Cygnus X-1: A Stellar Mass Black Hole On the... - Wissenschaft und Deutsch

Cygnus X-1: A Stellar Mass Black Hole

On the left, an optical image from the Digitized Sky Survey shows Cygnus X-1, outlined in a red box. Cygnus X-1 is located near large active regions of star formation in the Milky Way, as seen in this image that spans some 700 light years across. An artist’s illustration on the right depicts what astronomers think is happening within the Cygnus X-1 system. Cygnus X-1 is a so-called stellar-mass black hole, a class of black holes that comes from the collapse of a massive star. The black hole pulls material from a massive, blue companion star toward it. This material forms a disk (shown in red and orange) that rotates around the black hole before falling into it or being redirected away from the black hole in the form of powerful jets. 

A trio of papers with data from radio, optical and X-ray telescopes, including NASA’s Chandra X-ray Observatory, has revealed new details about the birth of this famous black hole that took place millions of years ago. Using X-ray data from Chandra, the Rossi X-ray Timing Explorer, and the Advanced Satellite for Cosmology and Astrophysics, scientists were able to determine the spin of Cygnus X-1 with unprecedented accuracy, showing that the black hole is spinning at very close to its maximum rate. Its event horizon — the point of no return for material falling towards a black hole — is spinning around more than 800 times a second. 

Using optical observations of the companion star and its motion around its unseen companion, the team also made the most precise determination ever for the mass of Cygnus X-1, of 14.8 times the mass of the Sun. It was likely to have been almost this massive at birth, because of lack of time for it to grow appreciably. 

The researchers also announced that they have made the most accurate distance estimate yet of Cygnus X-1 using the National Radio Observatory’s Very Long Baseline Array (VLBA). The new distance is about 6,070 light years from Earth. This accurate distance was a crucial ingredient for making the precise mass and spin determinations. 

source 

  1. littleplasticspaceship reblogged this from scienceyoucanlove
  2. vlrcvd reblogged this from gatotx
  3. gatotx reblogged this from scienceyoucanlove
  4. ohheykayleen reblogged this from scienceyoucanlove
  5. road-to-my-inside reblogged this from scienceyoucanlove
  6. theguynextdoorx reblogged this from scienceyoucanlove
  7. stetitmareanobis reblogged this from scienceyoucanlove
  8. sugah-bread666 reblogged this from scienceyoucanlove
  9. feline-biologist reblogged this from scienceyoucanlove
  10. taneleertivanthecollector reblogged this from scienceyoucanlove
  11. vintage-pain reblogged this from postmortemdecay666
  12. notwitternat reblogged this from mypocketshurt90
  13. starwhal reblogged this from lesbipocalypse
  14. lesbipocalypse reblogged this from witchbladehost
  15. noirchouko reblogged this from knivesandanchors
  16. musicismyeverything2334 reblogged this from mister-taxi
  17. mister-taxi reblogged this from quantum-immortal
  18. inbilla-sig reblogged this from scienceyoucanlove
  19. iammeanttowander reblogged this from kapplesss
  20. an-asian-pers0n reblogged this from deustiel
  21. deustiel reblogged this from khaleesinthetardis
  22. squishy-ass-witch reblogged this from physicscaucie
  23. boomermage reblogged this from we-are-star-stuff
  24. black-morphine reblogged this from mdsf94
  25. mdsf94 reblogged this from kapplesss
  26. kapplesss reblogged this from shychemist
  27. wasteland-observer reblogged this from khaleesinthetardis
  28. khaleesinthetardis reblogged this from mypocketshurt90
  29. highemperorcuco reblogged this from invictascientia
  30. tumbleaboutit reblogged this from sephirajo
  31. tehrymeister reblogged this from whatisnormalme
  32. thatgirl120 reblogged this from invictascientia