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
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The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
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In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
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