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  • 1
    Electronic Resource
    Electronic Resource
    Radio Emitting Electrons in the Galaxy and the Solar Modulation of Cosmic Rays (1968)
    [s.l.] : Nature Publishing Group
    Nature 217 (1968), S. 25-27 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The energy spectrum of electrons in interstellar space needed to explain the Galactic background radio emission has been derived. Information can then be deduced about the solar modulation of cosmic ray ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/217025a0
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  • 2
    Electronic Resource
    Electronic Resource
    Cosmic Ray Electron Spectrum above 200 GeV (1969)
    [s.l.] : Nature Publishing Group
    Nature 224 (1969), S. 1290-1291 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have explored the advantages of a pure nuclear emulsion stack in the study of high energy electrons2 by using a horizontal sandwich assembly consisting of an upper block of pure emulsion 1-8 cm thick followed by sixteen alternate layers of 600 µ?? thick emulsion pellicles and lead sheets ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2241290a0
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  • 3
    Electronic Resource
    Electronic Resource
    Magnetic pair production in Cygnus X-3 and a cut off in the γ -ray spectrum (1984)
    [s.l.] : Nature Publishing Group
    Nature 308 (1984), S. 828-830 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Cygnus X-3 system consists of a pulsar in close orbit around a companion star. The companion star undergoes mass loss through a dense stellar wind. Such an outflow of gas was invoked to explain the profile of the X-ray modulation5,6. Making use of the observed value of P/P and assuming that the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/308828a0
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  • 4
    Electronic Resource
    Electronic Resource
    Cosmic ray antiprotons and modified closed galaxy model (1981)
    [s.l.] : Nature Publishing Group
    Nature 289 (1981), S. 267-269 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The secondary p spectrum in cosmic rays has been calculated in the past by Gaisser and Maurer4, and Badhwar et al.5 using the extensive accelerator data available for the production of p. However, these calculated spectra differ by more than a factor of two at 10 GeV and by even larger factors at ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/289267a0
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  • 5
    Electronic Resource
    Electronic Resource
    Relative abundance of antiprotons and antihelium in the primary cosmic radiation (1978)
    [s.l.] : Nature Publishing Group
    Nature 274 (1978), S. 137-139 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have previously reported on the p/p in the 4.2-12.5 GeV/c range from an earlier (September 1975) balloon flight3. The present instrument, shown in Fig. 1, differs from the previous experiment in one important respect. In the present flight there were three additional position measuring multiwire ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/274137b0
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  • 6
    Electronic Resource
    Electronic Resource
    Cosmic-ray electrons and galactic radio emission—a conflict? (1977)
    [s.l.] : Nature Publishing Group
    Nature 265 (1977), S. 424-426 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We will refer first to the spectral shape of the cosmic-ray electrons expected from radio observations. It is found from the latest compilation of the radio intensity, I(v), by A. S. Webster (personal communication) between 10 and 8,000 MHz in the direction of the anticentre, that the spectrum ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/265424a0
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  • 7
    Electronic Resource
    Electronic Resource
    Energy Spectrum of Primary Cosmic-Rays (1966)
    [s.l.] : Nature Publishing Group
    Nature 209 (1966), S. 567-569 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DURING the past decade or so, several measurements have been made of the flux of the cosmic-ray particles in the wide range of energy from 109 to 1020 eV. These were based at the lower energy end on the flux of nuclei observed at different geomagnetic latitudes and at energies greater than 1015 eV ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/209567a0
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  • 8
    Electronic Resource
    Electronic Resource
    The energy spectrum of cosmic ray electrons between 10 and 1000 GeV (1975)
    Springer
    Astrophysics and space science 36 (1975), S. 169-175 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Measurements made by the Bombay Group on the fluxes of cosmic ray electrons in the energy range 10–1000 GeV have been compared with those of other workers in the same energy domain with a view to understand the present confused situation on the existing observations at these high energies. Such an analysis clearly brings out the current situation in its true perspective and highlights the care and emphasis to be placed on future experimentation in this important field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00681949
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  • 9
    Electronic Resource
    Electronic Resource
    Production spectrum of gamma rays in interstellar space through neutral pion decay (1981)
    Springer
    Astrophysics and space science 76 (1981), S. 213-233 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have obtained a simple representation to the observed invariant cross-section for the production of neutral pions in proton-proton collisions. Making use of this representation, we have calculated the differential and integral production spectra of gamma rays in the Galaxy from interactions of cosmic ray nuclei with interstellar gas. It is shown that the uncertainties in deducing interstellar proton spectrum by demodulating the observed spectrum do not affect very much the gamma ray spectrum. We have also determined the gamma ray production spectrum through bremsstrahlung process for a typical interstellar electron spectrum derived from the radio spectrum in the Galaxy. From these, the total gamma ray production spectrum resulting from the interaction of cosmic rays with interstellar matter is compared with the observed gamma ray spectrum in the Galaxy and some inferences have been obtained. We also point out the possible uncertainty in the present calculation and suggest the improvements needed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00651256
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  • 10
    Electronic Resource
    Electronic Resource
    Origin of low energy cosmic ray positrons at energies ≳2 MeV (1970)
    Springer
    Astrophysics and space science 8 (1970), S. 20-28 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown that an appreciable flux of positrons below ∼a few MeV in the cosmic radiation could arise from the decay of cobalt nuclei in the decay chain56Ni→56Co→56Fe, which occurs in the silicon burning shells of supernovae just after their ejection at relativistic velocities. The equilibrium spectrum of positrons in the interstellar space has been calculated on the assumption that the observed abundance of iron nuclei in the cosmic radiation is the result of the above process. It is found that the observation below about 10 MeV can be well explained with a moderate acceleration of the positrons in the expanding envelope of supernovae prior to their propagation in the interstellar space. The total56Ni content in the shells of supernova necessary to account for the observed positrons is in agreement with that required to explain the peak luminosity during the supernova outburst. Since this model deals with positrons created at the time of injection of cosmic rays into the interstellar space, it becomes possible to study the shape of the injection spectrum of cosmic rays.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00651651
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