Spectro-timing analysis of a highly variable narrow-line Seyfert 1 galaxy NGC 4748 with AstroSat and XMM-Newton
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Astrophysics and Astronomy"
DOI: 10.1007/s12036-021-09719-1
Abstract: We present a detailed timing and spectral study of an extremely variable narrow-line Seyfert 1 galaxy NGC 4748 using observations in the year 2017 and 2014 performed with AstroSat and XMM-Newton , respectively. Both observations show extremely… read more here.
Keywords: galaxy ngc; line; variable narrow; seyfert galaxy ... See more keywords
Outflows in the Seyfert 2 galaxy NGC 5643 traced by the [S iii] emission
Sign Up to like & getrecommendations! Published in 2018 at "Publications of the Astronomical Society of Australia"
DOI: 10.1017/pasa.2018.31
Abstract: Abstract We use Gemini Multi-Object Spectrograph integral Field Unit observations of the inner 285 × 400 pc2 region of the Seyfert 2 galaxy NGC 5643 to map the [S iii]λ9069 emission line flux distribution and… read more here.
Keywords: galaxy; galaxy ngc; kinematics; seyfert galaxy ... See more keywords
Detection of a variable ultrafast outflow in the narrow-line Seyfert 1 galaxy PG 1448+273
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1425
Abstract: Relativistically blueshifted absorption features of highly ionised ions, the so-called ultra-fast outflows (UFOs), have been detected in the X-ray spectra of a number of accreting supermassive black holes. If these features truly originate from accretion… read more here.
Keywords: detection; 1448 273; seyfert galaxy; line seyfert ... See more keywords
The awakening beast in the Seyfert 1 Galaxy KUG 1141+371 – I
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa3737
Abstract: KUG 1141+371 is a Seyfert 1 galaxy that shows a simultaneous flux increase in the optical and UV bands in the past decade. For instance, the latest Swift observation in 2019 shows that the UVW2 flux… read more here.
Keywords: kug 1141; seyfert galaxy; 1141 371;
Cold molecular gas outflow encasing the ionised one in the Seyfert galaxy NGC 3281
Sign Up to like & getrecommendations! Published in 2023 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1076
Abstract: We present ALMA CO (2-1) observations of the Seyfert 2 galaxy NGC 3281 at ∼ 100 pc spatial resolution. This galaxy was previously known to present a bi-conical ionised gas outflow extending to 2 kpc from the nucleus. The analysis of… read more here.
Keywords: galaxy ngc; gas; encasing ionised; molecular gas ... See more keywords
Correlated X-ray/UV/optical emission and short-term variability in a Seyfert 1 galaxy NGC 4593
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx3103
Abstract: We present a detailed multi-frequency analysis of an intense monitoring programme of Seyfert 1 galaxy NGC 4593 over a duration of nearly for a month with Swift observatory. We used 185 pointings to study the… read more here.
Keywords: variability; ngc 4593; seyfert galaxy; ray ... See more keywords
Supernova 2018aoq and a distance to Seyfert galaxy NGC 4151
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz1474
Abstract: We present optical photometric observations of SN 2018aoq from 2 to 100 days after explosion, and 7 spectra at epochs from 11 to 71 days. The light curves and spectra are typical for SNe II-P.… read more here.
Keywords: galaxy ngc; supernova 2018aoq; distance; ngc 4151 ... See more keywords
Outflowing gas in a compact ionization cone in the Seyfert 2 galaxy ESO 153-G20
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz2333
Abstract: We present two-dimensional ionized gas and stellar kinematics in the inner 1.4 × 1.9 kpc2 of the Seyfert 2 galaxy ESO 153-G20 obtained with the Gemini-South/Gemini multi-object spectrograph integral field unit (GMOS-IFU) at a spatial resolution of ~250 pc and… read more here.
Keywords: galaxy eso; velocity; gas; kinematics ... See more keywords
CO excitation in the Seyfert galaxy NGC 7130
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnrasl/slx077
Abstract: We present a coherent multiband modelling of the carbon monoxide (CO) spectral energy distribution of the local Seyfert galaxy NGC 7130 to assess the impact of the active galactic nucleus (AGN) activity on the molecular… read more here.
Keywords: ngc 7130; galaxy ngc; seyfert galaxy; excitation ... See more keywords