Science Archives Publication System

Effects of Meridional Flow Variations on Solar Cycles 23 and 24

DOI: 10.1088/0004-637X/792/2/142 Bibcode: 2014ApJ...792..142U

Hathaway, David H.; Upton, Lisa

The faster meridional flow that preceded the solar cycle 23/24 minimum is thought to have led to weaker polar field strengths, producing the extended solar minimum and the unusually weak cycle 24. To determine the impact of meridional flow variations on the sunspot cycle, we have simulated the Sun's surface magnetic field evolution with our newly …

2014 • The Astrophysical Journal

SOHO 61

CLASH: z ∼ 6 young galaxy candidate quintuply lensed by the frontier field cluster RXC J2248.7-4431

DOI: 10.1093/mnras/stt2284 Bibcode: 2014MNRAS.438.1417M

Infante, L.; Zheng, W.; Molino, A. +37 more

We present a quintuply lensed z ∼ 6 candidate discovered in the field of the galaxy cluster RXC J2248.7-4431 (z ∼ 0.348) targeted within the Cluster Lensing and Supernova survey with Hubble (CLASH) and selected in the deep Hubble Space Telescope (HST) frontier fields survey. Thanks to the CLASH 16-band HST imaging, we identify the quintuply lensed…

2014 • Monthly Notices of the Royal Astronomical Society

eHST 61

Absorption-line Detections of 10⁵-10⁶ K Gas in Spiral-rich Groups of Galaxies

DOI: 10.1088/0004-637X/791/2/128 Bibcode: 2014ApJ...791..128S

Kacprzak, Glenn G.; Savage, Blair D.; Shull, J. Michael +10 more

Using the Cosmic Origins Spectrograph (COS) on the Hubble Space Telescope, the COS Science Team has conducted a high signal-to-noise survey of 14 bright QSOs. In a previous paper, these far-UV spectra were used to discover 14 "warm" (T >= 10⁵ K) absorbers using a combination of broad Lyα and broad O VI absorptions. A reanalysis of a …

2014 • The Astrophysical Journal

eHST 61

Bimodal distribution of sulfuric acid aerosols in the upper haze of Venus

DOI: 10.1016/j.icarus.2013.10.013 Bibcode: 2014Icar..231...83G

Crisp, David; Zhang, Xi; Gao, Peter +2 more

Observations by the SPICAV/SOIR instruments aboard Venus Express have revealed that the upper haze (UH) of Venus, between 70 and 90 km, is variable on the order of days and that it is populated by two particle modes. We use a one-dimensional microphysics and vertical transport model based on the Community Aerosol and Radiation Model for Atmosphere…

2014 • Icarus

VenusExpress 61

Contemporaneous observations of the radio galaxy NGC 1275 from radio to very high energy γ-rays

DOI: 10.1051/0004-6361/201322951 Bibcode: 2014A&A...564A...5A

Maraschi, L.; Covino, S.; Antonelli, L. A. +156 more

Aims: The radio galaxy NGC 1275, recently identified as a very high energy (VHE, >100 GeV) γ-ray emitter by MAGIC, is one of the few non-blazar active galactic nuclei detected in the VHE regime. The purpose of this work is to better understand the origin of the γ-ray emission and locate it within the galaxy.
Methods…

2014 • Astronomy and Astrophysics

Planck 61

HerMES: point source catalogues from Herschel-SPIRE observations II

DOI: 10.1093/mnras/stu1569 Bibcode: 2014MNRAS.444.2870W

Buat, V.; Wang, L.; Bock, J. +18 more

The Herschel Multi-tiered Extragalactic Survey (HerMES) is the largest Guaranteed Time Key Programme on the Herschel Space Observatory. With a wedding cake survey strategy, it consists of nested fields with varying depth and area totalling ∼380 deg². In this paper, we present deep point source catalogues extracted from Herschel-Spectral…

2014 • Monthly Notices of the Royal Astronomical Society

Herschel 61

Methanol along the path from envelope to protoplanetary disc

DOI: 10.1093/mnras/stu1789 Bibcode: 2014MNRAS.445..913D

Walsh, Catherine; Harsono, Daniel; van Dishoeck, Ewine F. +2 more

Interstellar methanol is considered to be a parent species of larger, more complex organic molecules. A physicochemical simulation of infalling parcels of matter is performed for a low-mass star-forming system to trace the chemical evolution from cloud to disc. An axisymmetric 2D semi-analytic model generates the time-dependent density and velocit…

2014 • Monthly Notices of the Royal Astronomical Society

Rosetta 61

The substorm current wedge: Further insights from MHD simulations

DOI: 10.1002/2014JA019863 Bibcode: 2014JGRA..119.3503B

Hesse, M.; Birn, J.

Using a recent magnetohydrodynamic simulation of magnetotail dynamics, we further investigate the buildup and evolution of the substorm current wedge (SCW), resulting from flow bursts generated by near-tail reconnection. Each flow burst generates an individual current wedge, which includes the reduction of cross-tail current and the diversion to r…

2014 • Journal of Geophysical Research (Space Physics)

Cluster 61

Kinematics and simulations of the stellar stream in the halo of the Umbrella Galaxy

DOI: 10.1093/mnras/stu1074 Bibcode: 2014MNRAS.442.3544F

Zibetti, S.; Martínez-Delgado, D.; Strader, J. +9 more

We study the dynamics of faint stellar substructures around the Umbrella Galaxy, NGC 4651, which hosts a dramatic system of streams and shells formed through the tidal disruption of a nucleated dwarf elliptical galaxy. We elucidate the basic characteristics of the system (colours, luminosities, stellar masses) using multiband Subaru/Suprime-Cam im…

2014 • Monthly Notices of the Royal Astronomical Society

eHST 61

Cold electron heating by EMIC waves in the plasmaspheric plume with observations of the Cluster satellite

DOI: 10.1002/2014GL059241 Bibcode: 2014GeoRL..41.1830Y

Dandouras, Iannis; Yuan, Zhigang; Huang, Shiyong +7 more

We report in situ observations by the Cluster spacecraft of plasmaspheric electron heating in the plasmaspheric plume. Electron heating events were accompanied by enhancements of electromagnetic ion cyclotron (EMIC) waves in the increased density ducts on the negative density gradient side for two substructures of the plasmaspheric plume. Electron…

2014 • Geophysical Research Letters

Cluster 60