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News with tag Gravitational waves  RSS
Neutron-star merger yields new puzzle for astrophysicists

Added: 19.01.2018 22:11 | 0 views | 0 comments

The afterglow from the distant neutron-star merger detected last August has continued to brighten - much to the surprise of astrophysicists studying the aftermath of the massive collision that took place about 138 million light years away and sent gravitational waves rippling through the universe. New observations indicate that the gamma ray burst unleashed by the collision is more complex than scientists initially imagined.

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Black hole pair born inside a dying star?

Added: 18.12.2017 22:06 | 1 views | 0 comments

Researchers are investigating the properties of gravitational waves and binary black holes to see if they formed inside a collapsing star.

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Blackbody radiation from a warm object attracts polarizable objects

Added: 08.12.2017 23:10 | 6 views | 0 comments

You might think that a hot object pushes atoms and molecules away due to radiation pressure. But a research team showed that for a polarizable atom, the opposite occurs: the hot object attracts it. Using an atom interferometer, they found the attraction was 20 times stronger than the gravitational attraction between a tungsten object and a cesium atom. Though negligible in most situations, next-generation gravitational wave experiments may have to take this into account.

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Galactic microquasar provides explanation for structure of faraway radio galaxies

Added: 27.11.2017 18:15 | 6 views | 0 comments

New results will aid the study of the distribution of gravitational waves from distant sources.

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Listening for gravitational waves using pulsars

Added: 15.11.2017 14:25 | 8 views | 0 comments

When galaxies collide, their central black holes tend to spiral toward each other, releasing gravitational waves in their cosmic dance. To explore this uncharted area of gravitational wave science, researchers look a natural experiment in the sky called a pulsar timing array. Pulsars are dense remnants of dead stars that regularly emit beams of radio waves, which is why some call them "cosmic lighthouses."

Gravitational waves from merging supermassive black holes will be spotted within 10 years

Added: 13.11.2017 17:36 | 7 views | 0 comments

New research predicts that gravitational waves generated by the merger of two supermassive black holes -- the strongest gravitational waves in the universe -- will be detected within 10 years. The study is the first to use real data, rather than computer simulations, to predict when such an observation will be made.

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Giant star smash-up may have made the biggest neutron star ever

Added: 11.11.2017 19:02 | 10 views | 0 comments

The collision that produced recent gravitational waves may have left behind the biggest neutron star ever seen. But it might have collapsed into a black hole

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Dark energy survives neutron star crash test while rivals fail

Added: 20.10.2017 18:07 | 12 views | 0 comments

We saw gravitational waves and light at the same moment from a neutron star merger, which means Einstein was right and some alternative theories are dead

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