Long XMM observation of the narrow-line Seyfert 1 galaxy IRAS 13224-3809: Rapid variability, high spin and a soft lag

A. C. Fabian; E. Kara; D. J. Walton; D. R. Wilkins; R. R. Ross; K. Lozanov; P. Uttley; L. C. Gallo; A. Zoghbi; G. Miniutti; T. Boller; W. N. Brandt; E. M. Cackett; C. Y. Chiang; T. Dwelly; J. Malzac; J. M. Miller; E. Nardini; G. Ponti; R. C. Reis; C. S. Reynolds; J. F. Steiner; Y. Tanaka; A. J. Young

doi:10.1093/mnras/sts504

Long XMM observation of the narrow-line Seyfert 1 galaxy IRAS 13224-3809: Rapid variability, high spin and a soft lag

A. C. Fabian
, E. Kara
, D. J. Walton
, D. R. Wilkins
, R. R. Ross
, K. Lozanov
, P. Uttley
, L. C. Gallo
, A. Zoghbi
, G. Miniutti
, T. Boller
, W. N. Brandt
, E. M. Cackett
, C. Y. Chiang
, T. Dwelly
, J. Malzac
, J. M. Miller
, E. Nardini
, G. Ponti
, R. C. Reis

C. S. Reynolds, J. F. Steiner, Y. Tanaka, A. J. Young

Research output: Contribution to journal › Article › peer-review

110 Scopus citations

Abstract

The narrow-line Seyfert 1 galaxy IRAS 13224-3809 has been observed withXMM-Newton for 500 ks. The source is rapidly variable on time-scales down to a few 100 s. The spectrum shows strong broad Fe - K and L emission features which are interpreted as arising from reflection from the inner parts of an accretion disc around a rapidly spinning black hole. Assuming a power law emissivity for the reflected flux and that the innermost radius corresponds to the innermost stable circular orbit, the black hole spin is measured to be 0.989 with a statistical precision better than 1 per cent. Systematic uncertainties are discussed. A soft X-ray lag of 100 s confirms this scenario. The bulk of the power-law continuum source is located at a radius of 2-3 gravitational radii.

Original language	English (US)
Pages (from-to)	2917-2923
Number of pages	7
Journal	Monthly Notices of the Royal Astronomical Society
Volume	429
Issue number	4
DOIs	https://doi.org/10.1093/mnras/sts504
State	Published - Mar 11 2013

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnras/sts504

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Fabian, A. C., Kara, E., Walton, D. J., Wilkins, D. R., Ross, R. R., Lozanov, K., Uttley, P., Gallo, L. C., Zoghbi, A., Miniutti, G., Boller, T., Brandt, W. N., Cackett, E. M., Chiang, C. Y., Dwelly, T., Malzac, J., Miller, J. M., Nardini, E., Ponti, G., ... Young, A. J. (2013). Long XMM observation of the narrow-line Seyfert 1 galaxy IRAS 13224-3809: Rapid variability, high spin and a soft lag. Monthly Notices of the Royal Astronomical Society, 429(4), 2917-2923. https://doi.org/10.1093/mnras/sts504

@article{1b0e7411c29448ce82741ecf8e677e91,

title = "Long XMM observation of the narrow-line Seyfert 1 galaxy IRAS 13224-3809: Rapid variability, high spin and a soft lag",

abstract = "The narrow-line Seyfert 1 galaxy IRAS 13224-3809 has been observed withXMM-Newton for 500 ks. The source is rapidly variable on time-scales down to a few 100 s. The spectrum shows strong broad Fe - K and L emission features which are interpreted as arising from reflection from the inner parts of an accretion disc around a rapidly spinning black hole. Assuming a power law emissivity for the reflected flux and that the innermost radius corresponds to the innermost stable circular orbit, the black hole spin is measured to be 0.989 with a statistical precision better than 1 per cent. Systematic uncertainties are discussed. A soft X-ray lag of 100 s confirms this scenario. The bulk of the power-law continuum source is located at a radius of 2-3 gravitational radii.",

author = "Fabian, \{A. C.\} and E. Kara and Walton, \{D. J.\} and Wilkins, \{D. R.\} and Ross, \{R. R.\} and K. Lozanov and P. Uttley and Gallo, \{L. C.\} and A. Zoghbi and G. Miniutti and T. Boller and Brandt, \{W. N.\} and Cackett, \{E. M.\} and Chiang, \{C. Y.\} and T. Dwelly and J. Malzac and Miller, \{J. M.\} and E. Nardini and G. Ponti and Reis, \{R. C.\} and Reynolds, \{C. S.\} and Steiner, \{J. F.\} and Y. Tanaka and Young, \{A. J.\}",

year = "2013",

month = mar,

day = "11",

doi = "10.1093/mnras/sts504",

language = "English (US)",

volume = "429",

pages = "2917--2923",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

Fabian, AC, Kara, E, Walton, DJ, Wilkins, DR, Ross, RR, Lozanov, K, Uttley, P, Gallo, LC, Zoghbi, A, Miniutti, G, Boller, T, Brandt, WN, Cackett, EM, Chiang, CY, Dwelly, T, Malzac, J, Miller, JM, Nardini, E, Ponti, G, Reis, RC, Reynolds, CS, Steiner, JF, Tanaka, Y & Young, AJ 2013, 'Long XMM observation of the narrow-line Seyfert 1 galaxy IRAS 13224-3809: Rapid variability, high spin and a soft lag', Monthly Notices of the Royal Astronomical Society, vol. 429, no. 4, pp. 2917-2923. https://doi.org/10.1093/mnras/sts504

TY - JOUR

T1 - Long XMM observation of the narrow-line Seyfert 1 galaxy IRAS 13224-3809

T2 - Rapid variability, high spin and a soft lag

AU - Fabian, A. C.

AU - Kara, E.

AU - Walton, D. J.

AU - Wilkins, D. R.

AU - Ross, R. R.

AU - Lozanov, K.

AU - Uttley, P.

AU - Gallo, L. C.

AU - Zoghbi, A.

AU - Miniutti, G.

AU - Boller, T.

AU - Brandt, W. N.

AU - Cackett, E. M.

AU - Chiang, C. Y.

AU - Dwelly, T.

AU - Malzac, J.

AU - Miller, J. M.

AU - Nardini, E.

AU - Ponti, G.

AU - Reis, R. C.

AU - Reynolds, C. S.

AU - Steiner, J. F.

AU - Tanaka, Y.

AU - Young, A. J.

PY - 2013/3/11

Y1 - 2013/3/11

N2 - The narrow-line Seyfert 1 galaxy IRAS 13224-3809 has been observed withXMM-Newton for 500 ks. The source is rapidly variable on time-scales down to a few 100 s. The spectrum shows strong broad Fe - K and L emission features which are interpreted as arising from reflection from the inner parts of an accretion disc around a rapidly spinning black hole. Assuming a power law emissivity for the reflected flux and that the innermost radius corresponds to the innermost stable circular orbit, the black hole spin is measured to be 0.989 with a statistical precision better than 1 per cent. Systematic uncertainties are discussed. A soft X-ray lag of 100 s confirms this scenario. The bulk of the power-law continuum source is located at a radius of 2-3 gravitational radii.

AB - The narrow-line Seyfert 1 galaxy IRAS 13224-3809 has been observed withXMM-Newton for 500 ks. The source is rapidly variable on time-scales down to a few 100 s. The spectrum shows strong broad Fe - K and L emission features which are interpreted as arising from reflection from the inner parts of an accretion disc around a rapidly spinning black hole. Assuming a power law emissivity for the reflected flux and that the innermost radius corresponds to the innermost stable circular orbit, the black hole spin is measured to be 0.989 with a statistical precision better than 1 per cent. Systematic uncertainties are discussed. A soft X-ray lag of 100 s confirms this scenario. The bulk of the power-law continuum source is located at a radius of 2-3 gravitational radii.

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UR - https://www.scopus.com/pages/publications/84874169819#tab=citedBy

U2 - 10.1093/mnras/sts504

DO - 10.1093/mnras/sts504

M3 - Article

AN - SCOPUS:84874169819

SN - 0035-8711

VL - 429

SP - 2917

EP - 2923

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

Long XMM observation of the narrow-line Seyfert 1 galaxy IRAS 13224-3809: Rapid variability, high spin and a soft lag

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