Revealing hidden black holes

The spiral galaxy NGC 3627 is located about 30 million light years from Earth. This composite image includes X-ray data from NASA’s Chandra X-ray Observatory (blue), infrared data from the Spitzer Space Telescope (red), and optical data from the Hubble Space Telescope and the Very Large Telescope (yellow).
A search using archival data from previous Chandra observations of a sample of 62 nearby galaxies has shown that 37 of the galaxies, including NGC 3627, contain X-ray sources in their centers. Most of these sources are likely powered by central supermassive black holes. The survey, which also used data from the Spitzer Infrared Nearby Galaxy Survey, found that seven of the 37 sources are new supermassive black hole candidates.
Confirming previous Chandra results, this study finds the fraction of galaxies found to be hosting supermassive black holes is much higher than found with optical searches. This shows the ability of X-ray observations to find black holes in galaxies where relatively low-level black hole activity has either been hidden by obscuring material or washed out by the bright optical light of the galaxy.
The combined X-ray and infrared data suggest that the nuclear activity in a galaxy is not necessarily related to the amount of star-formation in the galaxy, contrary to some early claims. In contrast, these new results suggest that the mass of the supermassive black hole and the rate at which the black hole accretes matter are both greater for galaxies with greater total masses.

Image credit: NASA/CXC/Ohio State Univ./C.Grier et al.; Optical: NASA/STScI, ESO/WFI; Infrared: NASA/JPL-Caltech

Revealing hidden black holes

The spiral galaxy NGC 3627 is located about 30 million light years from Earth. This composite image includes X-ray data from NASA’s Chandra X-ray Observatory (blue), infrared data from the Spitzer Space Telescope (red), and optical data from the Hubble Space Telescope and the Very Large Telescope (yellow).

A search using archival data from previous Chandra observations of a sample of 62 nearby galaxies has shown that 37 of the galaxies, including NGC 3627, contain X-ray sources in their centers. Most of these sources are likely powered by central supermassive black holes. The survey, which also used data from the Spitzer Infrared Nearby Galaxy Survey, found that seven of the 37 sources are new supermassive black hole candidates.

Confirming previous Chandra results, this study finds the fraction of galaxies found to be hosting supermassive black holes is much higher than found with optical searches. This shows the ability of X-ray observations to find black holes in galaxies where relatively low-level black hole activity has either been hidden by obscuring material or washed out by the bright optical light of the galaxy.

The combined X-ray and infrared data suggest that the nuclear activity in a galaxy is not necessarily related to the amount of star-formation in the galaxy, contrary to some early claims. In contrast, these new results suggest that the mass of the supermassive black hole and the rate at which the black hole accretes matter are both greater for galaxies with greater total masses.

Image credit: NASA/CXC/Ohio State Univ./C.Grier et al.; Optical: NASA/STScI, ESO/WFI; Infrared: NASA/JPL-Caltech

  1. rinaminamar reblogged this from darkdemandingchild
  2. grander-maybes reblogged this from matisse1907
  3. i-got-this-shit reblogged this from creativityisntall
  4. creativityisntall reblogged this from matisse1907
  5. matisse1907 reblogged this from rhinest0ne-eyez
  6. rhinest0ne-eyez reblogged this from funeral-faerie
  7. funeral-faerie reblogged this from the-tinymermaid
  8. eyekandie reblogged this from distant-traveller
  9. the-carebear-stare reblogged this from distant-traveller
  10. jessicarose127 reblogged this from aeonus
  11. annika-janeway-mills reblogged this from aeonus
  12. aeonus reblogged this from distant-traveller
  13. pixiedustlyfe reblogged this from the-tinymermaid
  14. prettyslothsmakegraves reblogged this from the-tinymermaid
  15. the-tinymermaid reblogged this from thenewenlightenmentage
  16. atypical-eccentric reblogged this from distant-traveller
  17. n-ked reblogged this from sinkingnight
  18. freelly reblogged this from sinkingnight
  19. sinkingnight reblogged this from megacosms
  20. spacesightings reblogged this from distant-traveller
  21. xandraj5te reblogged this from distant-traveller
  22. suenoquimica reblogged this from distant-traveller
  23. mdrnvamps reblogged this from doctahhh
  24. tokui-ten reblogged this from distant-traveller
  25. anothersoullessginger reblogged this from thenewenlightenmentage
  26. kiunlo reblogged this from doctahhh
  27. doctahhh reblogged this from star-gazer5
  28. elasticimaginaut reblogged this from thenewenlightenmentage
  29. lovelyuniversee reblogged this from thenewenlightenmentage
  30. holy-shit-8 reblogged this from thenewenlightenmentage
  31. star-gazer5 reblogged this from thenewenlightenmentage
  32. dragon-ruler reblogged this from moderatelyinterestingweirdo
  33. nikkiftwtrick reblogged this from heavenhighh
  34. moderatelyinterestingweirdo reblogged this from thenewenlightenmentage

Theme NIGHTNIGHT by DEDDY

Hit Counter