A longer XMM-Newton look at IZwicky1: physical conditions and variability of the ionized absorbers

E. Costantini; L.C. Gallo; W.N. Brandt; A.C. Fabian; T. Boller

A longer XMM-Newton look at IZwicky1: physical conditions and variability of the ionized absorbers

E. Costantini, L.C. Gallo, W.N. Brandt, A.C. Fabian, T. Boller

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Abstract

We present a spectral analysis of the narrow-line Seyfert 1 galaxy I Zwicky 1, focusing on the characteristics of the ionised absorbers as observed with XMM-Newton in 2005. The outflow velocity of the X-ray low-ionisation absorber is consistent with the outflow of the UV absorber detected in a past Hubble Space Telescope observation. In addition, the ionic column densities of Civ and Nv derived from the X-ray model are consistent with the UV values. This suggests that the low-ionisation outflowing gas may survive for many years, despite large changes in flux, and that there is a tight connection between the X-ray and UV absorbers that can only be confirmed with a simultaneous UV and X-ray observation.

Original language	Undefined/Unknown
Pages (from-to)	873-880
Number of pages	8
Journal	Monthly Notices of the Royal Astronomical Society
Volume	378
Issue number	3
Publication status	Published - 2007

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title = "A longer XMM-Newton look at IZwicky1: physical conditions and variability of the ionized absorbers",

abstract = "We present a spectral analysis of the narrow-line Seyfert 1 galaxy I Zwicky 1, focusing on the characteristics of the ionised absorbers as observed with XMM-Newton in 2005. The outflow velocity of the X-ray low-ionisation absorber is consistent with the outflow of the UV absorber detected in a past Hubble Space Telescope observation. In addition, the ionic column densities of Civ and Nv derived from the X-ray model are consistent with the UV values. This suggests that the low-ionisation outflowing gas may survive for many years, despite large changes in flux, and that there is a tight connection between the X-ray and UV absorbers that can only be confirmed with a simultaneous UV and X-ray observation.",

author = "E. Costantini and L.C. Gallo and W.N. Brandt and A.C. Fabian and T. Boller",

year = "2007",

language = "Undefined/Unknown",

volume = "378",

pages = "873--880",

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

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

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TY - JOUR

T1 - A longer XMM-Newton look at IZwicky1: physical conditions and variability of the ionized absorbers

AU - Costantini, E.

AU - Gallo, L.C.

AU - Brandt, W.N.

AU - Fabian, A.C.

AU - Boller, T.

PY - 2007

Y1 - 2007

N2 - We present a spectral analysis of the narrow-line Seyfert 1 galaxy I Zwicky 1, focusing on the characteristics of the ionised absorbers as observed with XMM-Newton in 2005. The outflow velocity of the X-ray low-ionisation absorber is consistent with the outflow of the UV absorber detected in a past Hubble Space Telescope observation. In addition, the ionic column densities of Civ and Nv derived from the X-ray model are consistent with the UV values. This suggests that the low-ionisation outflowing gas may survive for many years, despite large changes in flux, and that there is a tight connection between the X-ray and UV absorbers that can only be confirmed with a simultaneous UV and X-ray observation.

AB - We present a spectral analysis of the narrow-line Seyfert 1 galaxy I Zwicky 1, focusing on the characteristics of the ionised absorbers as observed with XMM-Newton in 2005. The outflow velocity of the X-ray low-ionisation absorber is consistent with the outflow of the UV absorber detected in a past Hubble Space Telescope observation. In addition, the ionic column densities of Civ and Nv derived from the X-ray model are consistent with the UV values. This suggests that the low-ionisation outflowing gas may survive for many years, despite large changes in flux, and that there is a tight connection between the X-ray and UV absorbers that can only be confirmed with a simultaneous UV and X-ray observation.

M3 - Article

SN - 0035-8711

VL - 378

SP - 873

EP - 880

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -