TY - JOUR
T1 - BALQSO spectra explained by shock disruption of galactic clouds
AU - Zeilig-Hess, Meir
AU - Levinson, Amir
AU - Xu, Xinfeng
AU - Arav, Nahum
N1 - Publisher Copyright:
© 2019 The Author(s).
PY - 2020
Y1 - 2020
N2 - Blue-shifted broad absorption lines (BALs) detected in quasar’s spectra are indicative of active galactic nuclei (AGN) outflows. We show, using 2D hydrodynamical simulations, that disruption of interstellar clouds by a fast AGN wind can lead to formation of cold, dense high-speed blobs that give rise to broad absorption features in the transmission spectrum of the AGN continuum source. For a wind velocity of 0.1c and sufficiently high cloud density (nc 104 cm−3; depending on size), absorption troughs with velocities up to about 3000 km s−1can be produced. For slower winds and/or lower cloud density, the anticipated velocity of the absorbing clouds should be smaller.
AB - Blue-shifted broad absorption lines (BALs) detected in quasar’s spectra are indicative of active galactic nuclei (AGN) outflows. We show, using 2D hydrodynamical simulations, that disruption of interstellar clouds by a fast AGN wind can lead to formation of cold, dense high-speed blobs that give rise to broad absorption features in the transmission spectrum of the AGN continuum source. For a wind velocity of 0.1c and sufficiently high cloud density (nc 104 cm−3; depending on size), absorption troughs with velocities up to about 3000 km s−1can be produced. For slower winds and/or lower cloud density, the anticipated velocity of the absorbing clouds should be smaller.
KW - Galaxies: active
KW - ISM: clouds
KW - ISM: jets and outflows
KW - Quasars: absorption lines
UR - http://www.scopus.com/inward/record.url?scp=85096992936&partnerID=8YFLogxK
U2 - 10.1093/MNRAS/STZ3352
DO - 10.1093/MNRAS/STZ3352
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:85096992936
SN - 0035-8711
VL - 491
SP - 4325
EP - 4333
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -