The Suzaku broad-band spectrum of the low-luminosity AGN M81 Lucie - PowerPoint PPT Presentation

Dec 09, 2022 •23 likes •93 views

The Suzaku broad-band spectrum of the low-luminosity AGN M81 Lucie Gerard (APC - France) Sara Turrizziana (Tor Vergata - Italy) Ivona Mochol (Cracovia Univ. - Poland) Filippo DAmmando (INAF Roma - Italy) Kei Saitou (ISAS - Japan) Renzo

The Suzaku broad-band spectrum of the low-luminosity AGN M81 Lucie Gerard (APC - France) Sara Turrizziana (Tor Vergata - Italy) Ivona Mochol (Cracovia Univ. - Poland) Filippo D’Ammando (INAF Roma - Italy) Kei Saitou (ISAS - Japan) Renzo Capelli (IASF Mi - Italy) Lorenzo Raimondi (IASF Bo - Italy) Massimo Cappi (IASF Bo - Italy)
Open Issue: Understand the origin of High Energy Emission of M81 (the brigthest Nearby LLAGN) Current Knowledge: Complex FeK line structure from BeppoSAX, XMM and Chandra (HETGs) Current possible physical models: i) Reflection (neutral and ionized); ii) Thermal emission (from a hot gas); iii) Photoionization Goal of the present program: Analyse the Suzaku spectrum of the source to discriminate between the three above possibilities
The Suzaku observation: M81 ULX  M81 was observed in 2006, May 8th  Exposure Time: 100 ks  XIS0,1,2,3 working nominally (at that time) Backg  A ULX in the FOV
Suzaku Broad-band spectrum of M81 Γ ~1.8-1.9 Flux (2-10)~1x10 -11 erg cm -2 s -1 Suzaku Broad-band spectrum of ULX :Convex spectrum…
Zooming and fitting the line…
Fitting the line…with Chi-2 and C- statistics !!!
EW (eV) Flux 2-10 keV 6.4 6.7 6.9 10 -11 (cgs) (keV) (keV) (keV) XMM 27-52 34-60 22-52 1.1 BEPPO-SAX _ 64-133 _ 3.8 CHANDRA 22-71 5-54 71-163 1.0 SUZAKU 35-56 40-63 22-47 1.1

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