Evolution of primordial dark matter planets in the early Universe

Title

Evolution of primordial dark matter planets in the early Universe

Creator

Kiren O.V.; Arun K.; Sivaram C.

Description

In a recent paper we had discussed possibility of DM at high redshifts forming primordial planets composed entirely of DM to be one of the reasons for not detecting DM (as the flux of ambient DM particles would be consequently reduced). In this paper we discuss the evolution of these DM objects as the Universe expands. As Universe expands there will be accretion of DM, helium and hydrogen layers (discussed in detail) on these objects. As they accumulate more and more mass, the layers get heated up leading to nuclear reactions which burn H and He when a critical thickness is reached. In the case of heavier masses of these DM objects, matter can be ejected explosively. It is found that the time scale of ejection is smaller than those from other compact objects like neutron stars (that lead to x-ray bursts). These flashes of energy could be a possible observational signature for these dense DM objects. 2021 COSPAR

Source

Advances in Space Research, Vol-68, No. 4, pp. 2050-2056.

Date

2021-01-01

Publisher

Elsevier Ltd

Subject

Dark matter; DM planets; Early Universe

Coverage

Kiren O.V., Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, 560029, India; Arun K., Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, 560029, India, Christ Junior College, Bangalore, 560 029, India; Sivaram C., Indian Institute of Astrophysics, Bangalore, 560 034, India

Rights

All Open Access; Green Open Access

Relation

ISSN: 2731177; CODEN: ASRSD

Format

Online

Language

English

Type

Article

Identifier

https://doi.org/10.1016/j.asr.2021.04.016

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105337124&doi=10.1016%2fj.asr.2021.04.016&partnerID=40&md5=1b52e3e202d726827bd8085144a8945e