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Two New Bursting Neutron Star Low-mass X-Ray Binaries: Swift J185003.2-005627 and Swift J1922.7-1716
Altamirano, D.; Degenaar, N.; Wijnands, R. +1 more
We discuss the origin of two triggers of Swift's Burst Alert Telescope (BAT) that occurred in 2011. The triggers were identified with Swift J185003.2-005627, a previously unknown X-ray source, and the known but unclassified X-ray transient Swift J1922.7-1716. We investigate the BAT data and follow-up observations obtained with Swift's X-ray and ul…
First Simultaneous Detection of Moving Magnetic Features in Photospheric Intensity and Magnetic Field Data
Yurchyshyn, Vasyl; Lim, Eun-Kyung; Goode, Philip
The formation and the temporal evolution of a bipolar moving magnetic feature (MMF) was studied with high-spatial and temporal resolution. The photometric properties were observed with the New Solar Telescope at Big Bear Solar Observatory using a broadband TiO filter (705.7 nm), while the magnetic field was analyzed using the spectropolarimetric d…
Bolocam Observations of Two Unconfirmed Galaxy Cluster Candidates from the Planck Early Sunyaev-Zel'dovich Sample
Umetsu, K.; Bridge, C.; Sayers, J. +5 more
We present Bolocam observations of two galaxy cluster candidates reported as unconfirmed in the Planck early Sunyaev-Zel'dovich (eSZ) sample, PLCKESZ G115.71+17.52 and PLCKESZ G189.84-37.24. We observed each of these candidates with Bolocam at 140 GHz from the Caltech Submillimeter Observatory in 2011 October. The resulting images have white noise…
Asymmetry of Hard X-Ray Emissions at Conjugate Footpoints in Solar Flares
Krucker, Säm; Cheng, C. Z.; Yang, Ya-Hui +2 more
The chromospheric double hard X-ray (HXR) sources generally appear at the conjugate footpoints of flaring loops with asymmetric flux distributions. The behavior of such HXR footpoint asymmetry should be affected by several effects simultaneously and cannot be attributed to a single effect easily. In this study, we attempt to address the properties…
Cool Dust in the Outer Ring of NGC 1291
Murphy, E. J.; Armus, L.; Walter, F. +18 more
We examine Herschel Space Observatory images of one nearby prototypical outer ring galaxy, NGC 1291, and show that the ring becomes more prominent at wavelengths longer than 160 µm. The mass of cool dust in the ring dominates the total dust mass of the galaxy, accounting for at least 70% of it. The temperature of the emitting dust in the rin…
Convective Bursts and the Coupling of Saturn's Equatorial Storms and Interior Rotation
Heimpel, Moritz; Aurnou, Jonathan M.
Temporal variations of Saturn's equatorial jet and magnetic field hint at rich dynamics coupling the atmosphere and the deep interior. However, it has been assumed that rotation of the interior dynamo must be steady over tens of years of modern observations. Here we use a numerical convection model and scaling estimates to show how equatorial conv…
Spatially Resolved Kinematics of the Central Regions of M83: Hidden Mass Signatures and the Role of Supernovae
Colina, L.; Davies, R.; Orban de Xivry, G. +1 more
The barred grand-design spiral M83 (NGC 5236) is one of the most studied galaxies given its proximity, orientation, and particular complexity. Nonetheless, many aspects of the central regions remain controversial, conveying our limited understanding of the inner gas and stellar kinematics, and ultimately of the nucleus evolution. In this work, we …
Relaxation of Magnetic Field Relative to Plasma Density Revealed from Microwave Zebra Patterns Associated with Solar Flares
Yu, Sijie; Tan, Baolin; Yan, Yihua
It is generally considered that the emission of microwave zebra pattern (ZP) structures requires high density and high temperature, which is similar to the situation of the flaring region where primary energy is released. Therefore, a parameter analysis of ZPs may reveal the physical conditions of the flaring source region. This work investigates …
Deep Ultraviolet Luminosity Functions at the Infall Region of the Coma Cluster
Hornschemeier, A. E.; Smith, R.; Mobasher, B. +5 more
We have used deep GALEX observations at the infall region of the Coma cluster to measure the faintest ultraviolet (UV) luminosity functions (LFs) presented for a rich galaxy cluster thus far. The Coma UV LFs are measured to M UV = -10.5 in the GALEX FUV and NUV bands, or 3.5 mag fainter than previous studies, and reach the dwarf early-t…
The Taiwan ECDFS Near-Infrared Survey: Very Bright End of the Luminosity Function at z > 7
Tsai, Chao-Wei; Yan, Haojing; Ho, Paul T. P. +5 more
The primary goal of the Taiwan ECDFS Near-Infrared Survey (TENIS) is to find well-screened galaxy candidates at z > 7 (z' dropout) in the Extended Chandra Deep Field-South (ECDFS). To this end, TENIS provides relatively deep J and Ks data (~25.3 ABmag, 5σ) for an area of 0.5 × 0.5 deg. Leveraged with existing data at mid-infrared to …