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International Journal of Theoretical Physics

, Volume 53, Issue 2, pp 370–379 | Cite as

A New Proposal for Galactic Dark Matter: Effect of f(T) Gravity

  • Farook Rahaman
  • Ritabrata Biswas
  • Hafiza Ismat Fatima
  • Nasarul Islam
Article

Abstract

It is still a challenging problem to the theoretical physicists to know the exact nature of the galactic dark matter which causes the galactic rotational velocity to be more or less a constant. We have proposed that the dark matter as an effect of f(T) gravity. Assuming the flat rotation curves as input we have shown that f(T) gravity can explain galactic dynamics. Here, we don’t have to introduce dark matter. Spacetime metric inspired by f(T) gravity describes the region up to which the tangential velocity of the test particle is constant. This inherent property appears to be enough to produce stable circular orbits as well as attractive gravity.

Keywords

Galactic dark matter f(T) gravity Rotational velocity 

Notes

Acknowledgements

R. Biswas thanks ISRO grant “ISRO/RES/2/367/10-11” for providing Research Associate Fellowship. F. Rahaman gratefully acknowledge support from IUCAA, Pune, India under Visiting Associateship under which a part of this work was carried out. F. Rahaman is also thankful to PURSE, DST and UGC, Govt. of India for providing financial support.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Farook Rahaman
    • 1
  • Ritabrata Biswas
    • 2
  • Hafiza Ismat Fatima
    • 3
  • Nasarul Islam
    • 4
  1. 1.Department of MathematicsJadavpur UniversityKolkataIndia
  2. 2.Department of PhysicsIIScBangaloreIndia
  3. 3.Department of MathematicsGovt. Degree college (W) WarburtonNankana SahibPakistan
  4. 4.Department of MathematicsDanga High MadrasahKolkataIndia

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