The long Suzaku observation of MCG-6-30-15

Giovanni Miniutti; Andrew C. Fabian; Jamie Crummy; Josefin Larsson; Naohisa Anabuki; Yasushi Fukazawa; Luigi C. Gallo; Yoshito Haba; Kiyoshi Hayashida; Steve Holt; Hideyo Kunieda; Alex Makowitz; Chiho Matsumoto; Masanori Ohno; James N. Reeves; Tadayuki Takahashi; Yasuo Tanaka; Yuichi Terashima; Ken'ichi Torii; Yoshihiro Ueda; Masayoshi Ushio; Shin Watanabe; Makoto Yamauchi; Tahir Yaqoob

doi:10.1143/PTPS.169.260

The long Suzaku observation of MCG-6-30-15

Giovanni Miniutti, Andrew C. Fabian, Jamie Crummy, Josefin Larsson, Naohisa Anabuki, Yasushi Fukazawa, Luigi C. Gallo, Yoshito Haba, Kiyoshi Hayashida, Steve Holt, Hideyo Kunieda, Alex Makowitz, Chiho Matsumoto, Masanori Ohno, James N. Reeves, Tadayuki Takahashi, Yasuo Tanaka, Yuichi Terashima, Ken'ichi Torii, Yoshihiro UedaMasayoshi Ushio, Shin Watanabe, Makoto Yamauchi, Tahir Yaqoob

School of Physics and Astronomy

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

Abstract

We report results from a long observation of MCG-6-30-15 with Suzaku. Thanks to its unprecedented sensitivity in the hard band, we could, for the first time, investigate the hard X-ray variability of the source. The variability in the HXD/PIN 14-45 keV band (dominated by a strong reflection hump) is suppressed relative to that at a few keV. This directly demonstrates that the whole reflection spectrum is much less variable than the power-law continuum. The broadband spectral variability can be decomposed into two components - a highly variable power-law and constant reflection - as previously inferred from other observations in the 2-10 keV band. The strong reflection and high iron abundance give rise to a strong broad iron line, which requires the inner disc radius to be at about 2 gravitational radii, confirming that MCG-6-30-15 most likely harbours a rapidly spinning Kerr black hole.

Original language	English
Pages (from-to)	260-264
Number of pages	5
Journal	Progress of Theoretical Physics Supplement
DOIs	https://doi.org/10.1143/PTPS.169.260
Publication status	Published - 2007

Keywords

GALAXY MCG-6-30-15
BLACK-HOLE
IRON LINE
EMISSION
HARD
BROAD

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Miniutti, G., Fabian, A. C., Crummy, J., Larsson, J., Anabuki, N., Fukazawa, Y., Gallo, L. C., Haba, Y., Hayashida, K., Holt, S., Kunieda, H., Makowitz, A., Matsumoto, C., Ohno, M., Reeves, J. N., Takahashi, T., Tanaka, Y., Terashima, Y., Torii, K., ... Yaqoob, T. (2007). The long Suzaku observation of MCG-6-30-15. Progress of Theoretical Physics Supplement, 260-264. https://doi.org/10.1143/PTPS.169.260

@article{e41d770d78334863b98ad96e87ab0fdd,

title = "The long Suzaku observation of MCG-6-30-15",

abstract = "We report results from a long observation of MCG-6-30-15 with Suzaku. Thanks to its unprecedented sensitivity in the hard band, we could, for the first time, investigate the hard X-ray variability of the source. The variability in the HXD/PIN 14-45 keV band (dominated by a strong reflection hump) is suppressed relative to that at a few keV. This directly demonstrates that the whole reflection spectrum is much less variable than the power-law continuum. The broadband spectral variability can be decomposed into two components - a highly variable power-law and constant reflection - as previously inferred from other observations in the 2-10 keV band. The strong reflection and high iron abundance give rise to a strong broad iron line, which requires the inner disc radius to be at about 2 gravitational radii, confirming that MCG-6-30-15 most likely harbours a rapidly spinning Kerr black hole.",

keywords = "GALAXY MCG-6-30-15, BLACK-HOLE, IRON LINE, EMISSION, HARD, BROAD",

author = "Giovanni Miniutti and Fabian, \{Andrew C.\} and Jamie Crummy and Josefin Larsson and Naohisa Anabuki and Yasushi Fukazawa and Gallo, \{Luigi C.\} and Yoshito Haba and Kiyoshi Hayashida and Steve Holt and Hideyo Kunieda and Alex Makowitz and Chiho Matsumoto and Masanori Ohno and Reeves, \{James N.\} and Tadayuki Takahashi and Yasuo Tanaka and Yuichi Terashima and Ken'ichi Torii and Yoshihiro Ueda and Masayoshi Ushio and Shin Watanabe and Makoto Yamauchi and Tahir Yaqoob",

year = "2007",

doi = "10.1143/PTPS.169.260",

language = "English",

pages = "260--264",

journal = "Progress of Theoretical Physics Supplement",

publisher = "Yukawa Institute for Theoretical Physics",

}

Miniutti, G, Fabian, AC, Crummy, J, Larsson, J, Anabuki, N, Fukazawa, Y, Gallo, LC, Haba, Y, Hayashida, K, Holt, S, Kunieda, H, Makowitz, A, Matsumoto, C, Ohno, M, Reeves, JN, Takahashi, T, Tanaka, Y, Terashima, Y, Torii, K, Ueda, Y, Ushio, M, Watanabe, S, Yamauchi, M & Yaqoob, T 2007, 'The long Suzaku observation of MCG-6-30-15', Progress of Theoretical Physics Supplement, pp. 260-264. https://doi.org/10.1143/PTPS.169.260

TY - JOUR

T1 - The long Suzaku observation of MCG-6-30-15

AU - Miniutti, Giovanni

AU - Fabian, Andrew C.

AU - Crummy, Jamie

AU - Larsson, Josefin

AU - Anabuki, Naohisa

AU - Fukazawa, Yasushi

AU - Gallo, Luigi C.

AU - Haba, Yoshito

AU - Hayashida, Kiyoshi

AU - Holt, Steve

AU - Kunieda, Hideyo

AU - Makowitz, Alex

AU - Matsumoto, Chiho

AU - Ohno, Masanori

AU - Reeves, James N.

AU - Takahashi, Tadayuki

AU - Tanaka, Yasuo

AU - Terashima, Yuichi

AU - Torii, Ken'ichi

AU - Ueda, Yoshihiro

AU - Ushio, Masayoshi

AU - Watanabe, Shin

AU - Yamauchi, Makoto

AU - Yaqoob, Tahir

PY - 2007

Y1 - 2007

N2 - We report results from a long observation of MCG-6-30-15 with Suzaku. Thanks to its unprecedented sensitivity in the hard band, we could, for the first time, investigate the hard X-ray variability of the source. The variability in the HXD/PIN 14-45 keV band (dominated by a strong reflection hump) is suppressed relative to that at a few keV. This directly demonstrates that the whole reflection spectrum is much less variable than the power-law continuum. The broadband spectral variability can be decomposed into two components - a highly variable power-law and constant reflection - as previously inferred from other observations in the 2-10 keV band. The strong reflection and high iron abundance give rise to a strong broad iron line, which requires the inner disc radius to be at about 2 gravitational radii, confirming that MCG-6-30-15 most likely harbours a rapidly spinning Kerr black hole.

AB - We report results from a long observation of MCG-6-30-15 with Suzaku. Thanks to its unprecedented sensitivity in the hard band, we could, for the first time, investigate the hard X-ray variability of the source. The variability in the HXD/PIN 14-45 keV band (dominated by a strong reflection hump) is suppressed relative to that at a few keV. This directly demonstrates that the whole reflection spectrum is much less variable than the power-law continuum. The broadband spectral variability can be decomposed into two components - a highly variable power-law and constant reflection - as previously inferred from other observations in the 2-10 keV band. The strong reflection and high iron abundance give rise to a strong broad iron line, which requires the inner disc radius to be at about 2 gravitational radii, confirming that MCG-6-30-15 most likely harbours a rapidly spinning Kerr black hole.

KW - GALAXY MCG-6-30-15

KW - BLACK-HOLE

KW - IRON LINE

KW - EMISSION

KW - HARD

KW - BROAD

UR - https://www.scopus.com/pages/publications/41149158103

U2 - 10.1143/PTPS.169.260

DO - 10.1143/PTPS.169.260

M3 - Article

SP - 260

EP - 264

JO - Progress of Theoretical Physics Supplement

JF - Progress of Theoretical Physics Supplement

ER -

The long Suzaku observation of MCG-6-30-15

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Keywords

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