Can we measure the accretion efficiency of active galactic nuclei
- S. Raimundo, A. Fabian, P. S. University
- Physics
- 28 September 2011
The accretion efficiency for individual black holes is very difficult to determine accurately. There are many factors that can influence each step of the calculation, such as the dust and host galaxy…
THE COEVOLUTION OF SUPERMASSIVE BLACK HOLES AND MASSIVE GALAXIES AT HIGH REDSHIFT
- A. Lapi, S. Raimundo, L. Danese
- Physics
- 13 December 2013
We exploit the recent, wide samples of far-infrared (FIR) selected galaxies followed up in X-rays and of X-ray/optically selected active galactic nuclei (AGNs) followed up in the FIR band, along with…
Recalibration of the MBH–σ⋆ Relation for AGN
- Merida Batiste, M. Bentz, S. Raimundo, M. Vestergaard, C. Onken
- Physics
- 8 December 2016
We present a recalibration of the MBH–σ⋆ relation, based on a sample of 16 reverberation-mapped galaxies with newly determined bulge stellar velocity dispersions (σ⋆) from integral-field spectroscopy…
The broad-line type Ic SN 2020bvc: signatures of an off-axis gamma-ray burst afterglow
- L. Izzo, K. Auchettl, E. Ramirez-Ruiz
- Physics
- 13 April 2020
Long-duration gamma-ray bursts (GRBs) are almost unequivocally associated with very energetic, broad-lined supernovae (SNe) of Type Ic-BL. While the gamma-ray emission is emitted in narrow jets, the…
Nuclear molecular outflow in the Seyfert galaxy NGC 3227
- A. Alonso-Herrero, S. García-Burillo, M. Ward
- PhysicsAstronomy & Astrophysics
- 17 June 2019
ALMA observations have revealed nuclear dusty molecular disks or tori with characteristic sizes 15−40 pc in the few Seyferts and low -luminosity AGN that have been studied so far. These structures…
MUSE observations of a changing-look AGN – I. The reappearance of the broad emission lines
- S. Raimundo, M. Vestergaard, J. Koay, D. Lawther, V. Casasola, B. Peterson
- PhysicsMonthly notices of the Royal Astronomical Society
- 20 March 2019
Optical changing-look Active Galactic Nuclei (AGN) are a class of sources that change type within a short time-scale of years or decades. This change is characterized by the appearance or…
K2-260 b: a hot Jupiter transiting an F star, and K2-261 b: a warm Saturn around a bright G star
- M. Johnson, F. Dai, J. Winn
- Physics, GeologyMonthly notices of the Royal Astronomical Society
- 15 June 2018
We present the discovery and confirmation of two new transiting giant planets from the Kepler extended mission K2. K2-260 b is a hot Jupiter transiting a V = 12.7 F6V star in K2 Field 13, with a mass…
The black hole and central stellar population of MCG–6-30-15
- S. Raimundo, R. Davies, P. Gandhi, A. Fabian, R. Canning, V. Ivanov
- Physics
- 20 February 2013
We present the first near-infrared integral field spectroscopy observations of the galaxy MCG--6-30-15. The H-band data studied in this paper cover the central 500 pc of the galaxy at the best…
Radiation pressure, absorption and AGN feedback in the Chandra Deep Fields
- S. Raimundo, A. Fabian, Y. Xue
- Physics
- 23 June 2010
The presence of absorbing gas around the central engine of active galactic nuclei (AGN) is a common feature of these objects. Recent work has looked at the effect of the dust component of the gas,…
A catalogue of optical to X-ray spectral energy distributions of z ≈ 2 quasars observed with Swift – I. First results
- D. Lawther, M. Vestergaard, S. Raimundo, D. Grupe
- Physics
- 17 February 2017
Danish Council for Independent Research via grant [DFF 4002-00275]; Alfred P. Sloan Foundation; National Science Foundation; U.S. Department of Energy Office of Science
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