Spectrum of M87 Nucleus

Home Forums Spectroscopy Spectrum of M87 Nucleus

Viewing 7 posts - 1 through 7 (of 7 total)
  • Author
    Posts
  • #574308
    Robin Leadbeater
    Participant

    Since M87 has been in the news recently with the radio image of the region immediately surrounding the black hole, I thought I would take a spectrum of this region using the ALPY600.

    https://britastro.org/node/17807

    Cheers

    Robin

    #580969
    John Coffin
    Participant

    Thanks for sharing that. Can you add any links to the radio image?

    #580970
    Andy Wilson
    Keymaster

    Fascinating spectrum Robin! A good demonstration that the emission lines are generated in the central region of the galaxy.

    Cheers

    Andy

    #580971
    Robin Leadbeater
    Participant

    Hi John, 

    I have added links to the AAS article on the radio image (just 50 micro arcsec across !) and the source of the 2008 comparison professional spectrum.

    Cheers

    Robin

    #580972
    Robin Leadbeater
    Participant

    Thanks Andy,

    I wonder how compact the emission line source is compared to the region shown in the radio image. (unfortunately the spectrum was not very well focused at H alpha so the extent is not clear in my spectrum)

    Robin

    EDIT this image and spectra from HST suggests the main emission region region extends around 1 arcsec or so across

    http://www.rpi.edu/dept/phys/courses/79205/Pics/HST95/diskM87Data.gif

    #580973
    Andy Wilson
    Keymaster

    I think that would make the emission region about 250 light years across, assuming a distance of 55 million light years.

    Andy

    #580985
    Jack Martin
    Participant

    Robin,

    Good work, so nice to see such detailed spectra and information.

    Regards,

    Jack

    Essex UK

Viewing 7 posts - 1 through 7 (of 7 total)
  • You must be logged in to reply to this topic.