Galaxy Zoo Talk

Distant quasar has jet, X-rays but no radio waves

  • Budgieye by Budgieye moderator

    SERENDIPITOUS DISCOVERY OF AN EXTENDED X-RAY JET WITHOUT A RADIO COUNTERPART
    IN A HIGH-REDSHIFT QUASAR http://arxiv.org/pdf/1509.04822v2.pdf

    A recent Chandra observation of the nearby galaxy cluster Abell 585
    has led to the discovery of an extended X-ray jet associated with the
    high-redshift background quasar B3 0727+409, a luminous radio source
    at redshift z=2.5. This is one of only few examples of high-redshift
    X-ray jets known to date. It has a clear extension of about 12",
    corresponding to a projected length of ~100 kpc, with a possible hot
    spot located 35" from the quasar. The archival high resolution VLA
    maps surprisingly reveal no extended jet emission, except for one knot
    about 1.4" from the quasar. The high X-ray to radio luminosity ratio
    for this source appears consistent with the ∝(1+z)4 amplification
    expected from the inverse Compton radiative model. This serendipitous
    discovery may signal the existence of an entire population of similar
    systems with bright X-ray and faint radio jets at high redshift, a
    selection bias which must be accounted for when drawing any
    conclusions about the redshift evolution of jet properties and indeed
    about the cosmological evolution of supermassive black holes and
    active galactic nuclei in general.


    enter image description here

    http://www.nasa.gov/mission_pages/chandra/glow-from-the-big-bang-allows-discovery-of-distant-black-hole-jet.html


    enter image description here

    http://skyserver.sdss.org/dr12/en/tools/explore/Summary.aspx?id=1237673705577382031

    enter image description here

    no jet to NW in optical. I could hope for redshifted UV, couldn't I?


    link to DSS

    https://www.google.com/sky/#latitude=40.82863732210213&longitude=652.7129030227661&zoom=14&Spitzer=0.00&ChandraXO=0.00&Galex=0.00&IRAS=0.00&WMAP=0.00&Cassini=0.00&slide=1&mI=-1&oI=-1

    outside DECalS footprint


    Posted