Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites
We present the results of the analysis of X-ray properties of the Seyfert 2 galaxy NGC 3281, based on the observational data obtained by XMM-Newton and INTEGRAL within the energy ranges 0.2-12 keV and 20-150 keV, respectively. The XMM-Newton spectrum of this object is presented for the first time. W...
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| Дата: | 2013 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
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Головна астрономічна обсерваторія НАН України
2013
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| Назва видання: | Advances in Astronomy and Space Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/119649 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites / A.A. Vasylenko, E. Fedorova, V.I. Zhdanov // Advances in Astronomy and Space Physics. — 2013. — Т. 3., вип. 2. — С. 120-125. — Бібліогр.: 18 назв. — англ. |
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irk-123456789-1196492017-06-08T03:06:48Z Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites Vasylenko, A.A. Fedorova, E. Zhdanov, V.I. We present the results of the analysis of X-ray properties of the Seyfert 2 galaxy NGC 3281, based on the observational data obtained by XMM-Newton and INTEGRAL within the energy ranges 0.2-12 keV and 20-150 keV, respectively. The XMM-Newton spectrum of this object is presented for the first time. We show that fitting the X-ray spectrum of this galaxy with models based on the reflection from the disc with infinite column density yields non-physical results. A more appropriate fit takes into account both transmitted and reflected emission, passed through a gas-dust torus-like structure. Keeping this in mind, to model the inhomogeneous clumpy torus, we used the MYTorus model. Hence, we conclude that the torus of NGC 3281 is not a continuous structure, but rather consists of separate clouds, which is in a good agreement with the results of near-IR observations. Using this assumption, we found that the torus inclination angle and the hydrogen column density are 66.98⁺²˙⁶³ ₋₁.₃₄ degrees and 2.08⁺⁰˙³⁵₋₀.₁₈ × 10²⁴ cm⁻², respectively. Also, emissions of hot diffuse gases with temperature ∼ 590 eV, and warm absorption, were detected. 2013 Article Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites / A.A. Vasylenko, E. Fedorova, V.I. Zhdanov // Advances in Astronomy and Space Physics. — 2013. — Т. 3., вип. 2. — С. 120-125. — Бібліогр.: 18 назв. — англ. 2227-1481 http://dspace.nbuv.gov.ua/handle/123456789/119649 en Advances in Astronomy and Space Physics Головна астрономічна обсерваторія НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
We present the results of the analysis of X-ray properties of the Seyfert 2 galaxy NGC 3281, based on the observational data obtained by XMM-Newton and INTEGRAL within the energy ranges 0.2-12 keV and 20-150 keV, respectively. The XMM-Newton spectrum of this object is presented for the first time. We show that fitting the X-ray spectrum of this galaxy with models based on the reflection from the disc with infinite column density yields non-physical results. A more appropriate fit takes into account both transmitted and reflected emission, passed through a gas-dust torus-like structure. Keeping this in mind, to model the inhomogeneous clumpy torus, we used the MYTorus model. Hence, we conclude that the torus of NGC 3281 is not a continuous structure, but rather consists of separate clouds, which is in a good agreement with the results of near-IR observations. Using this assumption, we found that the torus inclination angle and the hydrogen column density are 66.98⁺²˙⁶³ ₋₁.₃₄ degrees and 2.08⁺⁰˙³⁵₋₀.₁₈ × 10²⁴ cm⁻², respectively. Also, emissions of hot diffuse gases with temperature ∼ 590 eV, and warm absorption, were detected. |
| format |
Article |
| author |
Vasylenko, A.A. Fedorova, E. Zhdanov, V.I. |
| spellingShingle |
Vasylenko, A.A. Fedorova, E. Zhdanov, V.I. Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites Advances in Astronomy and Space Physics |
| author_facet |
Vasylenko, A.A. Fedorova, E. Zhdanov, V.I. |
| author_sort |
Vasylenko, A.A. |
| title |
Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites |
| title_short |
Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites |
| title_full |
Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites |
| title_fullStr |
Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites |
| title_full_unstemmed |
Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites |
| title_sort |
observations of sy2 galaxy ngc 3281 by xmm-newton and integral satellites |
| publisher |
Головна астрономічна обсерваторія НАН України |
| publishDate |
2013 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/119649 |
| citation_txt |
Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites / A.A. Vasylenko, E. Fedorova, V.I. Zhdanov // Advances in Astronomy and Space Physics. — 2013. — Т. 3., вип. 2. — С. 120-125. — Бібліогр.: 18 назв. — англ. |
| series |
Advances in Astronomy and Space Physics |
| work_keys_str_mv |
AT vasylenkoaa observationsofsy2galaxyngc3281byxmmnewtonandintegralsatellites AT fedorovae observationsofsy2galaxyngc3281byxmmnewtonandintegralsatellites AT zhdanovvi observationsofsy2galaxyngc3281byxmmnewtonandintegralsatellites |
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2023-10-18T20:35:05Z |
| last_indexed |
2023-10-18T20:35:05Z |
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