Timescales Trips to PG Quasars : The Mkn 478 Case(Session 7 : NLS1, a Mile Stone)

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概要

• 論文の詳細を見る

• The X-ray bright PG quasar PG 1440+356 (Mkn 478) was observed four times across 13 months with the XMM-Newton observatory. Flux variations with a dynamical range of a factor about 6 were observed in both the soft (E < 1 keV) and the hard (E > 3 keV) X-ray band. However, large spectral variations are observed in the latter band only. We suggest that the X-ray emission in this object is due to Comptonization of kT ≃ 60 eV disk photons by a 20-50 keV plasma with a complex density structure. Analysis of the harmonic content of Mkn 478 light curves unveils a characteristic timescale 〜1 day, common to both energy bands. A longer (〜months) timescale is detected in the soft X-ray band only.

• 2004-11-15

著者

• Guainazzi Matteo

  Xmm Science Operation Center

• Guainazzi Matteo

  Xmm-newton Soc Vilspa

• LOISEAU Nora

  XMM-Newton SOC, VILSPA

• MATT Giorgio

  Universita degli Studi Roma Tre

• ORR Astrid

  RSSD of ESA, ESTEC

• Loiseau Nora

  Xmm-newton Soc Vilspa

• Orr Astrid

  Rssd Of Esa Estec

• MATT Giorgio

  Dipartimento di Fisica, Universita degli Studi "Roma Tre"

• GUAINAZZI Matteo

  XMM-Newton SOC, VILSPA

関連論文

• Relativistic Iron Features from X-Ray Illuminated Spots and the Measure of the Black Hole Mass in AGN(Poster)
• Timescales Trips to PG Quasars : The Mkn 478 Case(Session 7 : NLS1, a Mile Stone)
• Timescales Trips to PG Quasars : The Mkn 478 Case(Session 7 : NLS1, a Mile Stone)
• Relativistic Iron Features from X-Ray Illuminated Spots and the Measure of the Black Hole Mass in AGN(Poster)

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