magnetars

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magnetars

(mag -nĕ-tarz) Highly magnetized neutron stars, thought to be responsible for soft gamma repeaters (SGRs) and anomalous X-ray pulsars (AXPs). A surface magnetic field of up to 1011 tesla (several hundred times that of a radio pulsar) rapidly slows the star's rotation, causing starquakes that deposit enough energy into the surrounding gases to generate bursts of soft gamma radiation. The field also heats the rotating surface sufficiently for it to emit X-rays, but the rotation is usually too slow for the neutron star to act as a radio pulsar. A large fraction of all neutron stars may be magnetars.
References in periodicals archive ?
Magnetars are a type of neutron star, the dead cores of massive stars that have collapsed in on themselves after burning up all their fuel and exploding as dramatic supernovas.
"Magnetar flares constitute at least a substantial fraction of observed short-duration bursts," he asserts.
That is why the discovery of a wind nebula - which is created around a pulsar when its fast rotation and strong magnetic field interact to accelerate electrons and other particles to very high energies - around a magnetar assumes special importance.  The discovery may provide scientists the much-needed clues to the birth, evolution and properties of magnetars, which, unlike pulsars, are capable of generating only brief bursts of accelerated particles.
Pons, "Relativistic models of magnetars: the twisted-torus magnetic field configuration," Monthly Notices of the Royal Astronomical Society, vol.
A certain class of neutron stars, dubbed magnetars have magnetic fields so powerful that they would make our Earth bound magnets seem like kiddie toys.
"Magnetar represents a great strategic partner as we expand our ability to provide credit for small business owners nationwide and pursue our mission to become the leading SBA 504 lender," said Chris Hurn, Founder/CEO of Fountainhead.
Our magnetar study with Suzaku utilizes its wide-band capability, realized by the HXD (34) and the X-ray Imaging Spectrometer (XIS).
They hunted for runaway stars - objects escaping the cluster at high velocities - that might have been kicked out of orbit by the supernova explosion that formed the magnetar. One star, known as Westerlund 1-5, was found to be doing just that.
In this sense, the study of compact objects such as black holes, neutron stars, magnetars, etc., is certainly a topic of great interest, mainly, because these objects could be used as remote laboratories to test fundamental physics, in particular, the validity of general relativity in the strong field limit yet (Stella & Vietri 1999, Pachon et al.
The SEC said Merrill Lynch failed to inform investors that hedge fund firm Magnetar Capital LLC had a third-party role and exercised significant influence over the selection of collateral for the CDOs Octans I CDO Ltd.
Tallgrass is owned by the management team of Tallgrass, Kelso & Company, and a limited group of investors led by The Energy & Minerals Group including Magnetar Capital.
When Dune's negotiations with Fox for another renewal broke down, Seelig, who'd left Dune 18 months prior, stepped in and closed the deal through the Seelig Group and Chicago-based hedge fund Magnetar.