The double radio source 3C 343.1: A galaxy-QSO pair  with very different redshifts

Arp, Halton; Burbidge, E. M.; Burbidge, G. R.

doi:10.1051/0004-6361:20031745

Cited by 7 publications

(4 citation statements)

References 21 publications

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“…3CRR Data obtained from M. Hardcastle's updated version of theLaing et al (1983) 3CRR catalogue (available at https://3crr.extragalactic.info/). 3C 343.1 was excluded from the sample(Arp et al 2004).…”

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confidence: 99%

Accretion mode versus radio morphology in the LOFAR Deep Fields

Mingo,

Croston,

Best

et al. 2022

Preprint

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Radio-loud active galaxies have two accretion modes [radiatively inefficient (RI) and radiatively efficient (RE)], with distinct optical and infrared signatures, and two jet dynamical behaviours, which in arcsec-to arcmin-resolution radio surveys manifest primarily as centre-or edge-brightened structures [Fanaroff-Riley (FR) class I and II]. The nature of the relationship between accretion mode and radio morphology (FR class) has been the subject of long debate. We present a comprehensive investigation of this relationship for a sample of 286 well-resolved radio galaxies in the LOFAR Two-metre Sky Survey Deep Fields (LoTSS-Deep) first data release, for which robust morphological and accretion mode classifications have been made. We find that two-thirds of luminous FRII radio galaxies are RI, and identify no significant differences in the visual appearance or source dynamic range (peak/mean surface brightness) of the RI and RE FRIIs, demonstrating that both RI and RE systems can produce FRII structures. We also find a significant population of low-luminosity FRIIs (predominantly RI), supporting our earlier conclusion that FRII radio structures can be produced at all radio luminosities. We demonstrate that in the luminosity range where both morphologies are present, the probability of producing FRI or FRII radio morphology is directly linked to stellar mass, while across all morphologies and luminosities, RE accretion occurs in systems with high specific star formation rate, presumably because this traces fuel availability. In summary, the relationship between accretion mode and radio morphology is very indirect, with host-galaxy environment controlling these two key parameters in different ways.

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confidence: 99%

Accretion mode versus radio morphology in the LOFAR Deep Fields

Mingo,

Croston,

Best

et al. 2022

Preprint

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“…Halton Arp had presented a large volume of data to show that large quasar redshifts are mostly their intrinsic redshifts and have little correlation with distance (Arp, Burbidge E., & Burbidge G., 2004). They have collected data to show that some of the high redshift quasars are in fact physically connected with low redshift galaxies (Arp & Fulton, 2008).…”

Section: High Astronomical Red Shifts Associated With Relativistic Shmentioning

confidence: 99%

Distinct Doppler Effects for Spontaneously Emitted Photons and Continuously Emitted Waves

Sandhu¹

2017

APR

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In this paper, we distinguish between the Doppler effects for spontaneously emitted photons and continuously emitted waves. Under certain plausible assumptions, electron orbits can be modeled for simple atomic systems and such studies show that all permissible electron trajectories correspond to elliptical orbits. From the conservation of energy, momentum and angular momentum, in conjunction with the geometrical model of electron orbits, we derive the Doppler effect for spontaneously emitted photons that is quite different from the one used for continuously generated waves. All astronomical redshifts are currently interpreted by assuming the incoming radiation to be continuously emitted waves. Therefore, widely-observed redshift in radiation from most astronomical sources is interpreted to imply the expanding universe, along with cosmological expansion of space. However, for the spontaneously emitted photons, we show that the photons emitted in forward direction parallel to the emitter velocity get redshifted. That means, the astronomical redshift implies that the emission sources are moving towards the observer and our universe is not expanding. All high redshift astronomical objects are likely to be physically disrupted through dynamic instabilities or explosions and their high redshifts are associated with relativistic shock waves propagating towards the observer. Hence the proposed Doppler effect for the spontaneously emitted photons dismisses the cosmological expansion of space and supports a steady state universe.

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“…Even more important than thinking about gravitational lensing or discussing the probabilities of background projections is being sure that the identification of QSOs and their redshifts is correct. For instance, cases like 3C 343.1 (Arp et al 2004a), if we believe that they are indeed a radio galaxy at z=0.34 and a radio QSO at z=0.75 separated by 0.25", are really spectacular, but are we sure of the correct identification of the sources?…”

Section: Gravitational Lensingmentioning

confidence: 99%

Apparent discordant redshift QSO-galaxy associations

Lopez-Corredoira

2009

Preprint

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An "exotic" idea proposed by Viktor Ambartsumian was that new galaxies are formed through the ejection from older active galaxies. Galaxies beget galaxies, instead of the standard scenario in which galaxies stem from the evolution of the seeds derived from fluctuations in the initial density field. This idea is in some way contained in the speculative proposal that some or all QSOs might be objects ejected by nearby galaxies, and that their redshift is not cosmological (Arp, G./M. Burbidge and others).I will discuss some of the arguments for and against this scenario; in particular, I shall talk about the existence of real physical connections in apparently discordant QSO-galaxy redshift associations. On the one hand, there are many statistical correlations of high-redshift QSOs and nearby galaxies that cannot yet be explained in terms of gravitational lensing, biases, or selection effects; and some particular configurations have very low probabilities of being a projection of background objects. Our understanding of QSOs in general is also far from complete. On the other hand, some cases which were claimed to be anomalous in the past have found an explanation in standard terms. As an example, I will show some cases of our own research into this type: statistics of ULXs around nearby galaxies, and the Flesch & Hardcastle candidate QSOs catalog analysis. My own conclusion is neutral.1 The problem and the observations that give rise to it Viktor A. Ambartsumian suggested the idea that new galaxies are formed through ejection from older active galaxies (Ambartsumian 1958). This idea has had a certain continuity in the research carried out over the last 40 years based on the hypothesis that some extragalactic objects, and in particular high redshift QSOs, might be associated with low redshift galaxies, thus providing a non-cosmological explanation for the redshift in QSOs (e.g.,

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The double radio source 3C 343.1: A galaxy-QSO pair with very different redshifts

Cited by 7 publications

References 21 publications

Accretion mode versus radio morphology in the LOFAR Deep Fields

Accretion mode versus radio morphology in the LOFAR Deep Fields

Distinct Doppler Effects for Spontaneously Emitted Photons and Continuously Emitted Waves

Apparent discordant redshift QSO-galaxy associations

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