Constraining Temporal Oscillations of Cosmological Parameters Using SNe Ia
نویسندگان
چکیده
منابع مشابه
Constraining Cosmological Parameters with Cmb Measurements
The current enthusiam to measure fluctuations in the CMB power spectrum at angular scales between 0.1 and 1 is largely motivated by the expectation that CMB determinations of cosmological parameters will be of unprecedented precision. In such circumstances it is important to estimate what we can already say about the cosmological parameters. In two recent papers (Lineweaver et al. 1997a & 1997b...
متن کاملSNE IA CONSTRAINTS FROM NIR SPECTRA 3 use of SNe
RESUMEN El resumen será traducido al español por los editores. We describe a research program to improve the understanding of Type Ia Super-novae (SNe Ia) by modeling and observing near infrared (NIR) spectra of these events. The NIR between 0.9µ and 2.5µ is optimal for examining certain products of the SNe Ia explosion that may be blended or obscured in other spectral regions. NIR analysis wil...
متن کاملCOSMOGRAPHIC EVALUATION OF DECELERATION PARAMETER USING SNe Ia DATA
The apparent magnitude-redshift data of SNe Ia call for modifications in the standard model energy densities. Under the circumstance that this modification cannot be limited to the addition of a mere cosmological constant, a serious situation has emerged in cosmology, in which the energy densities in the universe have become largely speculative. In this situation, an equation of state of the fo...
متن کاملConstraining Gravitational and Cosmological Parameters with Astrophysical Data
We use astrophysical data to shed light on fundamental physics by constraining parametrized theoretical cosmological and gravitational models. Gravitational parameters are those constants that parametrize possible departures from Einstein’s general theory of relativity (GR). We develop a general framework to describe torsion in the spacetime around the Earth, and show that certain observables o...
متن کاملThe Weak Bimodality in Type Ia Sne
We comment on the presence of a bimodality in the distribution of delay time between the formation of the progenitors and their explosion as type Ia SNe. Two "flavors" of such bimodality are present in the literature: a weak bimodality, in which type Ia SNe must explode from both young and old progenitors, and a strong bimodality, in which about half of the systems explode within 108 years from...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2019
ISSN: 1538-4357
DOI: 10.3847/1538-4357/ab0c09