Pulsar timing array constraints on spin-2 ULDM

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00540696" target="_blank" >RIV/68378271:_____/20:00540696 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1088/1475-7516/2020/09/031" target="_blank" >https://doi.org/10.1088/1475-7516/2020/09/031</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1475-7516/2020/09/031" target="_blank" >10.1088/1475-7516/2020/09/031</a>

Result language
angličtina
Original language name
Pulsar timing array constraints on spin-2 ULDM
Original language description
Ultra-light Dark Matter (ULDM) models are suitable candidates for the cosmological Dark Matter that may leave characteristic imprints in many observables. Among other probes, signatures of ULDM can be searched for in pulsar timing data. In this work we describe the effects of spin-2 ULDM on pulsar timing arrays, extending previous results on lower spins. Spin-2 ULDM is universally coupled to standard matter with dimensionless strength α. We estimate that current data could constrain this coupling in the mass range m ≲ 4 × 10−22 eV at the 10−5 to 10−6 level, which is the most competitive constraint in this mass range. A crucial feature of the spin-2 ULDM effect on pulsar timing is its anisotropic, quadrupolar shape. This feature can be instrumental in differentiating the effects sourced by spin-2 ULDM from, for instance, scalar ULDM, and the systematics of a PTA experiment.n
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
<a href="/en/project/EF15_003%2F0000437" target="_blank" >EF15_003/0000437: Cosmology, Gravity and the Dark Sector of the Universe</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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