By analyzing the historical light curve of blazar PKS 0405-385 from NASA's Fermi spacecraft, Chinese astronomers have detected quasi-periodic oscillation from this source. The discovery, presented in a paper published May ...
There are three types of cone cells in the retina that are called L-cones (sensitive to red light), M-cones (sensitive to green light), and S-cones (sensitive to blue light). The coordinated response of cone cells to visible ...
Optics & Photonics
May 13, 2022
0
6
Various technologies, networks and institutions benefit from or require accurate time keeping to synchronize their activities. Current ways of synchronizing time have some drawbacks that a new proposed method seeks to address. ...
General Physics
May 9, 2022
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1200
Using NASA's Chandra X-ray observatory, astronomers from the Harvard-Smithsonian Center for Astrophysics (CfA) and elsewhere have investigated an active galaxy known as Markarian 78. They report that the source exhibits termination ...
Using NASA's Chandra X-ray observatory and Australia Telescope Compact Array (ATCA), astronomers have investigated a pulsar wind nebula, dubbed "the Goose," powered by a young pulsar known as PSR J1016–5857. Results of ...
The NASA/ESA Hubble Space Telescope is celebrating its 32nd birthday with a stunning look at an unusual close-knit collection of five galaxies, called the Hickson Compact Group 40. This snapshot reflects a special moment ...
Astronomy
Apr 19, 2022
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581
Light on, light off—this is how one could describe the behavior of the nova, which goes by the name RS Ophiuchi (RS Oph). Every 15 years or so, a dramatic explosion occurs in the constellation of the Serpent Bearer. Birthplaces ...
Astronomy
Apr 14, 2022
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461
A NASA-funded team led by SMU researchers think that their small, lightweight device developed to measure spaceship velocity will improve the odds of successful landings on Mars and other planets.
Space Exploration
Apr 13, 2022
0
106
Using the MeerKAT radio telescope and the Arcminute Microkelvin Imager–Large Array (AMI-LA), astronomers have conducted a radio monitoring campaign of the outburst of a recently discovered X-ray binary known as Swift J1858.6−0814. ...
Coalescing supermassive black holes in the centers of merging galaxies fill the universe with low-frequency gravitational waves. Astronomers have been searching for these waves by using large radio telescopes to look for ...
Astronomy
Apr 7, 2022
1
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