The Seyfert 2 galaxy NGC 2110: hard X-ray emission observed by NuSTAR and variability of the iron Kα line

A. Marinucci; G. Matt; S. Bianchi; T. N. Lu; P. Arevalo; M. Balokovic; D. Ballantyne; F. E. Bauer; S. E. Boggs; Finn Erland Christensen

doi:10.1093/mnras/stu2439

The Seyfert 2 galaxy NGC 2110: hard X-ray emission observed by NuSTAR and variability of the iron Kα line

A. Marinucci, G. Matt, S. Bianchi, T. N. Lu, P. Arevalo, M. Balokovic, D. Ballantyne, F. E. Bauer, S. E. Boggs, Finn Erland Christensen

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Abstract

We present NuSTAR observations of the bright Seyfert 2 galaxy NGC 2110 obtained in 2012, when the source was at the highest flux level ever observed, and in 2013, when the source was at a more typical flux level. We include archival observations from other X-ray satellites, namely XMM-Newton, Suzaku, BeppoSAX, Chandra and Swift. Simultaneous NuSTAR and Swift broad-band spectra (in the 3-80 keV range) indicate a cutoff energy E_c> 210 keV, with no detectable contribution from Compton reflection. NGC 2110 is one of the very few sources where no evidence for distant Compton-thick scattering is found and, by using temporal information collected over more than a decade, we investigate variations of the iron Kα line on time-scales of years. The Fe K alpha line is likely the sum of two components: one constant (originating from distant Compton-thick material) and the other one variable and linearly correlated with the source flux (possibly arising from Compton-thin material much closer to the black hole).

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society
Volume	447
Issue number	1
Pages (from-to)	160-167
ISSN	0035-8711
DOIs	https://doi.org/10.1093/mnras/stu2439
Publication status	Published - 2015

Keywords

Galaxies: active
Galaxies: individual: NGC 2110
Galaxies: Seyfert

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10.1093/mnras/stu2439

MNRAS 2015 Marinucci 160 7Final published version, 825 KB

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title = "The Seyfert 2 galaxy NGC 2110: hard X-ray emission observed by NuSTAR and variability of the iron Kα line",

abstract = "We present NuSTAR observations of the bright Seyfert 2 galaxy NGC 2110 obtained in 2012, when the source was at the highest flux level ever observed, and in 2013, when the source was at a more typical flux level. We include archival observations from other X-ray satellites, namely XMM-Newton, Suzaku, BeppoSAX, Chandra and Swift. Simultaneous NuSTAR and Swift broad-band spectra (in the 3-80 keV range) indicate a cutoff energy Ec > 210 keV, with no detectable contribution from Compton reflection. NGC 2110 is one of the very few sources where no evidence for distant Compton-thick scattering is found and, by using temporal information collected over more than a decade, we investigate variations of the iron Kα line on time-scales of years. The Fe K alpha line is likely the sum of two components: one constant (originating from distant Compton-thick material) and the other one variable and linearly correlated with the source flux (possibly arising from Compton-thin material much closer to the black hole).",

keywords = "Galaxies: active, Galaxies: individual: NGC 2110, Galaxies: Seyfert",

author = "A. Marinucci and G. Matt and S. Bianchi and Lu, {T. N.} and P. Arevalo and M. Balokovic and D. Ballantyne and Bauer, {F. E.} and Boggs, {S. E.} and Christensen, {Finn Erland}",

year = "2015",

doi = "10.1093/mnras/stu2439",

language = "English",

volume = "447",

pages = "160--167",

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

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TY - JOUR

T1 - The Seyfert 2 galaxy NGC 2110: hard X-ray emission observed by NuSTAR and variability of the iron Kα line

AU - Marinucci, A.

AU - Matt, G.

AU - Bianchi, S.

AU - Lu, T. N.

AU - Arevalo, P.

AU - Balokovic, M.

AU - Ballantyne, D.

AU - Bauer, F. E.

AU - Boggs, S. E.

AU - Christensen, Finn Erland

PY - 2015

Y1 - 2015

N2 - We present NuSTAR observations of the bright Seyfert 2 galaxy NGC 2110 obtained in 2012, when the source was at the highest flux level ever observed, and in 2013, when the source was at a more typical flux level. We include archival observations from other X-ray satellites, namely XMM-Newton, Suzaku, BeppoSAX, Chandra and Swift. Simultaneous NuSTAR and Swift broad-band spectra (in the 3-80 keV range) indicate a cutoff energy Ec > 210 keV, with no detectable contribution from Compton reflection. NGC 2110 is one of the very few sources where no evidence for distant Compton-thick scattering is found and, by using temporal information collected over more than a decade, we investigate variations of the iron Kα line on time-scales of years. The Fe K alpha line is likely the sum of two components: one constant (originating from distant Compton-thick material) and the other one variable and linearly correlated with the source flux (possibly arising from Compton-thin material much closer to the black hole).

AB - We present NuSTAR observations of the bright Seyfert 2 galaxy NGC 2110 obtained in 2012, when the source was at the highest flux level ever observed, and in 2013, when the source was at a more typical flux level. We include archival observations from other X-ray satellites, namely XMM-Newton, Suzaku, BeppoSAX, Chandra and Swift. Simultaneous NuSTAR and Swift broad-band spectra (in the 3-80 keV range) indicate a cutoff energy Ec > 210 keV, with no detectable contribution from Compton reflection. NGC 2110 is one of the very few sources where no evidence for distant Compton-thick scattering is found and, by using temporal information collected over more than a decade, we investigate variations of the iron Kα line on time-scales of years. The Fe K alpha line is likely the sum of two components: one constant (originating from distant Compton-thick material) and the other one variable and linearly correlated with the source flux (possibly arising from Compton-thin material much closer to the black hole).

KW - Galaxies: active

KW - Galaxies: individual: NGC 2110

KW - Galaxies: Seyfert

U2 - 10.1093/mnras/stu2439

DO - 10.1093/mnras/stu2439

M3 - Journal article

SN - 0035-8711

VL - 447

SP - 160

EP - 167

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

The Seyfert 2 galaxy NGC 2110: hard X-ray emission observed by NuSTAR and variability of the iron Kα line

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Keywords

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