missing mass
Recently Published Documents


TOTAL DOCUMENTS

284
(FIVE YEARS 21)

H-INDEX

24
(FIVE YEARS 1)

Author(s):  
Nelson Falcon

We take a heterodox approach to the ΛFRW Cosmology starting from the modification of Newtonian gravity by explicitly incorporating Mach's Principle through an additional term a great scale in the gravitation. The results show that at the after of the matter-radiation decoupling, the distribution of matter at scales greater than 10Mpc contributes with an inverse Yukawa-like field, which verifies the observations: resulting null in the inner solar system, weakly attractive in ranges of interstellar comoving distances, very attractive in comoving distance ranges comparable to the clusters of galaxies, and repulsive in cosmic scales. This additional term explains dark energy, removes the incompatibility between the density of matter and the flatness of the universe; and also allows the theoretical deduction of the Hubble-Lemaitre Law. Additionally, Birkhoff Theorem, Virial Theorem, the missing mass of Zwicky, the BAO, gravitational redshift are discussed. It is concluded that the dark energy and the missing mass can be approached with the usual physics if a classical, large-scale modification of the Inverse Square Law.


Physics World ◽  
2021 ◽  
Vol 34 (10) ◽  
pp. 25v-25v
Author(s):  
Chris Atkins

In response to the Lateral Thoughts quiz “Sporting chance”, in which question 8 asked for a rough estimate of the theoretical maximum height a pole vaulter could jump, and why the actual world record is slightly above this.


Physics World ◽  
2021 ◽  
Vol 34 (11) ◽  
pp. 28v-28v
Author(s):  
Chris Atkins
Keyword(s):  

A clarification on the letter “The missing mass”, concerning the pole vault in question 8 of the decathlon puzzle “Sporting chance”.


Author(s):  
M. Santander-García ◽  
D. Jones ◽  
J. Alcolea ◽  
V. Bujarrabal ◽  
R. Wesson

Author(s):  
Fadhel Ayed ◽  
Marco Battiston ◽  
Federico Camerlenghi ◽  
Stefano Favaro

2021 ◽  
Author(s):  
Jian'an Wang

Abstract In this paper, Newton's gravitational formula is modified by the principle of spatial energy field superposition, and the problem of "missing mass " of galaxies is analyzed by this modified gravitational formula. It is concluded that the velocity of stars in the galaxy is too fast because the energy field intensity of the inner space of the galaxy or space-time curvature of the galaxy is seriously underestimated, and there is no dark matter and supermassive black hole in the galaxy.


2021 ◽  
Vol 251 ◽  
pp. 04029
Author(s):  
Yuri Fisyak ◽  
Victor Ivanov ◽  
Hongwei Ke ◽  
Ivan Kisel ◽  
Pavel Kisel ◽  
...  

The search for short-lived particles is usually the final stage in the chain of event reconstruction and precedes event selection when operating in online mode or physics analysis when operating in offline mode. Most often such short-lived particles are neutral and their search and reconstruction is carried out using their daughter charged particles resulting from their decay. The use of the missing mass method makes it possible to find and analyze also decays of charged short-lived particles, when one of the daughter particles is neutral and is not registered in the detector system. One of the most known examples of such decays is the decay Σ− → nπ−. In this paper, we discuss in detail the missing mass method, which was implemented as part of the KF Particle Finder package for the search and analysis of short-lived particles, and describe the use of the method in the STAR experiment (BNL, USA). The method was used to search for pion (π± → μ±ν) and kaon (K± → μ±ν and K± → π±π0) decays online on the HLT farm in the express production chain. An important feature of the express production chain in the STAR experiment is that it allows one to start calibration, production, and analysis of the data immediately after receiving them. Here, the particular features and results of the real-time application of the method within the express processing of data obtained in the BES-II program at a beam energy of 3.85 GeV/n when working with a fixed target are presented and discussed.


2021 ◽  
Vol 12 (06) ◽  
pp. 806-828
Author(s):  
Dipartimento di Fisica
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document