Supramassive dark objects with neutron star origin
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F24%3A00377947" target="_blank" >RIV/68407700:21670/24:00377947 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.109.123006" target="_blank" >https://doi.org/10.1103/PhysRevD.109.123006</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.109.123006" target="_blank" >10.1103/PhysRevD.109.123006</a>
Alternative languages
Result language
angličtina
Original language name
Supramassive dark objects with neutron star origin
Original language description
Until today, the nature of dark matter (DM) remains elusive despite all our efforts. This missing matter of the Universe has not been observed by the already operating DM direct-detection experiments, but we can infer its gravitational effects. Galaxies and clusters of galaxies are most likely to contain DM trapped to their gravitational field. This leads us to the natural assumption that compact objects might contain DM too. Among the compact objects exist in galaxies, neutron stars are considered as natural laboratories, where theories can be tested, and observational data can be received. Thus, many models of DM have proposed its presence in those stars. In particular, in the present study we focus on two types of dark matter particles, namely, fermions and bosons with a mass range of [0.01-1.5] GeV and self-interaction strength in the range [10-4-10-1] MeV-1. By employing the two-fluid model, we discovered a stable area in the mass-radius diagram of a celestial formation consisting of neutron star matter and DM that is substantial in size. This formation spans hundreds of kilometers in diameter and possesses a mass equivalent to 100 or more times the solar mass. To elucidate, this entity resembles an enormous celestial body of DM, with a neutron star at its core. This implies that a supramassive stellar compact entity can exist without encountering any issues of stability and without undergoing a collapse into a black hole. In any case, the present theoretical prediction can, if combined with corresponding observations, shed light on the existence of DM and even more on its basic properties.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA21-24281S" target="_blank" >GA21-24281S: Experiment IS581 "(d,p)-transfer induced fission of heavy radioactive beams"</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
2470-0010
e-ISSN
2470-0029
Volume of the periodical
109
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
"123006-1"-"123006-11"
UT code for WoS article
001240759700008
EID of the result in the Scopus database
2-s2.0-85195395373