The connection of two neutron stars showing electromagnetic and gravitational-wave emissions during the merger process. The combined interpretation of multiple messengers allows astrophysicists to understand the internal structure of neutron stars and to reveal the properties of matter in the most extreme conditions of the universe. Credit: Tim Dietrich
The combination of astrophysical measurements has allowed researchers to place new barriers on the radius of a typical neutron star and provide an innovative calculation of Hubble stability that indicates the rate of expansion of the universe.
“We studied the signals received from various sources, for example recently observed the fusion of neutron stars,” said Ingo Tuez, a theorist at the Nuclear and Particle Physics, Astrophysics and Cosmology Group at the Los Alamos National Laboratory. Appears in the journal on analysis Science On December 18th. “We jointly analyzed the gravitational-wave signals and electromagnetic emissions from the merger, and combined them with the previous mass measurements of pulsars or the latest results from NASA’s Neutron Star Interior Composition Explorer. Is 66.2 kilometers per second per megaparsec. “
The combination of signals to gain an understanding of distant astrophysical phenomena is known in the field as multi-messenger astronomy. In this case, the researchers’ multi-messenger analysis allowed them to limit the uncertainty of their estimates of neutron star radii to within 800 meters.
Hubble’s novel approach to measuring continuity contributes to the discussion that has arisen by others from the competitive decisions of the expansion of the universe. Criteria based on observations of explosive stars known as supernovae currently differ from those seen in Cosmic Microwave Background (CMB), which requires energy release from the Big Bang. The uncertainties in the new multimedia Hubble calculation are too large to resolve the disagreement definitively, but there is slightly more support in measuring CMB’s approach.
The primary scientific role of TUZ in this study was to provide input from the calculations of atomic theory which is the starting point of the analysis. His seven collaborators on paper include an international team of scientists from Germany, the Netherlands, Sweden, France and the United States.
The combination of astrophysical measurements has allowed researchers to place novelty constraints on the radius of a specific neutron star and provide a new calculation of Hubble stability that indicates the rate of expansion of the universe.
The artist’s impression of two inspiring neutron stars shortly before their collision. Credit: Nickels Moldenhauer
“We studied the signals received from various sources, for example recently observed the fusion of neutron stars,” said Ingo Tuez, a theorist at the Nuclear and Particle Physics, Astrophysics and Cosmology Group at the Los Alamos National Laboratory. On the analysis of appearing in the Science Journal on December 18. “We jointly analyzed the gravitational-wave signals and electromagnetic emissions from the merger, and combined them with the previous mass measurements of the pulsar or the latest results of NASA’s Neutron Star Interior Composition Explorer. Kilometers per second per megaparsec. “
The combination of signals to gain an understanding of distant astrophysical phenomena is known in the field as multi-messenger astronomy. In this case, the researchers’ multi-messenger analysis allowed them to limit the uncertainty of their estimates of neutron star radii to within 800 meters.
Hubble’s novel approach to measuring continuity contributes to the discussion that has arisen by others from the competitive decisions of the expansion of the universe. Criteria based on observations of explosive stars known as supernovae currently differ from those seen in Cosmic Microwave Background (CMB), which requires energy release from the Big Bang. The uncertainties in the new multimedia Hubble calculation are too large to definitively dispel disagreements, but there is little support for measuring CMB’s approach.
The primary scientific role of TUZ in this study was to provide input from the calculations of atomic theory which is the starting point of the analysis. His seven collaborators on paper include an international team of scientists from Germany, the Netherlands, Sweden, France and the United States.
Future detector to detect millions of black holes and the evolution of the universe
Potsdam, University al. At the University of Potsdam in t. Dietrich, “The state of the neutron-star equation and multimedia constraints on Hubble stents,” Science (2020). Science.sciencemag.org/cgi/doi… 1126 / science.abb4317
Provided by Los Alamos National Laboratory
Testimonial: Multi-messenger astronomy gives new estimates of neutron star size and universe expansion (December 17, 2020) (https://phys.org/news/2020-12-mult-messenger-astronomy-neutron-star-size.html
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