Study of galactic rotation curves in wormhole spacetime

2016 ◽  
Vol 361 (3) ◽  
Author(s):  
Farook Rahaman ◽  
Banashree Sen ◽  
Koushik Chakraborty ◽  
G. C. Shit
Keyword(s):  
Galactic Rotation ◽  
Rotation Curves ◽  
Galactic Rotation Curves

scholarly journals Galactic rotation curves inspired by a noncommutative-geometry background

2011 ◽  
Vol 44 (4) ◽  
pp. 905-916 ◽  
Author(s):  
F. Rahaman ◽  
Peter K. F. Kuhfittig ◽  
K. Chakraborty ◽  
A. A. Usmani ◽  
Saibal Ray
Keyword(s):  
Noncommutative Geometry ◽  
Galactic Rotation ◽  
Rotation Curves ◽  
Galactic Rotation Curves

scholarly journals Possible formation of wormholes from dark matter in an isothermal galactic halo and void

2019 ◽  
Vol 34 (23) ◽  
pp. 1950188
Author(s):  
Nayan Sarkar ◽  
Susmita Sarkar ◽  
Farook Rahaman ◽  
P. K. F. Kuhfittig ◽  
G. S. Khadekar
Keyword(s):  
Dark Matter ◽  
Galactic Halo ◽  
Energy Condition ◽  
Null Energy Condition ◽  
Galactic Rotation ◽  
Einstein Field Equations ◽  
Field Equations ◽  
Rotation Curves ◽  
Galactic Rotation Curves ◽  
Traversable Wormholes

It is well-known that traversable wormholes are valid solutions of the Einstein field equations, but these structures can only be maintained by violating the null energy condition. In this paper, we have obtained such wormhole solutions in an isothermal galactic halo, as well as in a void. We have shown that the null energy condition is violated, with the help of a suitable redshift function obtained from flat galactic rotation curves.

scholarly journals Galactic rotation curves in brane world models

2011 ◽  
Vol 415 (4) ◽  
pp. 3275-3290 ◽  
Author(s):  
L. Á. Gergely ◽  
T. Harko ◽  
M. Dwornik ◽  
G. Kupi ◽  
Z. Keresztes
Keyword(s):  
Brane World ◽  
Galactic Rotation ◽  
Rotation Curves ◽  
Galactic Rotation Curves
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