Cosmologically Coupled Compact Objects: A Single-parameter Model for LIGO–Virgo Mass and Redshift Distributions

Croker, Kevin S.; Zevin, M.; Farrah, D.; Nishimura, K.; Tarlè, G.

doi:10.3847/2041-8213/ac2fad

Cited by 38 publications

(31 citation statements)

References 81 publications

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“…However, even allowing for a significant amount of mass in primordial black holes, merger rate predictions are sensitive assumptions about the initial distribution of such sources in binaries or small clusters (e.g., Ali-Haı ¨moud et al 2017;Korol et al 2020;De Luca et al 2020a) as well as possible accretion onto primordial black holes (De Luca et al 2020b). Meanwhile, some of the scenarios proposed for the formation of BH-BH binaries involve physics beyond the standard model (Sakstein et al 2020) and cosmological coupling (Croker et al 2021).…”

Section: Exoticamentioning

confidence: 99%

Rates of compact object coalescences

2022

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Gravitational-wave detections are enabling measurements of the rate of coalescences of binaries composed of two compact objects—neutron stars and/or black holes. The coalescence rate of binaries containing neutron stars is further constrained by electromagnetic observations, including Galactic radio binary pulsars and short gamma-ray bursts. Meanwhile, increasingly sophisticated models of compact objects merging through a variety of evolutionary channels produce a range of theoretically predicted rates. Rapid improvements in instrument sensitivity, along with plans for new and improved surveys, make this an opportune time to summarise the existing observational and theoretical knowledge of compact-binary coalescence rates.

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Section: Exoticamentioning

confidence: 99%

Rates of compact object coalescences

2022

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“…We have studied the assembly of stellar and black hole mass in low-redshift ultraluminous infrared galaxies, by combining radiative 3 It has recently been proposed that all black holes cosmologically couple and thus gain mass as the cosmological scale factor increases (Croker & Weiner 2019;Croker et al 2020Croker et al , 2021. This cosmological mass increase will cause Keplerian orbits around SMBHs to adiabatically collapse.…”

Section: Discussionmentioning

confidence: 99%

Stellar and black hole assembly in z<0.3 infrared-luminous mergers: intermittent starbursts vs. super-Eddington accretion

Farrah,

Efstathiou,

Afonso

et al. 2022

Preprint

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We study stellar and black hole mass assembly in a sample of 42 infrared-luminous galaxy mergers at 𝑧 < 0.3 by combining results from radiative transfer modelling with archival measures of molecular gas and black hole mass. The ratios of stellar mass, molecular gas mass, and black hole mass to each other are consistent with those of massive gas-rich galaxies at 𝑧 < 0.3. The advanced mergers may show increased black hole mass to stellar mass ratios, consistent with the transition from AGN to ellipticals and implying substantial black hole mass growth over the course of the merger. Star formation rates are enhanced relative to the local main sequence, by factors of ∼ 100 in the starburst and ∼ 1.8 in the host, respectively. The starburst star formation rates appear distinct to star formation in the main sequence at all redshifts up to at least 𝑧 ∼ 5. Starbursts may prefer late-stage mergers, but are observed at any merger stage. We do not find evidence that the starbursts in these low-redshift systems substantially increase the total stellar mass, with a soft upper limit on the stellar mass increase from starburst activity of about a factor of two. In contrast, 12 objects show evidence for super-Eddington accretion, associated with late-stage mergers, suggesting that many AGN in infrared-luminous mergers go through a super-Eddington phase. The super-Eddington phase may increase black hole mass by up to an order of magnitude at an accretion efficiency of 42 ± 33% over a period of 44 ± 22 Myr. Our results imply that super-Eddington accretion is an important black hole growth channel in infrared-luminous galaxies at all redshifts.

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“…In this context, recently, K.S. Crocker and team proposed that [50], during cosmic expansion and increasing cosmic age, 1) All material particles will grow in their mass content while universe is expanding.…”

Section: Discussionmentioning

confidence: 99%

Light Speed Expanding Hubble-Hawking Universe

U.V¹,

Lakshmanarayana²

2022

Preprint

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Based on three major cosmological and astrophysical coincidences, it seems possible to develop a new model of Hubble-Hawking Universe having light speed expansion. First Coincidence is - distance travelled by light in 14 billion years seems to equal to the currently believed cosmic Hubble radius. Second Coincidence is - Product of currently believed cosmic critical density and cosmic Hubble volume seems to be equal to the black hole mass of the current Hubble universe. Third Coincidence is - Currently believed cosmic temperature seems to be equal to the geometric mean of Hawking temperature of Planck mass and Hawking temperature of current Hubble mass. Considering the analysis of 740 super novae data, it is possible to consider a constant rate of cosmic expansion. As there is no physical reasoning for the observed speed of light and all the cosmological observations are completely based on speed of light-by considering ‘light speed expansion’ concept as a characteristic nature of the universe, big bang, inflation, dark energy, quintessence and lambda term like ideal and unidentified concepts can be reviewed and relinquished at fundamental level and a practical model of expanding universe can be developed with ease and clarity. In this context, we encourage the reader to see Figure 1 pertaining to light travel distances prepared with [z/(1+z)](c/H0). For a comparison, readers are encouraged to visit https://cosmocalc.icrar.org/ and http://www.atlasoftheuniverse.com/cosmodis.c. It may be noted that, considering 200 million solar masses as a cut off for ordinary gravity, dark matter can be considered as an effect of power law based super gravity of galactic baryonic mass. It is well believed that, Hawking’s findings about black holes are the most important contributions to physics in recent decades. Hence, we appeal the science community to recommend our Hubble-Hawking model for further research and study.

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Cosmologically Coupled Compact Objects: A Single-parameter Model for LIGO–Virgo Mass and Redshift Distributions

Cited by 38 publications

References 81 publications

Rates of compact object coalescences

Rates of compact object coalescences

Stellar and black hole assembly in z<0.3 infrared-luminous mergers: intermittent starbursts vs. super-Eddington accretion

Light Speed Expanding Hubble-Hawking Universe

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