Last edited by Mebei
Sunday, July 26, 2020 | History

3 edition of Photodisintegration of ultrahigh energy cosmic rays found in the catalog.

Photodisintegration of ultrahigh energy cosmic rays

Floyd W. Stecker

Photodisintegration of ultrahigh energy cosmic rays

a new determination

by Floyd W. Stecker

  • 297 Want to read
  • 8 Currently reading

Published by National Aeronautics and Space Administration, Goddard Space Flight Center, National Technical Information Service, distributor in Greenbelt, Md, [Springfield, Va .
Written in English

    Subjects:
  • Background radiation.,
  • Cosmic rays.,
  • Gamma rays.,
  • Infrared radiation.,
  • Energy dissipation.

  • Edition Notes

    StatementF.W. Stecker.
    SeriesNASA technical memorandum -- 208609.
    ContributionsGoddard Space Flight Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15546589M

    Photodisintegration of ultrahigh energy cosmic rays: a new determination (OCoLC) Online version: Stecker, Floyd W. (Floyd William), Photodisintegration of ultrahigh energy cosmic rays: a new determination (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors. We present a new estimate of the photodisintegration of ultrahigh energy cosmic-ray (UHCR) nuclei in intergalactic space. Critical interactions for energy loss and photodisintegration of UHCR nuclei occur with the infrared background radiation (IBR). We have made use of a new determination of the IBR based on IR data and on TeV γ-ray observations. Our results indicate that a EeV nucleus.

    This revised edition provides an up-to-date summary of the field of ultra-high energy cosmic rays, dealing with their origin, propagation, and composition,. The authors reflect the enormous strides made since the first edition in the realm of experimental work, in particular the use of vastly improv. Photodisintegration of ultrahigh-energy cosmic rays: A New determination - Stecker, F.W. et al. Astrophys.J. () astro-ph/ From 3K to 10**eV - Anchordoqui, Luis Alfredo astro-ph/ The Toes of the ultrahigh-energy cosmic ray spectrum - Harari, Diego et al. JHEP () astro-ph/ Nature,,

    Motivated by Pierre Auger Observatory results favoring a heavy nuclear composition for ultrahigh-energy (UHE) cosmic rays, we investigate implications for the cumulative neutrino background. The requirement that nuclei not be photodisintegrated constrains their interactions in sources, therefore limiting neutrino production via photomeson. Ultrahigh-Energy Cosmic Rays: Physics and Astrophysics at Extreme Energies Gu‹nter Sigl The origin of cosmic rays is one of the major unresolved questions in astrophysics. In particular, the highest energy cosmic rays observed have macroscopic energies up .


Share this book
You might also like
Shaksperian sketches.

Shaksperian sketches.

Library and information services for the legal profession

Library and information services for the legal profession

Irish coleoptera

Irish coleoptera

Status of vascular surgery in Europe

Status of vascular surgery in Europe

Sunday Times Magazine.

Sunday Times Magazine.

The rule and measure of Christian charity

The rule and measure of Christian charity

Grant claims

Grant claims

Science in Africa.

Science in Africa.

Hebrides.

Hebrides.

Union list of periodicals held in the libraries of Scottish colleges of education.

Union list of periodicals held in the libraries of Scottish colleges of education.

Brazil, the first eight years

Brazil, the first eight years

Devil world

Devil world

Compensation 99

Compensation 99

Photodisintegration of ultrahigh energy cosmic rays by Floyd W. Stecker Download PDF EPUB FB2

We present the results of a new calculation of the photodisintegration of ultrahigh energy cosmic-ray (UHCR) nuclei in intergalactic space. The critical interactions for energy loss and photodisintegration of UHCR nuclei occur with photons of the K cosmic background radiation (CBR) and with photons of the infrared background radiation (IBR).Cited by:   Photodisintegration of Ultrahigh Energy Cosmic Rays: A New Determination [Nasa Technical Reports Server (Ntrs)] on *FREE* shipping on qualifying offers.

Photodisintegration of Ultrahigh Energy Cosmic Rays: A New DeterminationFormat: Paperback. Photodisintegration by the universal radiation is unimportant on time scales of 10 10 yr or less for helium nuclei below 10 10 GeV and for iron nuclei below 10 GeV total energy.

Photodisintegration by dilute starlight photons in intergalactic space is unimportant on time scales of 10 10 yr or less at all energies. Abstract: We present the results of a new calculation of the photodisintegration of ultrahigh energy cosmic ray (UHCR) nuclei in intergalactic space.

The critical interactions for energy loss and photodisintegration of UHCR nuclei occur with photons of the K cosmic background radiation (CBR) and with photons of the infrared background radiation (IBR).Cited by: The impact on the photodisintegration of ultra-high-energy cosmic rays (UHECR) is illustrated for a Fe source with typical energies of 10 20 –10 21 eV.

At energies around 10 20 eV, the new cross sections are found to modify the UHECR photodisintegration by:   Photodisintegration of Ultrahigh-Energy Cosmic Rays by the Universal Radiation Field Article (PDF Available) in Physical Review (5) Author: Floyd Stecker.

We present the results of a new calculation of the photodisintegration of ultrahigh energy cosmic-ray (UHCR) nuclei in intergalactic space. The critical interactions for energy loss and photodisintegration of UHCR nuclei occur with photons of the K cosmic background radiation (CBR) and with photons of the infrared background radiation (IBR).

We present the results of a new calculation of the photodisintegration of ultra-high-energy cosmic-ray (UHCR) nuclei in intergalactic space. The critical interactions for energy loss and photodisintegration of UHCR nuclei occur with photons of the K cosmic background radiation (CBR) and with photons of the IR background radiation (IBR).

The result of a series of lectures prepared for graduate students and postdoctoral researchers, this book is a general introduction to experimental techniques and results in the field of ultrahigh energy cosmic rays. It succinctly summarizes the rapidly developing field, and provides modern results that include data from newer detectors.

Photodisintegration of Ultrahigh Energy Cosmic Rays: A New Determination 0 q 0 0 I F. Stecker Laboratory for High Energy Astrophysics, CodeNASA/Goddard Space Flight Center, Greenbelt, MD.

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): We present the results of a new calculation of the photodisintegration of ultrahigh energy cosmic-ray (UHCR) nuclei in intergalactic space. The critical interactions for energy loss and photodisintegration of UHCR nuclei occur with photons of the K cosmic background radiation (CBR) and with photons of the.

It is generally admitted that ultrahigh energy cosmic rays originate in extragalactic sources, mainly because light nuclei above 10 18 − 10 19 eV cannot be confined in the Galactic magnetic field and because the arrival directions of ultrahigh energy cosmic rays are essentially isotropic.

We present the results of a new calculation of the photodisintegration of ultrahigh energy cosmic ray (UHCR) nuclei in intergalactic space.

The critical interactions for energy loss and photodisintegration of UHCR nuclei occur with photons of the K cosmic background radiation (CBR) and with photons of the infrared background radiation (IBR).Author: F.

Stecker and M. Salamon. In this review we discuss the important progress made in recent years towards understanding the experimental data on cosmic rays with energies ≳ 10 19 eV.

We begin with a brief survey of the available data, including a description of the energy spectrum, mass composition, and arrival directions. The authors define ``ultrahigh-energy cosmic rays'' (UHECRs) as those cosmic rays with energies above eV. It had been anticipated that there would be a cutoff in the energy spectrum of.

The origin of cosmic rays is one of the major unresolved questions in astrophysics. In particular, the highest energy cosmic rays observed have macroscopic energies up to several electron volts and thus provide a probe of physics and astrophysics at energies unattained in laboratory experiments.

Theoretical explanations range from astrophysical acceleration of charged particles, to. We begin by considering the intergalactic propagation of ultra-high energy (UHE) protons (Section 2). In Sections 3 Photodisintegration of ultra-high energy nuclei, 4 The cosmic infrared background, 5 Propagation of ultra-high energy nuclei, we study the photodisintegration of cosmic ray nuclei, including the effect of uncertainties in the cross-sections and the CIB model used.

The result of a series of lectures prepared for graduate students and postdoctoral researchers, this book is a general introduction to experimental techniques and results in the field of ultrahigh energy cosmic rays.

It succinctly summarizes the rapidly developing field, and provides modern results that include data from newer detectors. Cosmic ray physics has recently attracted a great deal of attention from the high energy physics community because of the discovery of new sources and the advent of new techniques.

The result of a series of lectures prepared for graduate students and postdoctoral researchers, this book is a general introduction to experimental techniques and. helium photodisintegration and nucleosynthesis: implications for topological defects, high energy cosmic rays, and massive black holes Item Preview remove-circle.

After more than fty years of experimental e orts, the origin of ultrahigh energy cosmic-rays (UHECRs, e.g, cosmic-rays above ˘ eV) remains a mystery. The understanding of the production of these particles, the most energetic particles in the universe, is one of the most intense research elds of high energy astrophysics.We have studied whether high energy nuclei can survive photodisintegration by the (known or estimated) photon fields in suggested extragalactic sources of cosmic rays the answer is no for GRBs, yes for starburst galaxies, and in between (energy-dependent) for AGNS Hence the effect on the expected WB flux depends on what the actual sources.Photodisintegration of ultrahigh energy cosmic rays: a new determination (OCoLC) Microfiche version: Stecker, Floyd W.

(Floyd William), Photodisintegration of ultrahigh energy cosmic rays (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource: Document Type.