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Blowout jets and impulsive eruptive flares in a bald-patch topology
Srivastava, A. K.; Mandrini, C. H.; Schmieder, B. +7 more
Context. A subclass of broad extreme ultraviolet (EUV) and X-ray jets, called blowout jets, have become a topic of research since they could be the link between standard collimated jets and coronal mass ejections (CMEs).
Aims: Our aim is to understand the origin of a series of broad jets, some of which are accompanied by flares and associated…
Turbulent Transport in a Three-dimensional Solar Wind
Bruno, R.; Zank, G. P.; Shiota, D. +3 more
Turbulence in the solar wind can play essential roles in the heating of coronal and solar wind plasma and the acceleration of the solar wind and energetic particles. Turbulence sources are not well understood and thought to be partly enhanced by interaction with the large-scale inhomogeneity of the solar wind and the interplanetary magnetic field …
A High Space Density of Luminous Lyman Alpha Emitters at z ∼ 6.5
Bagley, Micaela B.; Martin, Crystal L.; Garel, Thibault +16 more
We present the results of a systematic search for Lyα emitters (LAEs) at 6≲ z≲ 7.6 using the HST WFC3 Infrared Spectroscopic Parallel (WISP) Survey. Our total volume over this redshift range is ∼ 8× {10}5 Mpc3, comparable to many of the narrowband surveys despite their larger area coverage. We find two LAEs at z = 6.38 and 6.…
EGG: hatching a mock Universe from empirical prescriptions⋆
Elbaz, D.; Ferguson, H. C.; Okumura, K. +14 more
This paper introduces EGG, the Empirical Galaxy Generator, a tool designed within the ASTRODEEP collaboration to generate mock galaxy catalogs for deep fields with realistic fluxes and simple morphologies. The simulation procedure is based exclusively on empirical prescriptions - rather than first principles - to provide the most accurate match wi…
Thermal modelling of water activity on comet 67P/Churyumov-Gerasimenko with global dust mantle and plural dust-to-ice ratio
Jorda, L.; Lamy, P. L.; Lara, L. M. +51 more
We perform a thermo-physical analysis on water activity of comet 67P/Churyumov-Gerasimenko (67P). The sublimation of water is assumed to occur from beneath a global, desiccated dust mantle over the irregular-shaped nucleus. The concept of two thermal models, the recipe of model formulation and the strategy of application to comet 67P are described…
Carbon Chain Anions and the Growth of Complex Organic Molecules in Titan’s Ionosphere
Lewis, G. R.; Coates, A. J.; Kataria, D. O. +13 more
Cassini discovered a plethora of neutral and ionized molecules in Titan’s ionosphere including, surprisingly, anions and negatively charged molecules extending up to 13,800 u q-1. In this Letter, we forward model the Cassini electron spectrometer response function to this unexpected ionospheric component to achieve an increased mass res…
An 80 au cavity in the disk around HD 34282
Pinte, C.; Ménard, F.; van der Plas, G. +5 more
Context. Large cavities in disks are important testing grounds for the mechanisms proposed to drive disk evolution and dispersion, such as dynamical clearing by planets and photoevaporation.
Aims: We aim to resolve the large cavity in the disk around HD 34282, whose presence has been predicted by previous studies modeling the spectral energy …
Investigating the Wave Nature of the Outer Envelope of Halo Coronal Mass Ejections
Vourlidas, Angelos; Kwon, Ryun-Young
We investigate the nature of the outer envelope of halo coronal mass ejections (H-CMEs) using multi-viewpoint observations from the Solar Terrestrial Relations Observatory-A, -B, and SOlar and Heliospheric Observatory coronagraphs. The 3D structure and kinematics of the halo envelopes and the driving CMEs are derived separately using a forward mod…
Various Local Heating Events in the Earliest Phase of Flux Emergence
Toriumi, Shin; Cheung, Mark C. M.; Katsukawa, Yukio
Emerging flux regions (EFRs) are known to exhibit various sporadic local heating events in the lower atmosphere. To investigate the characteristics of these events, especially to link the photospheric magnetic fields and atmospheric dynamics, we analyze Hinode, Interface Region Imaging Spectrograph (IRIS), and Solar Dynamics Observatory data of a …
ALMA Observations of Circumnuclear Disks in Early-type Galaxies: 12CO(2-1) and Continuum Properties
Ho, Luis C.; Barth, Aaron J.; Buote, David A. +4 more
We present results from an Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 2 program to map CO(2-1) emission in nearby early-type galaxies (ETGs) that host circumnuclear gas disks. We obtained ∼0.″3 resolution Band 6 observations of seven ETGs selected on the basis of dust disks in Hubble Space Telescope images. We detect CO emission in …