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Monday, July 20, 2020 | History

2 edition of An X-ray pulsar with a superstrong magnetic field in the soft gamma-ray repeater SGR1806-20 found in the catalog.

An X-ray pulsar with a superstrong magnetic field in the soft gamma-ray repeater SGR1806-20

An X-ray pulsar with a superstrong magnetic field in the soft gamma-ray repeater SGR1806-20

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Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Gamma rays.,
  • Pulsars.,
  • X rays.,
  • Magnetic fields.,
  • Supernova remnants.,
  • Magnetic dipoles.,
  • Repeaters.

  • Edition Notes

    Other titlesX ray pulsar with a superstrong magnetic field in the soft gamma-ray repeater SGR1806-20
    StatementC. Kouveliotou ... [et al.].
    Series[NASA technical memorandum] -- NASA/TM 1998-208282, NASA technical memorandum -- 208282..
    ContributionsKouveliotou, Chryssa., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17137429M


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An X-ray pulsar with a superstrong magnetic field in the soft gamma-ray repeater SGR1806-20 Download PDF EPUB FB2

Get this from a library. An X-ray pulsar with a superstrong magnetic field in the soft gamma-ray repeater SGR [Chryssa Kouveliotou; United States. National Aeronautics and Space Administration.;].

INSPIRE, the High Energy Physics information system. Please direct questions, comments or concerns to [email protected] by: Buy An X-ray pulsar with a superstrong magnetic field in the soft gamma-ray repeater SGR (SuDoc NAS ) by NASA (ISBN:) from Amazon's Book Store.

Everyday low prices and free delivery on eligible : NASA. The Physics of Soft Gamma Repeaters. An X-ray pulsar with a superstrong magnetic field in the soft g-ray repeater SGR 2 20 We present RXTE observations of the soft gamma--ray repeater.

Two classes of X-ray pulsars, the anomalous X-ray pulsars and the soft gamma-ray repeaters, have been recognized in the last decade as the most promising candidates for being magnetars: isolated neutron stars powered by magnetic energy.

I review the observational properties of these objects, focussing on the most recent results, and their interpretation in the Cited by:   a) Describe the radiation emitted by the pulsar, and find the total radiated power, assuming that the angle between the magnetic moment and the rotation axis is \(\alpha \), as in Fig.

b) Find the “spindown rate” (decay constant of the rotation) of the pulsar, assuming that energy loss is due to radiation only. c) Explain how, from the knowledge of mass, radius, Author: Andrea Macchi, Giovanni Moruzzi, Francesco Pegoraro.

An X-ray pulsar with a superstrong magnetic field in the soft γ-ray repeater SGR - 20 Bildsten et al. Becker & Truemper: Observations of Accreting Pulsars The X-ray luminosity of rotation-powered neutron stars Thompson & Duncan Romani: The Soft Gamma Repeaters as Very Strongly Magnetized Neutron Stars.

Request PDF | Unveiling soft gamma-ray repeaters with INTEGRAL | Thanks to INTEGRAL’s long exposures of the Galactic Plane, the two brightest Soft Gamma-Ray Repeaters, SGR and SGR Soft gamma-ray repeaters (SGRs) are a rare class of astronomical object that are associated with young neutron stars born in supernova explosions.

An X-ray pulsar with a. Very recently, Kulkarni et al.8,9 have suggested that a compact radio source in G – corresponds to a young pulsar at the centre of this nebula, and can be identified with SGR – However, later on, some astrophysical objects, namely soft gamma repeaters (SGRs) and anomalous X-ray pulsars (AXPs), were observed [4,5,6,7,8,9,10].They are believed to be neutron stars having very strong surface magnetic fields of the order of 10 14 – 10 15 G.

Since their discovery, the source of energy was somewhat a by: 1. Formation of neutron stars. In a lifetime of 10 –10 years, a massive star reaches an endpoint of its evolution, where it makes a core-collapse supernova explosion.

In this dramatic event with a huge energy release (∼10 46 J), an inner part (“core”) of the star collapses by its own gravity towards the center, leading to the formation of an NS if the initial Cited by: 4.

de SGR anno mirabile: 20 minutes. Watts. High frequency oscillations during magnetar flares: evidence for neutron star vibrations: 20 minutes. Tiengo. Long term spectral variability in the Soft Gamma-ray Repeater SGR + 20 minutes. Woods (for E.

Gogus) RXTE Observations of SGR Bursts: 20 minutes. Furthermore, the recently reported X-ray period and period derivative for the Soft Gamma-ray Repeater (SGR) source SGR suggest a surface field around $10^{15}$ Gauss.

None of these high-field pulsars have yet been detected as radio pulsars. The discovery of Gamma Ray Bursts •. Vela 4,5,6 satellites: look for X and gamma rays in order to monitor compliance with the Geneva Limited Nuclear Test Ban Treaty of (no nuclear tests in space and atmosphere) •. Discovered intense flashes of Gamma-rays of cosmic origin: GAMMA RAY BURSTS (GRBs).

The emission from accreting black holes and neutron stars, as well as from the highly magnetized neutron stars called magnetars, is dominated by X-rays. For this reason, spectral and timing studies in the X-rays have been extremely successful in broadening our understanding of compact objects in the past few decades.

Soon, a new observational window will open on compact objects: X Author: Ilaria Caiazzo. Do gamma-ray burst sources repeat. NASA Technical Reports Server (NTRS) Meegan, C. A.; Hartmann, D. H.; Brainerd, J. J.; Briggs, M.; Paciesas, W. S.; Pendleton, G.

Hydrogen molecules and chains in a superstrong magnetic field. NASA Technical Reports Server (NTRS) Lai, Dong; Salpeter, Edwin E. The magnetar Swift J was discovered in March when Swift revealed a 9 ms hard X-ray burst and long-lived outburst.

Prompt X-ray observations revealed a spin period. Nature Title Subject Authors; uses for a dead bird: Natural history museums face an unprecedented opportunity as central players in biodiversity research.

Zoology and w. For active galactic nuclei (AGN), the X-ray spectrum associated with the central regions of an accretion disk (r 10 rg) can, generally, be represented as a sum of two components: a hard power-law component (up to keV) and a soft component in the continuum and emission lines (largely, in the reflected iron line keV).

Therefore, it is.The astronomers from Arizona State University and the University of Alabama called the discovery "the first page in an otherwise blank book." NASA named astronaut Michael Lopez-Alegria to replace astronaut Wendy B. Lawrence as NASA's Director of Operations at Gagarin Cosmonaut Training Center in Star City, Russia.M.

Nagano and A. A. Watson- Observations and implications of the ultrahigh-energy cosmic rays - Free download as PDF File .pdf), Text File .txt) or read online for free.