Browsing Department of Environmental Science by Title

Now showing items 1-7 of 7

    • Can Cosmic Strangelets Reach the Earth? 

      Banerjee, Shibaji; Ghosh, Sanjay Kumar; Raha, Sibaji; Syam, Debapriyo (The American Physical Society, 2000-08-14)
      he mechanism for the propagation of strangelets with low baryon number through the atmosphere of the Earth has been explored. It has been shown that, under suitable initial conditions, such strangelets may indeed reach ...

    • The Chandrasekhar limit for quark stars 

      Banerjee, Shibaji; Ghosh, Sanjay Kumar; Raha, Sibaji (IOP Publishing, 2000-01)
      The Chandrasekhar limit for quark stars is evaluated from simple energy balance relations, as proposed by Landau for white dwarfs or neutron stars. It has been found that the limit for quark stars depends on, in addition ...

    • Faculty Publication List : Dept. of Environmental Science, 2000-01 

      Bose Institute (Bose Institute, 2001)

    • Quark Nuggets as Baryonic Dark Matter 

      Alam, Jan-e; Raha, Sibaji; Sinha, Bikash (IOP Publishing, 1999-03-10)
      The cosmic first-order phase transition from quarks to hadrons, occurring a few microseconds after the big bang, would lead to the formation of quark nuggets which would be stable on a cosmological timescale if the associated ...

    • Relics of the cosmological QCD phase transition 

      Bhattacharyya, Abhijit; Alam, Jan-e; Sarkar, Sourav; Roy, Pradip; Sinha, Bikash; Raha, Sibaji; Bhattacharjee, Pijushpani (American Physical Society, 2000-03-16)
      The abundance and size distribution of quark nuggets (QN’s), formed a few microseconds after the big bang due to a first-order QCD phase transition in the early universe, has been estimated. It appears that stable QN’s ...

    • Strange Quark Matter in Cosmic Ray Flux and Exotic Events 

      Banerjee, Shibaji; Ghosh, Sanjay Kumar; Mazumdar, Amal; Raha, Sibaji; Syam, Debapriyo (Kluwer Academic Publishers, 2000-11-01)
      There have been several reports of exotic nuclear fragments, with highly unusual charge to mass ratio, in cosmic ray experiments. Although there exist experimental uncertainties which make them, at best, only candidate ...

    • ρ-mass modification in 3He: Signal of restoration of chiral symmetry or test for nuclear matter models? 

      Bhattacharyya, Abhijit; Ghosh, Sanjay Kumar; Raha, Sibaji (American Physical Society, 1999-06-16)
      Two recent experiments have demonstrated that the effective ρ-mass in nuclear medium, as extracted from the 3He(γ,π+π-) reaction, is substantially reduced. This has been advocated as an indication of partial restoration ...