black hole – Astronomy Now

‘Virtual’ telescope captures first direct image of black hole

10 April 2019 Astronomy Now

For the first time, astronomers have captured a direct view of the environment just outside the event horizon of a supermassive black hole.

Intermediate mass black hole found near galactic centre

28 February 2019 Astronomy Now

Astronomers studying a swirling cloud of gas near the centre of the Milky Way have found what appears to be an intermediate mass black hole.

Astronomers debate an unprecedented “holy cow” outburst

13 January 2019 Astronomy Now

Astronomers are debating what triggered an explosion of light in a galaxy 200 million like years away that was 10 to 100 times brighter than a typical supernova.

Gravity waves marked birth of merged hypermassive neutron star

14 November 2018 Astronomy Now

Detailed analysis of gravitational wave data collected last year indicating the merger of two neutron stars shows the result was a single massive neutron star, not a black hole.

Astronomers ‘see’ aftermath of black hole lunching on doomed star

15 June 2018 Astronomy Now

For the first time, astronomers have directly witnessed the aftermath of a black hole consuming a nearby star, imaging the formation and expansion of a high-speed jet of material ejected in the maelstrom.

When black holes devour stars, it all depends on how you look at it

30 May 2018 Astronomy Now

Black holes devouring nearby stars generate a variety of effects, but a new model suggests what is seen on Earth depends on the hole’s orientation and the viewing angle. Surveys are planned to search for more such tidal disruption events.

NASA hails now-departed Rossi X-ray observer

7 May 2018 Astronomy Now

NASA’s Rossi X-ray Timing Explorer, decommissioned in 2012, fell back into the atmosphere and burned up 30 April, finally bringing a remarkably successful mission to study black holes and neutron stars to a fiery end.

Supermassive black holes growing faster than expected

4 March 2018 Astronomy Now

Supermassive black holes lurking in the hearts of countless galaxies are growing faster than astronomers suspected based on earlier studies.

New tool for gravitational wave detection

28 January 2018 Astronomy Now

New “deep learning” algorithms are expected to improve the detection of gravitational wave signals and, with additional work, may help identify electromagnetic counterparts to gravity wave events

NASA’s Swift mission maps a star’s ‘death spiral’ into a black hole

21 March 2017 Stephen Clark

Some 290 million years ago, a star much like the sun wandered too close to the central black hole of its galaxy. Intense tides tore the star apart, which produced an eruption of optical, ultraviolet and X-ray light that first reached Earth in 2014.