Now showing items 1-7 of 7

    • Ablation and chemical alteration of cosmic dust particles during entry into the earth`s atmosphere 

      Rudraswami, N.G.; ShyamPrasad, M.; Dey, S.; Plane, J.M.C.; Feng, W.; Carrillo-Sanchez, J.D.; Fernandes, D. (American Astronomical Society, 2016)
      Most dust-sized cosmic particles undergo ablation and chemical alteration during atmospheric entry, which alters their original properties. A comprehensive understanding of this process is essential in order to decipher ...
    • Evaluating changes in the elemental composition of micrometeorites during entry into the earth`s atmosphere 

      Rudraswami, N.G.; ShyamPrasad, M.; Dey, S.; Plane, J.M.C.; Feng, W.; Taylor, S. (The American Astronomical Society, 2015)
      We evaluate the heating of extraterrestrial particles entering the atmosphere using the comprehensive chemical ablation model (CABMOD). This model predicts the ablation rates of individual elements in a particle with a ...
    • Fractionation and fragmentation of glass cosmic spherules during atmospheric entry 

      Rudraswami, N.G.; ShyamPrasad, M.; Babu, E.V.S.S.K.; VijayaKumar, T.; Feng, W.; Plane, J.M.C. (Elsevier, 2012)
      Glass cosmic spherules are a sub-type of S-type cosmic spherules that are almost at the end phase of fractionation and volatilization during atmospheric entry. A focused investigation of 36 glass spherules out of several ...
    • Oxygen Ablation during Atmospheric Entry: Its Influence on the Isotopic Composition of Micrometeorites 

      Rudraswami, N.G.; Pandey, M.; Fernandes, D.; Carrillo-Sanchez, J.D.; Feng, W.; Plane, J.M.C.; Singh, Vijay (IOP Publishing, 2022)
      Micrometeorites (MMs) offer glimpses of the diverse nature of parent bodies that accreted during the first few million years after the formation of the proto-Sun.The present work explores this by evaluating the ablation ...
    • Refractory metal nuggets in different types of cosmic spherules. 

      Rudraswami, N.G.; ShyamPrasad, M.; Plane, J.M.C.; Berg, T.; Feng, W.; Balgar, S. (Elsevier, 2014)
      Out of the three basic cosmic spherule types collected from the seafloor, RMNs (refractory metal nuggets) have been reported from I-type spherules commonly, rarely from S-type spherules and never from the G-type spherules. ...
    • Relict olivines in micrometeorites: Precursors and interactions in the earth`s atmosphere 

      Rudraswami, N.G.; ShyamPrasad, M.; Dey, S.; Fernandes, D.; Plane, J.M.C.; Feng, W.; Taylor, S.; Carrillo-Sanchez, J.D. (American Astronomical Society, 2016)
      Antarctica micrometeorites (~1200) and cosmic spherules (~5000) from deep sea sediments are studied using electron microscopy to identify Mg-rich olivine grains in order to determine the nature of the particle precursors. ...
    • Selective Disparity of Ordinary Chondritic Precursors in Micrometeorite Flux 

      Rudraswami, N.G.; Fernandes, D.; Naik, A.K.; ShyamPrasad, M.; Carrillo-Sánchez, J.D.; Plane, J.M.C.; Feng, W.; Taylor, S. (IOP Publishing, 2018)
      All known extraterrestrial dust (micrometeoroids) entering the Earth's atmosphere is anticipated to have a significant contribution from ordinary chondritic precursors, as seen in meteorites, but this is an apparent ...