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Search results for “Astrophysics”

1,000+ results for "Astrophysics"

'Seeing' the quantum world

A four-minute animated movie created by University of Calgary's Barry Sanders explains the nature of quantum computing, its power and underlying science. The animation uses state-of-the-art techniques to convey quantum concepts in an accurate and exciting way.

SourceUniversity of Calgary·JournalNew Journal of Physics·DateDec 17, 2008

Strange travels

Research focuses on transport phenomena in heterogeneous media, exploring anomalous transport and its role in hydrogeology. The study highlights the importance of concentration tails in assessing radioactive waste disposal reliability.

SourceSoil Science Society of America·JournalVadose Zone Journal·DateDec 17, 2008

Cookie cutter in the sky

Researchers found that all active galactic nuclei have a similar physical structure, independent of the black hole's size. The observation constrains current ideas on how glow around black holes is produced, allowing for further study of these enigmatic objects.

SourceAmerican Museum of Natural History·JournalMonthly Notices of the Royal Astronomical Society·DateDec 16, 2008

MIT reports finer lines for microchips

Researchers at MIT have achieved a significant advance in nanoscale lithographic technology, enabling the creation of finer patterns of lines over larger areas. The new technique has the potential to lead to commercialization of many new nanotechnology inventions that have languished due to manufacturing limitations.

SourceMassachusetts Institute of Technology·JournalOptics Letters·DateJul 8, 2008

Einstein was right, McGill astrophysicists say

Researchers at McGill University confirmed Einstein's prediction that a binary-pulsar system's spin axis should precess due to general relativity. The team observed the unique PSR J0737-3039A/B twin-pulsar system and found that one pulsar's spin axis is indeed precessing as predicted.

SourceMcGill University·JournalScience·DateJul 3, 2008

GLAST ready to go!

The Gamma-ray Large Area Space Telescope (GLAST) is scheduled to launch on a United Launch Alliance's Delta II Heavy rocket on June 11. The launch window opens at 11:45 a.m.-1:40 p.m. EDT, pending weather conditions. GLAST will survey the universe over an energy range of 20 million electron volts to over 300 billion electron volts.

Where mathematics and astrophysics meet

Mathematicians Dmitry Khavinson and Genevra Neumann describe how their work on the Fundamental Theorem of Algebra led them to questions in astrophysics, specifically gravitational lensing. Their result resolves a conjecture of Sun Hong Rhie, establishing that the number of zeros of certain rational harmonic functions is 5n - 5.

SourceAmerican Mathematical Society·JournalNotices of the American Mathematical Society·DateJun 5, 2008

Federal polar bear research critically flawed, says study in INFORMS journal

A study published in INFORMS journal Interfaces found that US polar bear research is flawed due to inadequate forecasting methodologies. The researchers concluded that the studies do not adequately support assumptions about sea ice changes and polar bears' ability to adapt, making it difficult to justify listing the species as endangered.

Cosmic engines surprise XMM-Newton

Researchers used XMM-Newton to observe four polar BAL quasars, finding two of them emitted more X-rays than anticipated, suggesting a lack of absorbing gas. This discovery may indicate that BAL quasars are more complex than initially thought, with both equatorial and polar outflows potentially occurring simultaneously.

SourceEuropean Space Agency·JournalThe Astrophysical Journal Letters·DateApr 7, 2008

Jekyll-Hyde neutron star discovered by researchers

Researchers have discovered a neutron star that undergoes a dramatic transformation from a pulsar to a magnetar, providing insight into the evolutionary connection between these two types of ultradense objects. The discovery was made using data from NASA's Rossi X-ray Timing Explorer and Chandra X-ray Observatory satellites.

SourceMcGill University·JournalScience·DateFeb 21, 2008