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Browsing by Subject "Primordial black holes"

Browsing by Subject "Primordial black holes"

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  • Extremal charged black holes, dark matter and dark energy 
    Sivaram, C; Arun, K; Prasad, A (Springer, 2018-10)
    Formation of black holes may be constrained by intrinsic parameters characterizing them such as electric charge. Here we discuss the effects of a relatively minute excess of charge on extremal black hole formation and the ...
  • Formation and Abundance of Late-forming Primordial Black Holes as Dark Matter 
    Chakraborty, Amlan; Chanda, Prolay K; Pandey, Kanhaiya L; Das, Subinoy (American Astronomical Society, 2022-06-20)
    We propose a novel mechanism where primordial black hole (PBH) dark matter is formed much later in the history of the universe, between the epochs of Big Bang nucleosynthesis and cosmic microwave background photon decoupling. ...
  • New Class of Dark Matter Objects and their Detection 
    Sivaram, C; Arun, K (Bentham Open, 2011-05)
    About one-fourth of the universe is thought to consist of dark matter. Yet there is no clear understanding about the nature of these particles. Commonly discussed dark matter candidates includes the so called WIMPs or ...
  • Primordial black holes as heat sources for living systems with longest possible lifetimes 
    Sivaram, C; Arun, K; Kiren, O. V (Springer, 2014-06)
    Just forty years ago, Hawking wrote his famous paper on primordial black holes (PBH). There have been since innumerable discussions on the consequences of the existence of such exotic objects and ramifications of their ...
  • Thermal Gravitational Waves from Primordial Black Holes 
    Sivaram, C; Arun, K (Bentham Open, 2011-08)
    Thermal gravitational waves can be generated in various sources such as, in the cores of stars, white dwarfs and neutron stars due to the fermion collisions in the dense degenerate Fermi gas [1-3]. Such high frequency ...

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