Feeds

Scientists spot pulsar with 4 magnetic poles

Double bubble

Top three mobile application threats

The 209th Meeting of the American Astronomical Society (AAS) in Seattle has been entertained by the news that the neutron star within the Crab Nebula may have twice the normal complement of magnetic poles, the BBC reports.

The nature of the star's radio pulse emissions leads the Arecibo Observatory in Puerto Rico to conclude that it possibly has four magnetic poles. Depending on a pulsar's orientation to Earth, its rotation and said emissions issuing forth from the poles will allow detection of one or two pulses. Where two are detected, as is the case in the Crab Nebula, the emissions from the north and south poles should be identical.

In the case of this particular neutron star, however, scientists detected a main pulse, occasionally producing "enormously strong pulses" dubbed "megapulses", and an "interpulse" which were "dramatically different in their profiles".

Tim Hankins, acting director of the Arecibo Observatory in Puerto Rico, explained: "We think we've got a much more complicated magnetic field than the simple dipole model. What we think is that there is another pole, possibly with a partner, that is influencing and distorting the magnetic field."

The four-pole theory is based on the fact that, although the team has spotted just one extra pole, it will likely have an opposite.

The Crab Nebula pulsar was created as a result of a supernova explosion on 4 July 1054 (AD). Professor Hankins pointed out that the explosion may have been "very asymmetric", adding: "Any models you see of supernova explosions are incredibly convoluted. It just doesn't go down as sphere and rebound as a nice sphere. The magnetic pole is frozen in so it gets all mixed up as well." ®

3 Big data security analytics techniques

More from The Register

next story
KILLER SPONGES menacing California coastline
Surfers are safe, crustaceans less so
Opportunity selfie: Martian winds have given the spunky ol' rover a spring cleaning
Power levels up 70 per cent as the rover keeps on truckin'
Liftoff! SpaceX Falcon 9 lifts Dragon on third resupply mission to ISS
SpaceX snaps smartly into one-second launch window
KILLER ROBOTS, DNA TAMPERING and PEEPING CYBORGS: the future looks bright!
Americans optimistic about technology despite being afraid of EVERYTHING
Discovery time for 200m WONDER MATERIALS shaved from 4 MILLENNIA... to 4 years
Alloy, Alloy: Boffins in speed-classification breakthrough
R.I.P. LADEE: Probe smashes into lunar surface at 3,600mph
Swan dive signs off successful science mission
Elon Musk's LEAKY THRUSTER gas stalls Space Station supply run
Helium seeps from Falcon 9 first stage, delays new legs for NASA robonaut
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.