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A model of the broad-band continuum of NGC 5548

Magdziarz, P
Blaes, Omer M

Publication date

October 1997

Abstract

We discuss a model of the central source in Seyfert 1 galaxy NGC 5548. The model assumes a three phase disk structure consisting of a cold outer disk, a hot central disk constituting a Comptonizing X/gamma source, and an intermediate unstable and complex phase emitting a soft excess component. The model qualitatively explains broad-band spectrum and variability behavior assuming that the soft excess contributes significantly to the continuum emission and drives variability by geometrical changes of the intermediate disk zone

Extracted data

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Steenbrugge, K. C.
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Schwarzenberg-Czerny, A
Loska, Z

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Anatomy of the AGN in NGC 5548 I. A global model for the broadband spectral energy distribution

M. Mehdipour1, 2
Kaastra, J. S.
Kriss, G. A.
Cappi, M.
Petrucci, P. O.
Steenbrugge, K. C.
Arav, N.
Behar, E.
BIANCHI, STEFANO
Boissay, R.
Branduardi Raymont, G.
Costantini, E.
Ebrero, J.
Gesu, L. Di
Harrison, F. A.
Kaspi, S.
Marco, B. De
MATT, Giorgio
Paltani, S.
Peterson, B. M.
Ponti, G.
Nuñez, F. Pozo
Rosa, A. De
URSINI, FRANCESCO
Vries, C. P. de
Walton, D. J.
Whewell, M.

January 2015

An extensive multi-satellite campaign on NGC 5548 has revealed this archetypal Seyfert-1 galaxy to b...

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Vestergaard, M.

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M. Mehdipour
J. S. Kaastra
G. A. Kriss
M. Cappi
P.-O. Petrucci
B. De Marco
G. Ponti
K. C. Steenbrugge
E. Behar
S. Bianchi
G. Branduardi-Raymont
E. Costantini
J. Ebrero
L. Di Gesu
G. Matt
S. Paltani
B. M. Peterson
F. Ursini
M. Whewell

April 2016

We present our investigation into the long-term variability of the X-ray obscuration and optical-UV-...

Anatomy of the AGN in NGC 5548. VII. Swift study of obscuration and broadband continuum variability

Mehdipour, M.
Kaastra, J. S.
Kriss, G. A.
Cappi, M.
Petrucci, P. -O.
de Marco, B.
Ponti, G.
Steenbrugge, K. C.
Behar, E.
Bianchi, S.
Branduardi-Raymont, G.
Costantini, E.
Ebrero, J.
Di Gesu, L.
Matt, G.
Paltani, S.
Peterson, B. M.
Ursini, F.
Whewell, M.

January 2016

International audienceWe present our investigation into the long-term variability of the X-ray obscu...

Space Telescope and Optical Reverberation Mapping Project: VIII: Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum

Kriss, G.A.
Silva, C.
Brown, J. S.
Brown, J.S.
Costantini, E.
Gupta, A.
King, A.
Uttley, P.

August 2019

We model the ultraviolet spectra of the Seyfert 1 galaxy NGC 5548 obtained with the Hubble Space Tel...

Space telescope and optical reverberation mapping project. VIII. Time variability of emission and absorption in NGC 5548 based on modeling the ultraviolet spectrum

August 2019

We model the ultraviolet spectra of the Seyfert 1 galaxy NGC 5548 obtained with the Hubble Space Tel...

Anatomy of the AGN in NGC 5548: I. A global model for the broadband spectral energy distribution

Mehdipour, M
Kaastra, JS
Kriss, GA
Cappi, M
Petrucci, P-O
Steenbrugge, KC
Arav, N
Behar, E
Bianchi, S
Boissay, R
Branduardi-Raymont, G
Costantini, E
Ebrero, J
Gesu, LD
Harrison, FA
Kaspi, S
Marco, BD
Matt, G
Paltani, S
Peterson, BM
Ponti, G
Nuñez, FP
Rosa, AD
Ursini, F
Vries, CPD
Walton, DJ
Whewell, M

March 2015

An extensive multi-satellite campaign on NGC 5548 has revealed this archetypal Seyfert-1 galaxy to b...

Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC5548 Based on Modeling the Ultraviolet Spectrum

Kriss, G. A.
De Rosa, G.
Ely, J.
Peterson, B. M.
Bennert, Vardha Nicola
Zu, Y.

August 2019

We model the ultraviolet spectra of the Seyfert 1 galaxy NGC 5548 obtained with the Hubble Space Tel...

Anatomy of the AGN in NGC 5548: VII. Swift study of obscuration and broadband continuum variability

Mehdipour, M.
Kaastra, J. S.
Kriss, G. A.
Cappi, M.
Petrucci, P. O.
De Marco, B.
Ponti, G.
Steenbrugge, K. C.
Behar, E.
Branduardi Raymont, G.
Costantini, E.
Ebrero, J.
Di Gesu, L.
Paltani, S.
Peterson, B. M.
Whewell, M.
BIANCHI, STEFANO
MATT, Giorgio
URSINI, FRANCESCO

January 2016

We present our investigation into the long-term variability of the X-ray obscuration and optical-UV-...

Using Multiwavelength Observations to Determine the Black Hole Mass and Accretion Rate in the Type 1 Seyfert Galaxy NGC 5548

Chiang, J
Blaes, Omer M

November 2002

We model the spectral energy distribution of the type 1 Seyfert galaxy NGC 5548, fitting data from s...

Anatomy of the AGN in NGC 5548 I. A global model for the broadband spectral energy distribution

Mehdipour, M.
Harrison, F. A.
Walton, D. J.

March 2015

An extensive multi-satellite campaign on NGC 5548 has revealed this archetypal Seyfert-1 galaxy to b...

Steps toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XVI. A 13 Year Study of Spectral Variability in NGC 5548

December 2002

We present the final installment of an intensive 13 year study of variations of the optical continuu...

Space Telescope and Optical Reverberation Mapping Project. VI.:reverberating disk models for NGC 5548

January 2017

We conduct a multiwavelength continuum variability study of the Seyfert 1 galaxy NGC 5548 to investi...

Dynamics of Broad Emission‐Line Region in NGC 5548: Hydromagnetic Wind Model versus Observations

Bottorff, Mark
Korista, Kirk T.
Shlosman, Isaac
Blandford, Roger D.

April 1997

We analyze the results of long-term observations of the broad-line region (BLR) in the Seyfert 1 gal...

Power density spectrum of NGC 5548 and the nature of its variability

Czerny, B
Schwarzenberg-Czerny, A
Loska, Z

October 1998

We derive power density spectra in the optical and X-ray band in the timescale range from several ye...