Does dark matter admixed pulsar exist?
Department of Physics, New Alipore College, L Block, New Alipore, Kolkata, 700053, India
2 Department of Physics, Aliah University, IIA/27, Action Area II, Newtown, Kolkata, 700156, India
* e-mail: email@example.com
Accepted: 24 March 2020
Published online: 16 April 2020
In this paper, we have considered a two-fluid model assuming that the pulsars are made of ordinary matter admixed with dark matter. Contribution of dark matter comes from the fitting of the rotation curves of the SPARC sample of galaxies (de León in Gen Relativ Gravit 25:1123, 1993). For this, we have investigated the dark matter based on the singular isothermal sphere (SIS) dark matter density profile in the galactic halo region. Considering this two-fluid model, we have studied the physical features of the pulsars present in different galaxy in details. Here, we compute the probable radii, compactness (u) and surface red-shift () of the four pulsars namely : PSR J1748-2021B in NGC 6440B galaxy, PSR J1911-5958A in NGC 6752 galaxy, PSR B1802-07 in NGC 6539 galaxy and PSR J1750-37A in NGC 6441 galaxy.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2020