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“#Australian telescope finds no signs of alien technology in 10 million star systems” Dipole antennas of the Murchison Widefield Array (MWA) radio telescope in Mid West Western Australia. Credit: Dragonfly Media. A radio telescope in outback Western Australia has completed the deepest and broadest search at low frequencies for alien technologies, scanning a patch of…
“#Cataclysmic variable V1460 Her has a fast spinning white dwarf accreting from an evolved donor star, study finds” The Warwick 1-meter telescope photometry for V1460 Her. Credit: Ashley et al., 2020. An international team of astronomers has conducted spectroscopic and photometric observations of a cataclysmic variable (CV) known as V1460 Her. Results of the study…
“#NASA scientists find depletion of halogens due to giant impact” Credit: University of New Mexico It’s been more than 50 years since the Apollo missions, and in that time, chemical analyses of the recovered lunar materials have revolutionized our understanding of planetary materials. One of the major findings as a result of this research is…
“#METISSE offers new insights into the lives of massive stars” This artist’s impression of different mass stars; from the smallest “red dwarfs”, weighing in at about 0.1 solar masses, to massive “blue” stars weighing around 10 to 100 solar masses. While red dwarfs are the most abundant stars in the Universe, it’s the massive blue…
“#Astronomers explore properties of the high-magnetic field pulsar PSR J1119−6127” X-ray folded light curves of PSR J1119−6127 in the 0.5–10.0 keV energy band from XMM-Newton. Credit: Wang et al., 2020. Using various space observatories, astronomers have conducted multi-wavelength study of a high-magnetic-field pulsar known as PSR J1119−6127, which underwent an outburst in 2016. The results…
“#New observations show planet-forming disc torn apart by its three central stars” ALMA, in which ESO is a partner, and the SPHERE instrument on ESO’s Very Large Telescope have imaged GW Orionis, a triple star system with a peculiar inner region. The new observations revealed that this object has a warped planet-forming disc with a…
“#An unexpected origin story for a lopsided black hole merger” A lopsided merger of two black holes may have unusual origins, based on a reanalysis of LIGO data. Credit: MIT News A lopsided merger of two black holes may have an oddball origin story, according to a new study by researchers at MIT and elsewhere….
“#Researcher proposes universal mechanism for ejection of matter by black holes” Accretion disk (in purple, out of scale). The process occurs in active-core nuclei. A molecular gas cloud that accumulates in the central region is blown away by radiation from the black hole’s accretion disk, forming a huge expanding hot bubble, whose radius can reach…
“#A ‘bang’ in LIGO and Virgo detectors signals most massive gravitational-wave source yet” This artist’s concept illustrates a hierarchical scheme for merging black holes. LIGO and Virgo recently observed a black hole merger with a final mass of 142 times that of the sun, making it the largest of its kind observed in gravitational waves…
“#Heaviest black hole merger is among three recent gravitational wave discoveries” Numerical simulation of two black holes that spiral inwards and merge, emitting gravitational waves. The simulated gravitational wave signal is consistent with the observation made by the LIGO and Virgo gravitational wave detectors on May 21st, 2019 (GW190521). Credit: N. Fischer, H. Pfeiffer, A….