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Multifractal Analysis of Heliospheric Magnetic Field Fluctuations Observed by Ulysses
Bruno, Roberto; Wawrzaszek, Anna; Echim, Marius
We present the multifractal study of the intermittency of the magnetic field turbulence in the fast and slow solar wind beyond the ecliptic plane during two solar minima (1997-1998, 2007-2008) and solar maximum (1999-2001). More precisely, we consider 126 time intervals of Ulysses magnetic field measurements, obtain the multifractal spectra, and e…
Late-time Observations of the Type Ia Supernova SN 2014J with the Hubble Space Telescope Wide Field Camera 3
Graur, Or
Recent works have studied the late-time light curves of Type Ia supernovae (SNe Ia) when these were older than 500 days past B-band maximum light. Of these, SN 2014J, which exploded in the nearby galaxy M82, was studied with the Advanced Camera for Surveys onboard the Hubble Space Telescope (HST) by Yang et al. Here, I report complementary photome…
A Dynamical Study of Extraplanar Diffuse Ionized Gas in NGC 5775
Gallagher, J. S., III; Boettcher, Erin; Zweibel, Ellen G.
The structure and kinematics of gaseous, disk-halo interfaces are imprinted with the processes that transfer mass, metals, and energy between galactic disks and their environments. We study the extraplanar diffuse ionized gas (eDIG) layer in the interacting, star-forming galaxy NGC 5775 to better understand the consequences of star formation feedb…
Calibrating Star Formation Rate Prescriptions at Different Scales (10 pc-1 kpc) in M31
Schinnerer, Eva; Blanc, Guillermo A.; Kreckel, Kathryn +9 more
We calibrate commonly used star formation rate (SFR) prescriptions using observations in five kiloparsec-sized fields in the nearby galaxy Andromeda (M31) at 10 pc spatial resolution. Our observations at different scales enable us to resolve the star-forming regions and to distinguish them from non-star-forming components. We use extinction-correc…
The MASSIVE Survey XIII. Spatially Resolved Stellar Kinematics in the Central 1 kpc of 20 Massive Elliptical Galaxies with the GMOS-North Integral Field Spectrograph
Ma, Chung-Pei; Greene, Jenny E.; Blakeslee, John P. +5 more
We use observations from the GEMINI-N/GMOS integral field spectrograph (IFS) to obtain spatially resolved stellar kinematics of the central ∼1 kpc of 20 early-type galaxies (ETGs) with stellar masses greater than 1011.7 M ⊙ in the MASSIVE survey. Together with observations from the wide-field Mitchell IFS at McDonald Observat…
Discovery of a Lyα-emitting Dark Cloud within the z ∼ 2.8 SMM J02399-0136 System
Ivison, R. J.; Prochaska, J. Xavier; Cai, Zheng +9 more
We present Keck/Keck Cosmic Web Imager (KCWI) integral field spectrograph observations of the complex system surrounding SMM J02399-0136 (a lensed z = 2.8 sub-mm galaxy), including an associated Lyα nebula, a dust-obscured, broad-absorption-line quasar, and neighboring galaxies. At a 3σ surface brightness contour of 1.6 × 10-17 erg s
Dynamic Processes of the Moreton Wave on 2014 March 29
Shibata, Kazunari; Ichimoto, Kiyoshi; Asai, Ayumi +4 more
On 2014 March 29, an intense solar flare classified as X1.0 occurred in active region 12017. Several associated phenomena accompanied this event, among them a fast-filament eruption, large-scale propagating disturbances in the corona and the chromosphere including a Moreton wave, and a coronal mass ejection. This flare was successfully detected in…
Spectroscopic Constraints on the Cross-sectional Asymmetry and Expansion of Active Region Loops
Young, P. R.; Klimchuk, J. A.; DeForest, C. E. +1 more
We explore the constraints that can be placed on the dimensions of coronal loops out of the plane of the sky by utilizing spectroscopic observations from the Hinode/EUV Imaging Spectrometer (EIS). The usual assumption is that loop cross sections are circular. Changes in intensity are assumed to be the result of changing density, filling factor, an…
ALMA Reveals a Gas-rich, Maximum Starburst in the Hyperluminous, Dust-obscured Quasar W0533-3401 at z ∼ 2.9
Knudsen, Kirsten K.; Fan, Lulu; Han, Yunkun +1 more
We present ALMA observations and multiwavelength spectral energy distribution analysis in a Wide-field Infrared Survey Explorer-selected, hyperluminous dust-obscured quasar W0533-3401 at z = 2.9. We derive the physical properties of each of its components, such as molecular gas, stars, dust, and the central supermassive black hole (SMBH). Both the…
Multiple Magnetic Reconnections Driven by a Large-scale Magnetic Flux Rope
Wang, J. X.; Tan, B. L.; Zhou, G. P. +4 more
Magnetic flux ropes (MFRs), as the most probable core structure of solar eruptive activity, remain mysterious on their origination, magnetic environment, and erupting mechanisms. Here, we newly identify a large-scale hot channel MFR, named “MFR3”, that connects an anti-Hale active region (AR) 11429 and a normal AR 11430 on 2012 March 7 based on mu…