Magnetar SGR 1900+14

Image
Minimum credit line: Image courtesy of NRAO/AUI (for details, see Image Use Policy).

About this Image

Astronomers using the VLA have found evidence for the most powerful magnetic field ever seen in the universe by observing an "afterglow" of subatomic particles ejected from a magnetar -- a neutron star with a magnetic field billions of times stronger than anything that can be created on Earth. Magnetars were proposed in 1992 as a theoretical explanation for objects that repeatedly emit bursts of gamma-rays called "soft gamma-ray repeaters," or SGRs. This emission comes from the interaction of subatomic particles with the magnetar's powerful magnetic field. These VLA images show the SGR called 1900+14 (also known as GRB 980829), with its short-lived radio emission turned off, left, and on, right. The circles indicate the area from within which the X-ray emission of SGR 1900+14 comes.

Investigator(s):  Dale Frail, Shri Kulkarni, and Josh Bloom

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Technical Data

    Telescope VLA 
    Date of Observation 1998-09-03 
    Type of Observation Continuum Observations 
    Center of Image RA: 19:07:14.10, Dec: 09:19:19.00 (J2000)  
    Field of View 0.0069 x 0.0069 degrees  
    Technical Caption  

  • Astronomical database entries for GRB 980829
    • Query SIMBAD for more GRB 980829 data

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