Neutrinos

Our Best Look at the Cosmic Web

Updated: 2025-02-04 23:35:50

At first glance the large scale structure of the Universe may seem to be a swarming mass of unconnected galaxies. Yet somehow, they are! The ‘cosmic web’ is the largest scale structure of the Universe and consists of vast networks of interconnected filamentary structures that surround empty voids. A team of astronomers have used hundreds … Continue reading "Our Best Look at the Cosmic Web" The post Our Best Look at the Cosmic Web appeared first on Universe Today.

Even Microquasars are Powerful Particle Accelerators

Updated: 2025-02-04 15:52:33

Quasars are the actively feeding supermassive black holes at the hearts of galaxies and can contain millions or even billions of times the mass of the Sun. It's believed they're the source of some of the highest energy cosmic rays detected. But there are also microquasars, where a star and black hole orbit one another. Material from the star accretes around the black hole, and the magnetic fields form jets that can also hurl cosmic rays with similar energies. The post Even Microquasars are Powerful Particle Accelerators appeared first on Universe Today.

Article on Testing Non standard Neutrino Properties at Arxiv

Updated: 2025-01-09 03:01:00

https://www.arxiv.org/abs/2501.04309

Limits on new gauge vector forces and associated mass giving scalars for Z decay

Updated: 2025-01-09 02:57:00

The new paper at ArXiv https://www.arxiv.org/abs/2501.04388 by Peli and Trocsanyi linit show how Higgs Bosons decay measurements can limit new Bosons. The current measurement of Z width is not yet strong enough to limit all new models. The SM theoretical prediction for the Higgs boson width is ΓSM h = 4.07 MeV, with a relative uncertainty of 4% [3]. The experimental measurements on the other hand are ΓATLAS h = 4.5+3.3 −2.5 MeV [17] and ΓCMS h = 3.2+2.4 −1.7 MeV [18], display a much larger uncertainty than the SM theoretical prediction allowing for several BSM models to remain compatible with observations.