White dwarfs in an ungravity-inspired model

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Bertolami, O (Author) FCUP; Mariji, H (Author) Other

Journal

Title: Physical Review D: Particles and fields

Vol. 93

ISSN: 0556-2821

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 15 Citations

Scopus - 15 Citations

Other information

Authenticus ID: P-00K-HD4

DOI: 10.1103/physrevd.93.104046

Abstract (EN): An ungravity-inspired model is employed to examine the astrophysical parameters of white dwarf stars (WDs) using polytropic and degenerate gas approaches. Based on the observed properties such as mass, radius, and luminosity of selected WDs, namely, Sirius B and epsilon Reticulum, bounds on the characteristic length and scaling dimension of the ungravity (UG) model are estimated. The UG effect on the Chandrasekhar limit for WDs is shown. The UG model is examined in the study of ultramassive WDs, e.g., EUVE J1746-706. The UG-inspired model implies that a new location for some WDs on the Hertzsprung-Russell diagram is found.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8