Sunday, September 15, 2019

Scientists Detect Tones in the Ringing of a Newborn Black Hole for the First Time

MIT scientists have captured the “ringing” of a newly-formed black hole, in the form of gravitational waves, depicted in this artist’s illustration.

If Albert Einstein’s theory of general relativity holds true, then a black hole, born from the cosmically quaking collisions of two massive black holes, should itself “ring” in the aftermath, producing gravitational waves much like a struck bell reverbates sound waves. Einstein predicted that the particular pitch and decay of these gravitational waves should be a direct signature of the newly formed black hole’s mass and spin.

First Water Detected on Potentially ‘Habitable’ Planet

Exoplanet K2-18b (artist’s Impression) showing the planet, its host star and an accompanying planet in this system. Credit: ESA/Hubble, M. Kornmesser

Water vapor has been detected in the atmosphere of a super-Earth with habitable temperatures by UCL researchers in a world first. K2-18b, which is eight times the mass of Earth, is now the only planet orbiting a star outside the Solar System, or ‘exoplanet’, known to have both water and temperatures that could support life.

Saturday, September 14, 2019

Graphene Detector Can Revolutionize Space Telescopes

The image depicts a schematic of terahertz (THz) heterodyne detection with graphene. In this, two THz waves (red) are coupled into graphene, where they are combined or mixed. One of the waves is a high intensity signal generated by a local THz light source (i.e. a local oscillator), at a known THz frequency. The other signal is a faint THz wave that mimics the waves coming from space. Illustration: Hans He​​​​​

Researchers from Chalmers University of Technology have demonstrated a detector made from graphene that could revolutionize the sensors used in next-generation space telescopes. The findings were recently published in the scientific journal Nature Astronomy.

Giant Balloon-like Structures Discovered at Center of Milky Way

A radio image of the centerof the Milky Way with a portion of theMeerKAT telescope array in the foreground. The plane of the galaxy ismarked by a series ofbright features, exploded stars and regionswhere new stars are being born, and runs diagonally across the imagefrom lower right to top center.The black hole at the centerof theMilky Way is hidden in the brightest of these extended regions.The radio bubbles extend from betweenthetwonearest antennasto the upperright corner.Many magnetized filamentscan be seen runningparallel to the bubbles.In this composite view, the sky to the left of the second nearest antenna is the night sky visible to the unaided eye, and the radio image to the right has been enlarged to highlight its fine features.

An international team of astronomers, including Northwestern University's Farhad Yusef-Zadeh, has discovered one of the largest structures ever observed in the Milky Way. A newly spotted pair of radio-emitting bubbles reach hundreds of light-years tall, dwarfing all other structures in the central region of the galaxy.

Friday, September 13, 2019

Explosive Nitrogen Created Craters That Pock Titan

An artist's concept of a lake at the north pole of Saturn's moon Titan illustrates raised rims and rampart-like features such as those seen by NASA's Cassini spacecraft around the moon's Winnipeg Lacus.

The topography of Titan, the largest of moon of Saturn, seems serene in Cassini mission images, but lakes of liquid methane that pock the landscape were likely formed by explosive, pressurized nitrogen just under the moon’s crusty surface, according to research published Sept. 9 in Nature Geoscience.

Thursday, September 12, 2019

Are Black Holes Made of Dark Energy?

Objects like Powehi, the recently imaged supermassive compact object at the center of galaxy M87, might actually be GEODEs. The Powehi GEODEs, shown to scale, would be approximately 2/3 the radius of the dark region imaged by the Event Horizon Telescope. This is nearly the same size expected for a black hole. The region containing Dark Energy (green) is slightly larger than a black hole of the same mass. The properties of any crust (purple), if present, depend on the particular GEODE model. (Photo credit: EHT collaboration; NASA/CXC/Villanova University)

Two University of Hawaiʻi at Mānoa researchers have identified and corrected a subtle error that was made when applying Einstein’s equations to model the growth of the universe.

Wednesday, September 11, 2019

Afterglow Sheds Light on the Nature, Origin of Neutron Star Collisions

An artistic rendering of two neutron stars merging. Credit: NSF/LIGO/Sonoma State/A. Simonnet

The final chapter of the historic detection of the powerful merger of two neutron stars in 2017 officially has been written. After the extremely bright burst finally faded to black, an international team led by Northwestern University painstakingly constructed its afterglow -- the last bit of the famed event's life cycle.

Bingo Developing Industry: Meet & Greet Dragonfish!

It's no secret that the popularity of any game depends on many factors. This is both conveniences for the user, and hype among the audience for whom the game is intended, and a design that hundreds of specialists often work on. And all this is immediately called development. It depends on its success whether the game will bring profit to its owners, and in the case of gambling, whether it will please the players’ eyes and wallet.