Gizmodo reporter Ryan Mandelbaum explores the five potential gravitational wave detections made by the LIGO and Virgo observatories in the last month. Prof. Salvatore Vitale explained that the possible detection of a black hole colliding with a neutron star could provide scientists with a better way to measure how quickly the universe is expanding.
“LIGO/VIRGO has opened up its notification process to the public,” explains Ars Technica reporter John Zimmer. “In short, anyone who’s interested can find out what LIGO is seeing within a day of when the LIGO scientists themselves do.”
The LIGO and Virgo gravitational wave detectors have identified five new cosmic events since resuming operations last month, reports Sarah Lewin for Space.com. “The most exciting thing of the beginning of O3 [this third observation round] is that it's clear we are going from one event every few months to a few events every month," explains Prof. Salvatore Vitale.
Boston Globe reporter Martin Finucane writes about how TESS has discovered an Earth-sized planet orbiting a star 52 light years from Earth. “The new planet HD, 21749c, orbits the star HD 21749. It circles the star in 7.8 days,” Finucane explains. “The planet is probably rocky and uninhabitable, with temperatures on the surface of up to 800 degrees.”
Forbes contributor Jamie Carter writes that TESS has identified an Earth-sized exoplanet orbiting a star 52 light years from Earth. The planet "takes about eight days to orbit the host star and is similar in size to Earth at 89% its diameter,” writes Carter. “A likely rocky world, it's thought to have surface temperatures as high as 800°F /427°C.”
The MIT-led TESS mission has discovered its first Earth-sized exoplanet, reports Ashley Strickland for CNN. “There was quite some detective work involved, and the right people were there at the right time,” says postdoctoral fellow Diana Dragomir. “But we were lucky, and we caught the signals, and they were really clear."
Prof. Nergis Mavalvala speaks with Ira Flatow of Science Friday about how she and her colleagues are working on a new technology called squeezed light, which could enable LIGO to see even more of the cosmos. Mavalvala explains that squeezed light is “a somewhat exotic quantum state of light that we engineer in our labs to improve the sensitivity of LIGO.”
Postdoctoral fellow Dheeraj Pasham speaks with Ira Flatow of Science Friday about his research calculating that a supermassive black hole 300 million light years from Earth is spinning at half the speed of light. Pasham explains that a black hole's spin rate provides information about the “channel through which it grew, all the way from a couple of years after the Big Bang until now.”
Space.com reporter Mike Wall writes that researchers have calculated a supermassive black hole’s rotation rate by analyzing the X-rays it emitted after consuming a nearby star. The researchers found that “the huge black hole, known as ASASSN-14li, is spinning at least 50 percent the speed of light.”
Gizmodo reporter Ryan Mandelbaum writes that researchers determined how fast a supermassive black hole spins by measuring a star being swallowed by the black hole. Postdoctoral fellow Dheeraj Pasham explains that, “this measurement is different in the sense that we were able to measure the spin of a black hole that was dormant.”
Astronomers from MIT have detected echoes in X-ray flares emitted by a black hole consuming stellar material, writes Charles Q. Choi for Space.com. The findings “might shed light on how matter behaves not just as it falls into stellar-mass black holes,” writes Choi, “but also supermassive black holes millions to billions of times the mass of the sun.”
TechCrunch reporter Devin Coldewey writes that a team of researchers, including MIT scientists, have detected fast radio bursts (FRB) coming from a distant galaxy. Coldewey explains that the researchers used the Canadian Hydrogen Intensity Mapping Experiment radio telescope, which “points at the whole sky and chooses where to ‘look’ using software,” to identify 13 new FRBs.
Nature reporter Alexandra Witze highlights the TESS satellite’s success in uncovering new exoplanets outside our solar system. Senior research scientist George Ricker feels, “TESS works better than team members had dared to dream,” Witze writes, adding that “its four cameras can see objects 20% fainter, and focus more sharply, than originally expected.”
NASA’s MIT-led TESS mission has discovered a new exoplanet orbiting a star 53 light years from Earth, reports Mike Wall for Space.com. The “sub-Neptune” planet is “about three times bigger than Earth, which means it's likely gaseous rather than rocky,” writes Wall.
CNN reporter Ashley Strickland writes that NASA’s planet-hunting satellite TESS has discovered another exoplanet 53 light years away. Strickland explains that the exoplanet orbits “a bright neighboring star in the Reticulum constellation, with a 36-day orbit and a surface temperature of 300 degrees Fahrenheit.”