757 research outputs found
Keeping “I Do” Between Two: A Post-Obergefell Analysis of a Bigamous Marriage and Its Implications for Louisiana’s Matrimonial Regime
The article focuses on the U.S. expansion of individual rights and liberties and the significant ambiguities surrounding the Supreme Court\u27s interpretation of the Due Process and Equal Protection clauses of the Fourteenth Amendment and constitutional analysis of Louisiana\u27s criminal bigamy statute
The economics of nitrogen fertilization of bromegrass
Non-Peer Reviewe
Self Calibration of Tomographic Weak Lensing for the Physics of Baryons to Constrain Dark Energy
Numerical studies indicate that uncertainties in the treatment of baryonic
physics can affect predictions for shear power spectra at a level that is
significant for forthcoming surveys such as DES, SNAP, and LSST.
Correspondingly, we show that baryonic effects can significantly bias dark
energy parameter measurements. Eliminating such biases by neglecting
information in multipoles beyond several hundred leads to weaker parameter
constraints by a factor of approximately 2 to 3 compared with using information
out to multipoles of several thousand. Fortunately, the same numerical studies
that explore the influence of baryons indicate that they primarily affect power
spectra by altering halo structure through the relation between halo mass and
mean effective halo concentration. We explore the ability of future weak
lensing surveys to constrain both the internal structures of halos and the
properties of the dark energy simultaneously as a first step toward self
calibrating for the physics of baryons. This greatly reduces parameter biases
and no parameter constraint is degraded by more than 40% in the case of LSST or
30% in the cases of SNAP or DES. Modest prior knowledge of the halo
concentration relation greatly improves even these forecasts. Additionally, we
find that these surveys can constrain effective halo concentrations near
m~10^14 Msun/h and z~0.2 to better than 10% with shear power spectra alone.
These results suggest that inferring dark energy parameters with measurements
of shear power spectra can be made robust to baryonic effects and may
simultaneously be competitive with other methods to inform models of galaxy
formation. (Abridged)Comment: 18 pages, 11 figures. Minor changes reflecting referee's comments.
Results and conclusions unchanged. Accepted for publication in Physical
Review
Groups of two galaxies in SDSS: implications of colours on star formation quenching time-scales
We have devised a method to select galaxies that are isolated in their dark
matter halo (N=1 systems) and galaxies that reside in a group of exactly two
(N=2 systems). Our N=2 systems are widely-separated (up to
\,200\,\,kpc), where close galaxy-galaxy interactions are not
dominant. We apply our selection criteria to two volume-limited samples of
galaxies from SDSS DR6 with -19 and -20 to study the
effects of the environment of very sparse groups on galaxy colour. For
satellite galaxies in a group of two, we find a red excess attributed to star
formation quenching of 0.15\,\,0.01 and 0.14\,\,0.01 for the -19 and
-20 samples, respectively, relative to isolated galaxies of the same stellar
mass. Assuming N=1 systems are the progenitors of N=2 systems, an
immediate-rapid star formation quenching scenario is inconsistent with these
observations. A delayed-then-rapid star formation quenching scenario with a
delay time of 3.3 and 3.7\,Gyr for the -19 and -20 samples, respectively,
yields a red excess prediction in agreement with the observations. The
observations also reveal that central galaxies in a group of two have a slight
blue excess of 0.06\,\,0.02 and 0.02\,\,0.01 for the -19 and -20
samples, respectively, relative to N=1 populations of the same stellar mass.
Our results demonstrate that even the environment of very sparse groups of
luminous galaxies influence galaxy evolution and in-depth studies of these
simple systems are an essential step towards understanding galaxy evolution in
general.Comment: 17 pages, 11 figures, accepted to MNRA
The Black Death and Its Impact on the Church and Popular Religion
This thesis concerns the religious impact of the Black Death, the plague that devastated Europe during the middle of the fourteenth century. It explores the effect of the Black Death on the Catholic Church and the religious movements that emerged in response to it. The conclusions drawn here are based on the research of both primary and secondary sources. The Church played a significant role during the Middle Ages because religion was an important aspect of daily life for European Christians. When the Black Death struck Europe in 1347, the Church struggled to cope with the plague’s damaging consequences and its reputation suffered as a result. This thesis concludes that the Black Death contributed to the decline in the confidence and faith of the Christian laity towards the institution of the Church and its leadership. The scope of this paper focuses on the plague’s impact on the clergy, the rise of the flagellant movement, and the widespread Jewish persecutions that ensued in the wake of the plague. The Black Death was a significant event in the history of Western society with profound cultural and demographic consequences, and its impact on the Church and religion in medieval society justifies the study of this topic
The recovery and relative efficiency of urea and ammonium nitrate fertilizer sources applied onto snow covered forage crops
Non-Peer Reviewe
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