In the scenario proposed by the astrophysicists, the gas from the companion star is channeled along the magnetic field lines until it slams into the pulsar magnetic poles. This gas, heated to extreme temperatures, produces high-energy photons. These photons, emitted periodically at the pulsar rotation frequency, are detected by the INTEGRAL satellite. Additional observations by NASAs Rossi X-ray Timing Explorer show that during the cannibalization of the companion star, the pulsar spins faster and faster. The star’s matter, attracted by the very strong pulsar gravitational field, supplies the energy needed to accelerate the pulsar rotation.
This binary pulsar, known as IGR J00291+5934, was discovered thanks to the INTEGRAL’s sensitive detectors, during a routine scan of the Milky Way on 2004, December 2. Follow-up observations with the Rossi X-ray Timing Explorer satellite, designed to study rapid time variations, fund the pulsar period to be very fast, with a revolution every 1.67 milliseconds. The low mass companion star was founded to be approximately 40 times the Jupiter mass with an orbital period around 2.5 hours.
This fast-spinning pulsar is the first discovered by INTEGRAL and the fastest of a six members family. These observations back up the hypothesis that fast-spinning isolated pulsars are the consequence of this absorption process.
Célie Simeray | alfa
A quantum spin liquid
24.10.2017 | Boston College
Single nanoparticle mapping paves the way for better nanotechnology
24.10.2017 | Chalmers University of Technology
Salmonellae are dangerous pathogens that enter the body via contaminated food and can cause severe infections. But these bacteria are also known to target...
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
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17.10.2017 | Event News
10.10.2017 | Event News
24.10.2017 | Physics and Astronomy
24.10.2017 | Physics and Astronomy
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