26 September 2011. The observations include radio spectrometers at frequencies of 0.80 - 2.00 GHz from the Ondřejov radiospectrograph in the Czech Republic (ORSC), hard X-ray from the Ramaty High-Energy Solar Spectroscopic…
Spectroscopy of Luminous Compact Blue Galaxies in Distant Clusters. II. Physical Properties of dE Progenitor Candidates
Randriamampandry, S. M.; Wirth, Gregory D.; Bershady, M. A. +1 more
Luminous Compact Blue Galaxies (LCBGs) are an extreme star-bursting population of galaxies that were far more common at earlier epochs than today. Based on spectroscopic and photometric measurements of LCBGs in massive (M > 1015 M⊙), intermediate redshift (0.5 < z < 0.9) galaxy clusters, we present their rest-frame p…
The Young Stellar Population of Lynds 1340. An Infrared View
Apai, D.; Balog, Z.; Kun, M. +4 more
We present results of an infrared study of the molecular cloud Lynds 1340, forming three groups of low- and intermediate-mass stars. Our goals are to identify and characterize the young stellar population of the cloud, study the relationships between the properties of the cloud and the emergent stellar groups, and integrate L1340 into the picture …
The role of deviation of magnetic field direction on the beaming angle: Extending of beaming angle theory
Katoh, Yuto; Kalaee, Mohammad Javad
In the beaming angle theory, the magnetic field direction is assumed perpendicular to the normal boundary, and the prediction of this theory, from beaming angle is base on the Jones' formula. We investigate the effect of deviation the magnetic field direction respect to normal boundary direction. In this study, we present new conditions that under…
Potential vorticity of the south polar vortex of Venus
Hueso, R.; Sánchez-Lavega, A.; García Muñoz, A. +1 more
Venus' atmosphere shows highly variable warm vortices over both of the planet's poles. The nature of the mechanism behind their formation and properties is still unknown. Potential vorticity is a conserved quantity when advective processes dominate over friction and diabatic heating and is a quantity frequently used to model balanced flows. As a s…