Results 81 to 90 of about 295,900 (371)
Lower bounds on photometric redshift errors from Type Ia supernovae templates [PDF]
, 2009 Cosmology with Type Ia supernovae heretofore has required extensive spectroscopic follow-up to establish a redshift. Though tolerable at the present discovery rate, the next generation of ground-based all-sky survey instruments will render this approach ...
Asztalos +20 more
core +3 more sources
An improved redshift indicator for Gamma-Ray Bursts, based on the prompt emission
, 2006 We propose an improved version of the redshift indicator developed by Atteia (2003), which gets rid of the dependence on the burst duration and provides better estimates for high-redshift GRBs.
Atteia, Jean-Luc +4 more
core +2 more sources
The Radio-to-Submillimeter Flux Density Ratio of Galaxies as a Measure of Redshift [PDF]
, 2000 We re-examine the technique of determining the redshifts of galaxies from the ratio of the submillimeter-to-radio continuum flux densities based on a recently published catalog of 850~$\mu$m sources.
Bertoldi, Scott, Siebenmorgen
core +3 more sources
Infrared resummation for biased tracers in redshift space [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 We incorporate the effects of redshift space distortions and non-linear bias in time-sliced perturbation theory (TSPT). This is done via a new method that allows to map cosmological correlation functions from real to redshift space.
M. Ivanov, S. Sibiryakov
semanticscholar +1 more source
Fast Radio Burst Energy Function in the Presence of DMhost Variation
UniverseFast radio bursts (FRBs) have been found in great numbers, but the physical mechanism of these sources is still a mystery. The redshift evolutions of the FRB energy distribution function and the volumetric rate shed light on the origin of FRBs.
Ji-Guo Zhang +5 more
doaj +1 more source
High Redshift Candidates and the Nature of Small Galaxies in the Hubble Deep Field [PDF]
, 2003 We present results on two related topics: 1. A discussion of high redshift candidates (z>4.5), and 2. A study of very small galaxies at intermediate redshifts, both sets being detected in the region of the northern Hubble Deep Field covered by deep ...
Lisa J. Storrie‐Lombardi +3 more
core +2 more sources
The Redshift of the BL Lac Object TXS 0506+056 [PDF]
, 2018 The bright BL Lac object TXS 0506+056 is the most likely counterpart of the IceCube neutrino event EHE 170922A. The lack of this redshift prevents a comprehensive understanding of the modeling of the source.
S. Paiano +3 more
semanticscholar +1 more source
Test of the Gravitational Redshift with Galileo Satellites in an Eccentric Orbit. [PDF]
Physical Review Letters, 2018 On August 22, 2014, the satellites GSAT-0201 and GSAT-0202 of the European GNSS Galileo were unintentionally launched into eccentric orbits. Unexpectedly, this has become a fortunate scientific opportunity since the onboard hydrogen masers allow for a ...
S. Herrmann +16 more
semanticscholar +1 more source
The Angular Diameter-Redshift Test for Large Redshift Quasars [PDF]
Symposium - International Astronomical Union, 1977 Complete samples of quasars in the 3CR and 4C catalogues have been observed with a resolution of 2″ arc in RA and 2″ cosecδ in dec with the Cambridge 5-km telescope at 5 GHz (Riley & Pooley 1975; Jenkins et al 1977), from which it has been possible to determine the overall angular sizes of their radio structures (LAS). The angular diameter-redshift
J. M. Riley, A. Hooley, M. S. Longair
openaire +2 more sources
Redshifts and Killing vectors [PDF]
American Journal of Physics, 2006 Current approaches to physics stress the importance of conservation laws due to spacetime and internal symmetries. In special and general relativity the generators of these symmetries are known as Killing vectors. We use them for the rigorous determination of gravitational and cosmological redshifts.
Alex Harvey +2 more
openaire +3 more sources