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Browsing by Subject "Cosmic rays"

Browsing by Subject "Cosmic rays"

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  • Almahata Sitta meteorite: gamma -activity measurements at Monte dei Cappuccini Laboratory in Torino 
    Taricco, C; Bhandari, N; Colombetti, P; Romero, A; Vivaldo, G; Sinha, N; Jenniskens, P; Shaddad, M. H (Societa Astronomica Italiana, 2012)
    The asteroid 2008 TC3 was telescopically seen prior to entering Earth’s atmosphere and was predicted to fall in Sudan on October 7, 2008, as it actually happened. Subsequently, many fragments were collected from the Nubian ...
  • Cosmic Rays, X-Ray Astronomy and Be Stars: A Career of Research in Astronomy 
    Apparao, K. M. V (Astronomical Society of India, 1997)
    The autobiographical article presents discussions in the topics of particle physics and cosmic rays, He-3 isotopes, crab nebula, antiprotons, neutron stars, cyclotron lines, infrared bursts, gamma ray bursts, white holes ...
  • Forbush decreases in cosmic rays 
    Venkatesan, D; Ananth, A. G (Astronomical Society of India, 1991)
    The cosmic-ray time variation called Forbush decreases are examined in an overview of observational data with attention given to the three species of Forbush decreases. References are made to the satellite observations of ...
  • Historical aspects of gamma-ray astronomy 
    Sreekantan, B. V (Astronomical Society of India, 2002)
    Over the entire 20th century, Cosmic Rays proved to be the watershed of fundamental knowledge from which poured out several streams that made us familiar with aspects of the universe that could never have been known through ...
  • Monopole annihilation and highest energy cosmic rays 
    Bhattacharjee, P; Sigl, G (The American Physical Society, 1995-04)
    Cosmic rays with energies exceeding 1020 eV have been detected. The origin of these highest energy cosmic rays remains unknown. Established astrophysical acceleration mechanisms encounter severe difficulties in accelerating ...
  • Observations of sub-iron (Sc-Cr) to iron (Fe) abundance ratios in the low energy (30-300 MeV/N) galactic cosmic rays in Spacelab-3 experiment and their implications 
    Biswas, S; Durgaprasad, N; Singh, R. K; Vahia, M. N; Yadav, J. S; Dutta, A; Goswami, J. N (Astronomical Society of India, 1993)
    The Spacelab-3 cosmic ray experiment Anuradha was used to measure the sub-iron (Sc-Cr) to iron abundance ratios in the low energy galactic cosmic rays. Measurments made at four different depths of the detector yielded the ...
  • Origin of the highest energy cosmic rays 
    Bhattacharjee, P (Indian Academy of Sciences, 1996-10)
    After briefly recalling the history of discovery of cosmic rays, the present statns of the subject is discussed. Cosmic-ray particles with energy exceeding 1020 eV have been detected. The origin of cosmic rays remains ...
  • The study of cosmic ray intensity distribution near earth 
    Shrivastava, P. K; Shukla, R. P (Astronomical Society of India, 1993)
    The cosmic ray density distribution near earth is generally investigated by using the yearly excursion in the heliographic latitudinal position of earth. The study has been done for 1978 to 1990 to determine the density ...
  • Study of cosmic ray intensity variation during quiet interplanetary periods 
    Shrivastava, P. K; Shukla, R. P (Astronomical Society of India, 1996)
    Various solar controlled disturbances in interplanetary medium represented by solar flares, coronal holes, solar wind streams, generally produced significant decreases in cosmic ray intensity as well as enhancement in ...
  • TeV gamma-ray flux estimates from EGRET supernova remnant sources 
    Kaul, R. K (Astronomical Society of India, 2001)
    The EGRET experiment, onboard the Compton Gamma-Ray Observatory (CGRO) satellite, has provided evidence of possible ??100 MeV gamma-ray emission from ~ 22 supernova remnants through positional correlation alone. In view ...
  • Very high energy gamma-ray astronomy using atmospheric Cerenkov technique 
    Acharya, B. S (Astronomical Society of India, 1992)
    Research by Indian scientists in the field of very high energy gamma-ray astronomy using the Cerenkov technique is surveyed. A gamma-ray telescope set-up operating at Pachmarhi employing this technique is discussed

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