A Broad-line Quasar with Unexplained Extreme Velocity Offsets: Post-shock Outflow?

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Standard

A Broad-line Quasar with Unexplained Extreme Velocity Offsets: Post-shock Outflow? / Rusakov, Vadim; Steinhardt, Charles L.; Schramm, Malte; Faisst, Andreas L.; Masters, Daniel; Mobasher, Bahram; Pattarakijwanich, Petchara.

I: Astrophysical Journal, Bind 944, Nr. 2, 217, 28.02.2023.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Rusakov, V, Steinhardt, CL, Schramm, M, Faisst, AL, Masters, D, Mobasher, B & Pattarakijwanich, P 2023, 'A Broad-line Quasar with Unexplained Extreme Velocity Offsets: Post-shock Outflow?', Astrophysical Journal, bind 944, nr. 2, 217. https://doi.org/10.3847/1538-4357/acadd8

APA

Rusakov, V., Steinhardt, C. L., Schramm, M., Faisst, A. L., Masters, D., Mobasher, B., & Pattarakijwanich, P. (2023). A Broad-line Quasar with Unexplained Extreme Velocity Offsets: Post-shock Outflow? Astrophysical Journal, 944(2), [217]. https://doi.org/10.3847/1538-4357/acadd8

Vancouver

Rusakov V, Steinhardt CL, Schramm M, Faisst AL, Masters D, Mobasher B o.a. A Broad-line Quasar with Unexplained Extreme Velocity Offsets: Post-shock Outflow? Astrophysical Journal. 2023 feb. 28;944(2). 217. https://doi.org/10.3847/1538-4357/acadd8

Author

Rusakov, Vadim ; Steinhardt, Charles L. ; Schramm, Malte ; Faisst, Andreas L. ; Masters, Daniel ; Mobasher, Bahram ; Pattarakijwanich, Petchara. / A Broad-line Quasar with Unexplained Extreme Velocity Offsets: Post-shock Outflow?. I: Astrophysical Journal. 2023 ; Bind 944, Nr. 2.

Bibtex

@article{d914e2fc1f844956b744c2a79ed62d21,
title = "A Broad-line Quasar with Unexplained Extreme Velocity Offsets: Post-shock Outflow?",
abstract = "The quasar SDSS 0956 + 5128 exhibits three distinct velocity components with large offsets in emission: the systemic velocity of [O II], [O III], and [Ne III] narrow lines have redshift z = 0.7142; the broad Mg II line is shifted by −1200 km s−1 with respect to the narrow lines; the broad Hα and Hβ lines are at −4100 km s−1. We present new Hubble Space Telescope spectra of Lyα and C IV emission lines and high-resolution images of the quasar. The offsets of these lines are consistent with the velocity component of the Balmer emission, and the photometry in optical and near-infrared wavelengths does not show any signs of recent mergers in the host galaxy or irregularities in the location of the quasar. The data do not confirm predictions of the previous most likely hypotheses involving a special orientation and morphology of the quasar disk, such as in the recoiling black hole scenario, neither it is consistent with accretion disk winds. Instead, based on the cumulative evidence, we propose a new scenario, in which the broad-line region is in the state of outflow caused by a strong shock wave, with a supernova as a possible event for producing the shock ejecta.",
author = "Vadim Rusakov and Steinhardt, {Charles L.} and Malte Schramm and Faisst, {Andreas L.} and Daniel Masters and Bahram Mobasher and Petchara Pattarakijwanich",
year = "2023",
month = feb,
day = "28",
doi = "10.3847/1538-4357/acadd8",
language = "English",
volume = "944",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "2",

}

RIS

TY - JOUR

T1 - A Broad-line Quasar with Unexplained Extreme Velocity Offsets: Post-shock Outflow?

AU - Rusakov, Vadim

AU - Steinhardt, Charles L.

AU - Schramm, Malte

AU - Faisst, Andreas L.

AU - Masters, Daniel

AU - Mobasher, Bahram

AU - Pattarakijwanich, Petchara

PY - 2023/2/28

Y1 - 2023/2/28

N2 - The quasar SDSS 0956 + 5128 exhibits three distinct velocity components with large offsets in emission: the systemic velocity of [O II], [O III], and [Ne III] narrow lines have redshift z = 0.7142; the broad Mg II line is shifted by −1200 km s−1 with respect to the narrow lines; the broad Hα and Hβ lines are at −4100 km s−1. We present new Hubble Space Telescope spectra of Lyα and C IV emission lines and high-resolution images of the quasar. The offsets of these lines are consistent with the velocity component of the Balmer emission, and the photometry in optical and near-infrared wavelengths does not show any signs of recent mergers in the host galaxy or irregularities in the location of the quasar. The data do not confirm predictions of the previous most likely hypotheses involving a special orientation and morphology of the quasar disk, such as in the recoiling black hole scenario, neither it is consistent with accretion disk winds. Instead, based on the cumulative evidence, we propose a new scenario, in which the broad-line region is in the state of outflow caused by a strong shock wave, with a supernova as a possible event for producing the shock ejecta.

AB - The quasar SDSS 0956 + 5128 exhibits three distinct velocity components with large offsets in emission: the systemic velocity of [O II], [O III], and [Ne III] narrow lines have redshift z = 0.7142; the broad Mg II line is shifted by −1200 km s−1 with respect to the narrow lines; the broad Hα and Hβ lines are at −4100 km s−1. We present new Hubble Space Telescope spectra of Lyα and C IV emission lines and high-resolution images of the quasar. The offsets of these lines are consistent with the velocity component of the Balmer emission, and the photometry in optical and near-infrared wavelengths does not show any signs of recent mergers in the host galaxy or irregularities in the location of the quasar. The data do not confirm predictions of the previous most likely hypotheses involving a special orientation and morphology of the quasar disk, such as in the recoiling black hole scenario, neither it is consistent with accretion disk winds. Instead, based on the cumulative evidence, we propose a new scenario, in which the broad-line region is in the state of outflow caused by a strong shock wave, with a supernova as a possible event for producing the shock ejecta.

U2 - 10.3847/1538-4357/acadd8

DO - 10.3847/1538-4357/acadd8

M3 - Journal article

VL - 944

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

M1 - 217

ER -

ID: 338190521