[en] In this article, we study the neutron stars with antikaon condensates and their radial oscillations. We incorporate the antikaons (K-, K¯) within a relativistic mean field theory with density dependent couplings. A transition to the kaon condensed phase is treated as a second order phase transition for different possible antikaon optical potentials. Then, we solve the structure equations of stars and calculate the fundamental and higher order frequencies of their radial pulsations. We study the eigenfunctions of different radial modes for a 2 M⊙ star with equations of state having different potential depths of antikaons. We also study the large frequency separations for the 2 M⊙ star. We find distinct features of the appearances of antikaons on the eigenfunctions. The shape of the eigenfunctions corresponding to the radial perturbations is affected due to the appearance of the antikaons, but for the pressure perturbation, the shape remains unchanged.
Disciplines :
Physics
Author, co-author :
Kheto, Apurba; Government General Degree College, Hooghly, India
Char, Prasanta ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Interactions fondamentales en physique et astrophysique (IFPA)
Language :
English
Title :
Radial oscillations of neutron stars with antikaon condensate
Publication date :
September 2023
Journal title :
European Physical Journal. A, Hadrons and Nuclei
ISSN :
1434-6001
eISSN :
1434-601X
Publisher :
Springer Science and Business Media Deutschland GmbH
We thank the reviewers for their useful comments that helped us improving the manuscript. We also thank Professor D. Bandyopadhyay for many useful discussions. P. Char is currently supported by the Fonds de la Recherche Scientifique-FNRS, Belgium, under grant No. 4.4501.19.
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
N.K. Glendenning, Compact stars: Nuclear physics, particle physics, and general relativity (New York, USA: Springer, 390 p, 1997)
J. Antoniadis et al., Science 340, 6131 (2013). arXiv:1304.6875
Z. Arzoumanian et al., (NANOGrav), Astrophys. J. Suppl. 235, 37 (2018). arXiv:1801.01837
E. Fonseca et al., Astrophys. J. Lett. 915, L12 (2021). arXiv:2104.00880
B.P. Abbott et al., (LIGO Scientific, Virgo), Phys. Rev. Lett. 119, 161101 (2017). arXiv:1710.05832
B.P. Abbott et al., (LIGO Scientific, Virgo), Phys. Rev. X 9, 011001 (2019). arXiv:1805.11579
B.P. Abbott et al., (LIGO Scientific, Virgo), Phys. Rev. Lett. 121, 161101 (2018). arXiv:1805.11581
T.E. Riley et al., Astrophys. J. Lett. 887, L21 (2019). arXiv:1912.05702
M.C. Miller et al., Astrophys. J. Lett. 887, L24 (2019). arXiv:1912.05705
T.E. Riley et al., Astrophys. J. Lett. 918, L27 (2021). arXiv:2105.06980
M.C. Miller et al., Astrophys. J. Lett. 918, L28 (2021). arXiv:2105.06979
A. Passamonti, M. Bruni, L. Gualtieri, A. Nagar, C.F. Sopuerta, Phys. Rev. D 73, 084010 (2006). arXiv:gr-qc/0601001
A. Passamonti, N. Stergioulas, A. Nagar, Phys. Rev. D 75, 084038 (2007). arXiv:gr-qc/0702099
V. Sagun, G. Panotopoulos, I. Lopes, Phys. Rev. D 101, 063025 (2020). arXiv:2002.12209
T.T. Sun, Z.Y. Zheng, H. Chen, G.F. Burgio, H.J. Schulze, Phys. Rev. D 103, 103003 (2021). arXiv:2101.07515
V. Boriakoff, Astrophys. J. Lett. 208, L43 (1976)
C. Chirenti, M.C. Miller, T. Strohmayer, J. Camp, Astrophys. J. Lett. 884, L16 (2019). arXiv:1906.09647
S. Chandrasekhar, Astrophys. J. 140, 417 (1964). (Erratum: Astrophys.J. 140, 1342 (1964))
S. Chandrasekhar, Phys. Rev. Lett. 12, 114 (1964)
G. Chanmugam, Astrophys. J. 217, 799 (1977)
E.N. Glass, L. Lindblom, Astrophys. J. Suppl. 53, 93 (1983)
H.M. Vaeth, G. Chanmugam, Astron. Astrophys. 260, 250 (1992)
D. Gondek, P. Haensel, J.L. Zdunik, Astron. Astrophys. 325, 217 (1997). arXiv:astro-ph/9705157
S. Sen, S. Kumar, A. Kunjipurayil, P. Routaray, S. Ghosh, P.J. Kalita, T. Zhao, B. Kumar, Galaxies 11, 60 (2023). arXiv:2205.02076
I.A. Rather, K.D. Marquez, G. Panotopoulos, I. Lopes, arXiv:2303.11006 (2023)
J. Schaffner, I.N. Mishustin, Phys. Rev. C 53, 1416 (1996). arXiv:nucl-th/9506011
N.K. Glendenning, J. Schaffner-Bielich, Phys. Rev. C 60, 025803 (1999). arXiv:astro-ph/9810290
J. Schaffner-Bielich, V. Koch, M. Effenberger, Nucl. Phys. A 669, 153 (2000). arXiv:nucl-th/9907095
D.B. Kaplan, A.E. Nelson, Phys. Lett. B 175, 57 (1986)
S. Pal, D. Bandyopadhyay, W. Greiner, Nucl. Phys. A 674, 553 (2000). arXiv:astro-ph/0001039
J.A. Pons, S. Reddy, P.J. Ellis, M. Prakash, J.M. Lattimer, Phys. Rev. C 62, 035803 (2000). arXiv:nucl-th/0003008
J.A. Pons, J.A. Miralles, M. Prakash, J.M. Lattimer, Astrophys. J. 553, 382 (2001). arXiv:astro-ph/0008389
S. Banik, D. Bandyopadhyay, Phys. Rev. C 63, 035802 (2001). arXiv:astro-ph/0009113
S. Banik, D. Bandyopadhyay, Phys. Rev. C 64, 055805 (2001). arXiv:astro-ph/0106406
S. Banik, D. Bandyopadhyay, Phys. Rev. C 66, 065801 (2002). arXiv:astro-ph/0205532
S. Banik, Phys. Rev. C 89, 035807 (2014). arXiv:1401.0369
N. Gupta, P. Arumugam, Phys. Rev. C 87, 045802 (2013)
P. Char, S. Banik, Phys. Rev. C 90, 015801 (2014). arXiv:1406.4961
N.D. Batra, K.P. Nunna, S. Banik, Phys. Rev. C 98, 035801 (2018). arXiv:1705.06435
V.B. Thapa, M. Sinha, Phys. Rev. D 102, 123007 (2020). arXiv:2011.06440
D. Kundu, V.B. Thapa, M. Sinha, arXiv:2210.14565 (2022)
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.
