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Constraining neutro...
Constraining neutron-star matter with microscopic and macroscopic collisions
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Huth, Sabrina (author)
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Pang, Peter T. H. (author)
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Tews, Ingo (author)
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Dietrich, Tim (author)
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Le Fèvre, Arnaud (author)
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Schwenk, Achim (author)
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Trautmann, Wolfgang (author)
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Agarwal, Kshitij (author)
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- Bulla, Mattia (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Coughlin, Michael W. (author)
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Van den Broeck, Chris (author)
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(creator_code:org_t)
- 2022-06-08
- 2022
- English.
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In: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 606:7913, s. 276-280
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
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- Interpreting high-energy, astrophysical phenomena, such as supernova explosions or neutron-star collisions, requires a robust understanding of matter at supranuclear densities. However, our knowledge about dense matter explored in the cores of neutron stars remains limited. Fortunately, dense matter is not probed only in astrophysical observations, but also in terrestrial heavy-ion collision experiments. Here we use Bayesian inference to combine data from astrophysical multi-messenger observations of neutron stars(1-9) and from heavy-ion collisions of gold nuclei at relativistic energies(10,11) with microscopic nuclear theory calculations(12-17) to improve our understanding of dense matter. We find that the inclusion of heavy-ion collision data indicates an increase in the pressure in dense matter relative to previous analyses, shifting neutron-star radii towards larger values, consistent with recent observations by the Neutron Star Interior Composition Explorer mission(5-8,18). Our findings show that constraints from heavy-ion collision experiments show a remarkable consistency with multi-messenger observations and provide complementary information on nuclear matter at intermediate densities. This work combines nuclear theory, nuclear experiment and astrophysical observations, and shows how joint analyses can shed light on the properties of neutron-rich supranuclear matter over the density range probed in neutron stars.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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- art (subject category)
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- By the author/editor
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Huth, Sabrina
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Pang, Peter T. H ...
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Tews, Ingo
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Dietrich, Tim
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Le Fèvre, Arnaud
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Schwenk, Achim
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show more...
-
Trautmann, Wolfg ...
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Agarwal, Kshitij
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Bulla, Mattia
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Coughlin, Michae ...
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Van den Broeck, ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Nature
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Stockholm University