Variation of the broad X-ray iron line inMCG-6-30-15 during a flare

K. Iwasawa; A. C. Fabian; A. J. Young; H. Inoue; C. Matsumoto

doi:10.1046/j.1365-8711.1999.02671.x

Variation of the broad X-ray iron line inMCG-6-30-15 during a flare

K. Iwasawa^*, A. C. Fabian, A. J. Young, H. Inoue, C. Matsumoto

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

We report results on the broad iron emission line of the Seyfert galaxy MCG-6-30-15, obtained from the second long ASCA observation in 1997. The time-averaged profile of the broad line is very similar to that seen with ASCA in 1994, so confirming the detailed model fit then obtained. A bright flare is seen in the light curve, during which the continuum was soft. At that time the emission line peaks around 5 keV and most of its emission is shifted below 6 keV with no component detected at 6.4 keV (EW < 60eV). This can be interpreted as the result of an extraordinarily large gravitational redshift owing to a dominant flare occurring very close to the black hole at a radius of ≲5r_g.

Original language	English
Pages (from-to)	L19-L24
Number of pages	6
Journal	Monthly Notices of the Royal Astronomical Society
Volume	306
Issue number	1
DOIs	https://doi.org/10.1046/j.1365-8711.1999.02671.x
Publication status	Published - 11 Jun 1999

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@article{a390b8bb44f245dfa83940a54a87e977,

title = "Variation of the broad X-ray iron line inMCG-6-30-15 during a flare",

abstract = "We report results on the broad iron emission line of the Seyfert galaxy MCG-6-30-15, obtained from the second long ASCA observation in 1997. The time-averaged profile of the broad line is very similar to that seen with ASCA in 1994, so confirming the detailed model fit then obtained. A bright flare is seen in the light curve, during which the continuum was soft. At that time the emission line peaks around 5 keV and most of its emission is shifted below 6 keV with no component detected at 6.4 keV (EW < 60eV). This can be interpreted as the result of an extraordinarily large gravitational redshift owing to a dominant flare occurring very close to the black hole at a radius of ≲5rg.",

author = "K. Iwasawa and Fabian, \{A. C.\} and Young, \{A. J.\} and H. Inoue and C. Matsumoto",

year = "1999",

month = jun,

day = "11",

doi = "10.1046/j.1365-8711.1999.02671.x",

language = "English",

volume = "306",

pages = "L19--L24",

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

issn = "0035-8711",

publisher = "Oxford University Press",

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}

TY - JOUR

T1 - Variation of the broad X-ray iron line inMCG-6-30-15 during a flare

AU - Iwasawa, K.

AU - Fabian, A. C.

AU - Young, A. J.

AU - Inoue, H.

AU - Matsumoto, C.

PY - 1999/6/11

Y1 - 1999/6/11

N2 - We report results on the broad iron emission line of the Seyfert galaxy MCG-6-30-15, obtained from the second long ASCA observation in 1997. The time-averaged profile of the broad line is very similar to that seen with ASCA in 1994, so confirming the detailed model fit then obtained. A bright flare is seen in the light curve, during which the continuum was soft. At that time the emission line peaks around 5 keV and most of its emission is shifted below 6 keV with no component detected at 6.4 keV (EW < 60eV). This can be interpreted as the result of an extraordinarily large gravitational redshift owing to a dominant flare occurring very close to the black hole at a radius of ≲5rg.

AB - We report results on the broad iron emission line of the Seyfert galaxy MCG-6-30-15, obtained from the second long ASCA observation in 1997. The time-averaged profile of the broad line is very similar to that seen with ASCA in 1994, so confirming the detailed model fit then obtained. A bright flare is seen in the light curve, during which the continuum was soft. At that time the emission line peaks around 5 keV and most of its emission is shifted below 6 keV with no component detected at 6.4 keV (EW < 60eV). This can be interpreted as the result of an extraordinarily large gravitational redshift owing to a dominant flare occurring very close to the black hole at a radius of ≲5rg.

U2 - 10.1046/j.1365-8711.1999.02671.x

DO - 10.1046/j.1365-8711.1999.02671.x

M3 - Article (Academic Journal)

SN - 0035-8711

VL - 306

SP - L19-L24

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

Variation of the broad X-ray iron line inMCG-6-30-15 during a flare

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