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

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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

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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",

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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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U2 - 10.1093/mnras/sts504

DO - 10.1093/mnras/sts504

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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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