scholarly journals The effects of metallicity, UV radiation and non-equilibrium chemistry in high-resolution simulations of galaxies

2016 ◽  
Vol 458 (1) ◽  
pp. 270-292 ◽  
Author(s):  
A. J. Richings ◽  
Joop Schaye
Keyword(s):  
High Resolution ◽  
Uv Radiation ◽  
Non Equilibrium

scholarly journals Predicting the stellar and non-equilibrium dust emission spectra of high-resolution simulated galaxies with dart-ray

2015 ◽  
Vol 449 (1) ◽  
pp. 243-267 ◽  
Author(s):  
Giovanni Natale ◽  
Cristina C. Popescu ◽  
Richard. J. Tuffs ◽  
Victor P. Debattista ◽  
Jörg Fischera ◽  
...  
Keyword(s):  
High Resolution ◽  
Dust Emission ◽  
Emission Spectra ◽  
Non Equilibrium

scholarly journals Non-Equilibrium Ionization in Puppis A

1983 ◽  
Vol 101 ◽  
pp. 245-252
Author(s):  
P. F. Winkler ◽  
C. R. Canizares ◽  
B. C. Bromley
Keyword(s):  
High Resolution ◽  
Spectroscopic Data ◽  
Supernova Remnant ◽  
Optical Data ◽  
Equilibrium Conditions ◽  
X Ray ◽  
Flux Measurements ◽  
Far From Equilibrium ◽  
Einstein Observatory ◽  
Non Equilibrium

High resolution X-ray spectroscopy of the brightest knot of emission in the Puppis A supernova remnant shows that it is made up of ionizing plasma, far from equilibrium. Flux measurements in several X-ray lines enable us to determine the non-equilibrium conditions: electron temperature, ion populations, and time since the knot was heated by the supernova shock. Imaging and spectroscopic data from the Einstein Observatory together suggest that this knot is a cloud of density about 10 cm−3 which has recently been shocked to a temperature 7 × 106 K. Radio and optical data on the region appear consistent with this picture.

scholarly journals A Comparison of Three Regions of Puppis A

1990 ◽  
Vol 115 ◽  
pp. 172-175
Author(s):  
K.F. Fischbach ◽  
L.M. Bateman ◽  
C.R. Canizares ◽  
T.H. Markert ◽  
P.J. Saez
Keyword(s):  
High Resolution ◽  
Shock Front ◽  
Electron Temperature ◽  
Plasma Diagnostics ◽  
Column Density ◽  
Equilibrium Analysis ◽  
Ionization Equilibrium ◽  
X Ray ◽  
Hydrogen Column Density ◽  
Non Equilibrium

AbstractHigh resolution X-ray spectral observations of Puppis A were performed with the FPCS on the Einstein Observatory at three regions of the remnant: the shock front, the bright eastern knot, and the interior. Plasma diagnostics of lines from OVII and OVIII constrain the values of electron temperature, ionization timescale, and hydrogen column density. We compare results of the diagnostics for these three regions. A non-equilibrium analysis of previously published fluxes of oxygen lines shows that the interior has not yet reached ionization equilibrium.

scholarly journals High-resolution modeling of thermal thresholds and multiple environmental influences on coral bleaching for regional and local reef managements

2017 ◽  
Author(s):  
Naoki H. Kumagai ◽  
Hiroya Yamano ◽  
Keyword(s):  
High Resolution ◽  
Uv Radiation ◽  
Coral Bleaching ◽  
Environmental Influences ◽  
Thermal Indices ◽  
Water Turbidity ◽  
Thermal Index ◽  
Thermal Thresholds ◽  
Cooling Effects ◽  
Global And Local

AbstractCorals are one of the communities most threatened by global and local stressors. Excessive summer sea temperatures can cause coral bleaching, resulting in decreases in living coral coverage. Coral bleaching may begin with rising sea temperatures, although the widely used threshold of 1 °C over the local climatological maximum sea temperature has been reconsidered. In this study, we refine thermal indices predicting coral bleaching at high resolution (1 km) by statistically optimizing the thermal threshold and multiple environmental influences on bleaching, such as ultraviolet (UV) radiation, water turbidity, and cooling effects on corals. We use a dataset of coral bleaching events observed during 2004–2016 in Japan derived from the Web-based monitoring system, the Sango (Coral) Map Project, aiming at regional to local conservation of Japanese corals. We show how the ability to predict coral bleaching is improved by the choice of thermal index, statistical optimization of thermal thresholds, usage of multiple environmental influences, and modeling methods (generalized linear model and random forest). After optimization, the differences among the thermal indices in the ability to predict coral bleaching were slight. Among environmental influences, cooling effects, UV radiation, and water turbidity, in addition to a thermal index, well explain the occurrence of coral bleaching. Prediction based on the best explanatory model reveals that recent Japanese coral reefs are experiencing bleaching in many areas, although we show a practical way to reduce bleaching frequency significantly by screening UV radiation. Thus, our high-resolution models may provide a quantitative basis for the management of local reefs under current global and local stressors. The results of this study may be useful to other researchers for selecting a predictive method according to their needs or skills.

scholarly journals Equilibrium and Non-equilibrium Studies of Protein G using High-Resolution Optical Trapping Unveil Heterogeneous Unfolding Pathways

2018 ◽  
Vol 114 (3) ◽  
pp. 577a
Author(s):  
Yujie Chen ◽  
Dena Izadi ◽  
Miles L. Whitmore ◽  
Joseph D. Slivka ◽  
Lisa J. Lapidus ◽  
...  
Keyword(s):  
High Resolution ◽  
Optical Trapping ◽  
Protein G ◽  
Equilibrium Studies ◽  
Non Equilibrium
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