scholarly journals The effect of redshift degeneracy and the damping effect of viscous medium on the information extracted from gravitational wave signals

2020 ◽  
Vol 500 (3) ◽  
pp. 3999-4003
Author(s):  
Shou-Li Ning ◽  
LiXin Xu
Keyword(s):  
Dark Matter ◽  
Intrinsic Value ◽  
Viscous Medium ◽  
Propagation Path ◽  
Gravitational Redshift ◽  
Cosmological Redshift ◽  
Damping Effect ◽  
Intrinsic Values ◽  
Cosmic Medium ◽  
Damping Rate

ABSTRACT Considering the cosmological redshift zc, the mass of GW source extracted from GW signal is 1 + zc times larger than its intrinsic value, and distance between detector and GW source should be regarded as luminosity distance. However, besides cosmological redshift, there are other kinds of redshifts should be considered, which is actually ignored, in the analysis of GW data, such as Doppler redshift and gravitational redshift, so the parameters extracted from GW may deviate from their intrinsic values. Another factor that may affect GW is the viscous medium in propagation path of GW, which may damp the GW with a damping rate of 16πGη. Some studies indicate dark matter may interact with each other, thus dark matter may be the origin of viscosity of cosmic medium. Then the GW may be rapidly damped by the viscous medium that is made of dark matter, such as dark matter ‘mini-spike’ around intermediate-mass black hole. In this article, we mainly discuss how Doppler and gravitational redshift, together with the damping effect of viscous medium, affect the informations, such as the mass and redshift of GW source, extracted from GW signals.

Kant against the Animals, Part 2

2018 ◽  
Author(s):  
Christine M. Korsgaard
Keyword(s):  
Intrinsic Value ◽  
Special Kind ◽  
Intrinsic Values ◽  
Limits Of Knowledge

Opponents of Kant suppose he thinks that autonomy gives rational beings a special kind of intrinsic value. Since knowledge of intrinsic values would have to be a kind of metaphysical knowledge, this interpretation is contrary to Kant’s strictures on the limits of knowledge. Rather, Kant thinks that only rational beings can engage in reciprocal lawmaking, which is the source of moral laws. Animals cannot obligate us in the sense of participating in making laws for us. This, however, ignores a second sense in which we can have duties to animals: the laws we make for the treatment of people might also cover the treatment of animals. The chapter ends by explaining why it is hard to get this kind of conclusion using the universalization test.

A Naturalistic Intrinsic Value Theodicy

2019 ◽  
pp. 236-258
Author(s):  
Scott A. Davison
Keyword(s):  
Intrinsic Value ◽  
Natural Sciences ◽  
Human Freedom ◽  
Human Survival ◽  
Divine Intervention ◽  
Intrinsic Values ◽  
The World ◽  
The Universe

The theodicy explored in Chapter 13 is naturalistic in the sense that it does not appeal to the existence of good things or events or processes that cannot be studied using the natural sciences. More specifically, unlike most of the theodicies that are typically discussed in the literature, this one does not involve any claims about human survival of death, the existence of a soul, libertarian human freedom, or divine intervention, miraculous or otherwise. The theodicy explored here involves the following claims: Everything that exists is intrinsically valuable to some degree; the universe as a whole is a thing of immense intrinsic value; the immense intrinsic value of the universe as a whole provides God with a justifying reason for creating it; the evil in the world is offset by the intrinsic values of the creatures affected together with the intrinsic value of the world that comes from its regularity.

scholarly journals The effects of dust on the derived photometric parameters of disks and bulges in spiral galaxies

2012 ◽  
Vol 8 (S292) ◽  
pp. 290-290
Author(s):  
B. A. Pastrav ◽  
C. C. Popescu ◽  
R. J. Tuffs ◽  
A. E. Sansom
Keyword(s):  
Surface Brightness ◽  
Spiral Galaxies ◽  
Intrinsic Value ◽  
Central Surface ◽  
Intrinsic Values ◽  
Balmer Lines ◽  
The One ◽  
The Individual ◽  
Dust Effects ◽  
Simulated Images

AbstractHere we present results on the effects of dust on the derived Sérsic index of disks and bulges. This is part of a larger study (see Pastrav et al. 2012a, Pastrav et al. 2012b) that quantifies the dust effects on all photometric parameters, including scale-lengths, axis-ratios, central surface brightness and effective radii of individual and decomposed (from B/D decomposition) disks and bulges. The effects of dust are derived for both broadband and narrow line (Balmer lines) images. The changes in the derived photometric parameters from their intrinsic values (as seen in the absence of dust) were obtained by fitting simulated images of disks and bulges produced using radiative transfer calculations and the model of Popescu et al. (2011). This study follows on the analysis of Möllenhoff et al. (2006), who quantified the effects of dust on the photometry of old stellar disks seen at low and intermediate inclination. We extend the study to disks at all inclinations and we investigate the changes in the photometry of young stellar disks and bulges. For the individual components, in the majority of cases: 1) the dust lowers the Sérsic index from its intrinsic value; 2) the Sérsic index decreases as the inclination and the B band central face-on dust opacity, τBf, increase. For the decomposed disks and bulges, dust slightly increases the Sérsic index as compared with the one derived on individual components (e.g. Fig. 1); this effect is stronger for higher values of the inclination, τBf and B/D.

scholarly journals SOLVING THE INVERSE PROBLEM WITH INHOMOGENEOUS UNIVERSES

2011 ◽  
Vol 01 ◽  
pp. 234-239
Author(s):  
CHUL-MOON YOO ◽  
TOMOHIRO KAI ◽  
KEN-ICHI NAKAO
Keyword(s):  
Inverse Problem ◽  
Dark Matter ◽  
Cold Dark Matter ◽  
Big Bang ◽  
Universe Model ◽  
Cosmological Redshift ◽  
Λcdm Model ◽  
The Big Bang ◽  
The Universe ◽  
Dust Universe

We construct the Lemaître-Tolman-Bondi (LTB) dust universe whose distance-redshift relation is equivalent to that in the concordance Λ cold dark matter (ΛCDM) cosmological model. In our model, the density distribution and velocity field are not homogeneous, whereas the big-bang time is uniform, which implies that the universe is homogeneous at its beginning. We also study the temporal variation of the cosmological redshift and show that, by the observation of this quantity, we can distinguish our LTB universe model from the concordance ΛCDM model, even if their redshift-distance relations are equivalent to each other.

scholarly journals Double dark matter admixed neutron star

2018 ◽  
Vol 27 (16) ◽  
pp. 1950002 ◽  
Author(s):  
Zeinab Rezaei
Keyword(s):  
Dark Matter ◽  
Neutron Star ◽  
Equation Of State ◽  
Neutron Stars ◽  
Equations Of State ◽  
Compact Object ◽  
Gravitational Redshift ◽  
Two Fluid

The dark matter (DM) in neutron stars can exist from the lifetime of the progenitor or when captured by this compact object. The properties of DM that enter the neutron stars through each step could be different from each other. Here, we investigate the structure of neutron stars which are influenced by the DM in two processes. Applying a generalization of two-fluid formalism to three-fluid one and the equation-of-state from the rotational curves of galaxies, we explore the structure of double DM admixed neutron stars. The behavior of the neutron and DM portions for these stars is considered. In addition, the influence of the DM equations of state on the stars with different contributions of visible and DM are studied. The gravitational redshift of these stars in different cases of DM equations of state is investigated.

scholarly journals DUALITY INVARIANCE AND COSMOLOGICAL DYNAMICS

2008 ◽  
Vol 17 (12) ◽  
pp. 2229-2254 ◽  
Author(s):  
LUIS P. CHIMENTO ◽  
WINFRIED ZIMDAHL
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Scalar Fields ◽  
Chaplygin Gas ◽  
Curvature Scalar ◽  
Duality Transformation ◽  
Duality Transformations ◽  
Cosmic Medium ◽  
Two Component ◽  
Pressure Perturbations

A duality transformation that interrelates expanding and contracting cosmological models is shown to single out a duality invariant, interacting two-component description of any irrotational, geodesic and shear-free cosmic medium with vanishing three-curvature scalar. We have applied this feature to a system of matter and radiation, to a mixture of dark matter and dark energy, to minimal and conformal scalar fields, and to an enlarged Chaplygin gas model of the cosmic substratum. We have extended the concept of duality transformations to cosmological perturbations and demonstrated the invariance of adiabatic pressure perturbations under these transformations.

scholarly journals An Intrinsic Value Approach to Valuation with Forward–Backward Loops in Dividend Paying Stocks

Mathematics ◽  
2021 ◽  
Vol 9 (13) ◽  
pp. 1520
Author(s):  
Anna Kamille Nyegaard ◽  
Johan Raunkjær Ott ◽  
Mogens Steffensen
Keyword(s):  
Stochastic System ◽  
Intrinsic Value ◽  
Numerical Approach ◽  
Deterministic System ◽  
Underlying Asset ◽  
Numerical Example ◽  
Dividend Payments ◽  
Intrinsic Values ◽  
Equity Value ◽  
Asset Value

We formulate a claim valuation problem where the dynamics of the underlying asset process contain the claim value itself. The problem is motivated here by an equity valuation of a firm, with intermediary dividend payments that depend on both the underlying, that is, the assets of the company, and the equity value itself. Since the assets are reduced by the dividend payments, the entanglement of claim, claim value, and underlying is complete and numerically challenging because it forms a forward–backward stochastic system. We propose a numerical approach based on disentanglement of the forward–backward deterministic system for the intrinsic values, a parametric assumption of the claim value in its intrinsic value, and a simulation of the stochastic elements. We illustrate the method in a numerical example where the equity value is approximated efficiently, at least for the relevant ranges of the asset value.

scholarly journals Gravitational Redshift and Dark Matter: Application to SO-2’s Case

OALib ◽  
2018 ◽  
Vol 05 (05) ◽  
pp. 1-10
Author(s):  
Stéphane Le Corre
Keyword(s):  
Dark Matter ◽  
Gravitational Redshift

scholarly journals Intrinsic Value vs. Market Price: The Excess Return Period And That Elusive Margin Of Safety

2011 ◽  
Vol 2 (9) ◽  
Author(s):  
Darryl G. Waldron
Keyword(s):  
Return Period ◽  
Intrinsic Value ◽  
Market Price ◽  
Free Cash Flow ◽  
Excess Return ◽  
Value Drivers ◽  
Cross Sectional ◽  
Market Prices ◽  
Intrinsic Values ◽  
Margin Of Safety

The principle of convergence is well understood and most accept that in the long-term, market price and intrinsic value will converge. At any point in time, however, one may expect to see significant divergence between price and value. This analysis features a cross-sectional examination of 460 of the S&P 500 companies at a time when the market is under extreme duress. Of interest is the extent to which the market prices and intrinsic values of these firms are convergent, the value drivers responsible for the convergence/divergence, and the extent to which changes in the excess return period may influence valuations and, in turn, an investors margin of safety. A discriminant analysis provides a basis for distinguishing between those firms priced above and those priced below their respective intrinsic values and for identifying those variables that account for most of the between-group separation. Subsequently, intrinsic values are derived using different excess return periods and the resulting effect on the margin of safety is observed. Intrinsic values for the sample firms are derived from an estimate of free cash flow to the firm using Rappaports (1998) model.

scholarly journals ICT services features to support intrinsic value activities for productive ageing

2020 ◽  
Vol 17 (2) ◽  
pp. 1096
Author(s):  
Norisan Abd Karim ◽  
Haryani Haron ◽  
Wan Adilah Wan Adnan
Keyword(s):  
Intrinsic Motivation ◽  
Intelligent Agents ◽  
Intrinsic Value ◽  
Online Communication ◽  
Communication Channels ◽  
Community Based ◽  
Intrinsic Values ◽  
Productive Ageing ◽  
Made In ◽  
Low Motivation

Intrinsic values associated with ICT services activities in productive ageing. Given the advances made in ICT services that have been widely used, elderlies need to be equipped with the knowledge in using the services. The lack of ICT usage among elderlies is because of the low motivation to use the ICT applications. This in turn could be due to the lack of intrinsic values associated with the use of ICT applications among elderlies. This study explores further the features of ICT services needed to support intrinsic values activities. Brainstorming sessions is conducted in this study where it involved six ICT experts in order to identify ICT services features to support intrinsic value activities. Intrinsic motivation features are significant features in ICT services to support intrinsic value activities for productive ageing. There are five intrinsic motivation features identified in this research, which are autonomy, competence, relatedness, altruism and curiosity. The ICT services to support intrinsic value activities model comprises of the ICT services characteristics that are transactive, community-based with online communication channels, and incorporated with intelligent agents.

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