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Related papers: Quasar Redshifts: The Intrinsic Component

200 papers

Astronomical or cosmological redshifts are an observable property of extragalactic objects and have historically been wholly attributed to the recessional velocity of that object. The question of other, or intrinsic, components of the…

Astrophysics of Galaxies · Physics 2015-06-12 Peter M. Hansen

Quasars of high redshift may be ejected from a nearby active galaxy of low redshift. This physical association then leads to the suggestion that the redshifts of quasars are not really an indication of their distances. In this…

General Physics · Physics 2007-05-23 Ching-Chuan Su

Further investigation of data on quasars, especially in the ultraviolet band, yields an amazingly coherent narrative which we present in this paper. Quasars are characterised by strong continuum emission and redshifted emission and…

Astrophysics of Galaxies · Physics 2017-12-07 Nimisha G. Kantharia

It is commonly accepted that quasar redshifts have a cosmological character and that most of the quasars are at Gigaparsec distances. However, there are some cases where several quasars with completely different redshifts and a nearby…

Astrophysics · Physics 2009-11-10 Piotr Popowski , Wolfgang Weinzierl

In this letter, the old issue of whether redshifts of quasars are of cosmological origin is investigated. We make a plot of absorption redshifts versus emission redshifts for quasars with large amounts of data. Our study shows that, almost…

Astrophysics · Physics 2007-05-23 Yi-Ping Qin , Guang-Zhong Xie , Xue-Tang Zheng , En-Wei Liang

Quasars have reigned as the most luminous and distant objects in the Universe. These concepts were based on the hypothesis that the redshifts of quasars are obeying the Hubble low. This hypothesis has little serious competition today, but…

General Physics · Physics 2013-10-02 Yi-Jia Zheng

The results from the Supernova Cosmology Project indicate a relation between cosmic distance and redshift that corresponds to an accelerating Universe, and, as a consequence, the presence of an energy component with negative pressure. This…

Astrophysics · Physics 2007-05-23 Daniel Enstrom , Sverker Fredriksson , Johan Hansson

Quasars, as the most luminous persistent sources in the Universe, have broad applications for cosmological studies. In particular, they can be employed to directly measure the expansion history of the Universe, similarly to SNe Ia. The…

Cosmology and Nongalactic Astrophysics · Physics 2014-10-02 J. Modzelewska , B. Czerny , M. Bilicki , K. Hryniewicz , M. Krupa , F. Petrogalli , W. Pych , A. Kurcz , A. Udalski

A new interaction, plasma redshift, is derived, which is important only when photons penetrate a hot, sparse electron plasma. The derivation of plasma redshift is based entirely on conventional axioms of physics. When photons penetrate a…

Astrophysics · Physics 2009-09-29 Ari Brynjolfsson

The variation of the expansion rate of the Universe with time produces an evolution in the cosmological redshift of distant sources (for example quasar Lyman-$\alpha$ absorption lines), that might be directly observed by future ultra…

Astrophysics · Physics 2009-11-13 A. Balbi , C. Quercellini

The first and most compelling evidence of the universe's expansion was, and continues to be, the observed redshift of spectra from distant objects. This paper plays "devil's advocate" by providing an alternative explanation with elementary…

General Physics · Physics 2008-05-10 David Schuster

After estimating and removing all ejection-related Doppler components from the redshifts of the QSOs near NGC 1068, the remaining redshift is assumed to be intrinsic. This well-studied case is the first example in which it has finally been…

Astrophysics · Physics 2007-05-23 M. B. Bell

The accretion of a cloud of hydrogen at the surface of a small, heavy star produces a high energy mostly dissipated by electromagnetic radiation. The combination of the absorption and the redshift of this radiation by hydrogen explains all…

Astrophysics · Physics 2007-05-23 Jacques Moret-Bailly

Observations increasingly demonstrate the spatial association of high redshift objects with larger, low redshift galaxies. These companion objects show a continuous range of physical properties - from very compact, high redshift quasars,…

Astrophysics · Physics 2007-05-23 Halton Arp

It has always been considered a serious error to treat the cosmological redshift as a Doppler velocity effect rather than the result of space expansion. It is demonstrated here that in practical terms this is not the case, and that the…

General Physics · Physics 2007-05-23 Alasdair Macleod

The quantification of the redshifts of the lines observed in the spectra of the quasars and the galaxies (the redshifts of their lines have some of the values given by the formula z=a+0.062m where a depends on the object, and m is an…

Astrophysics · Physics 2007-05-23 Jacques Moret-Bailly

Spectra of quasars result primarily from interactions of natural light with atomic hydrogen. A visible absorption of a sharp and saturated spectral line in a gas requires a low pressure, so a long path without blushing as a cosmological…

Instrumentation and Methods for Astrophysics · Physics 2015-12-31 Jacques Moret-Bailly

Quasars at large redshifts provide a powerful probe of structure formation in the early universe. Several arguments suggest that the formation of ellipticals and massive bulges may have involved an early quasar phase. At very large…

Astrophysics · Physics 2007-05-23 S. G. Djorgovski

Powerful radio sources and quasars emit relativistic jets of plasma and magnetic fields that travel hundreds of kilo-parsecs, ultimately depositing energy into the intra- or inter-cluster medium. In the rest frame of the jet, the energy…

With the recent observational evidence in extra galactic astronomy, the interpretation of the nature of quasar redshift continues to be a research interest. Very high redshifts are being detected for extragalactic objects that are…

Astrophysics of Galaxies · Physics 2024-08-15 Arindam Mal , Sarbani Palit , Christopher C. Fulton , Sisir Roy
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