Ni Abundance in the Core of the Perseus Cluster: An Answer to the Significance of Resonant Scattering | Zendy

F. Gastaldello | Zendy; S. Molendi | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Ni Abundance in the Core of the Perseus Cluster: An Answer to the Significance of Resonant Scattering

Author(s) -

F. Gastaldello,

S. Molendi

Publication year - 2004

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/379970

Subject(s) - physics , scattering , cluster (spacecraft) , astrophysics , core (optical fiber) , flux (metallurgy) , turbulence , nickel , abundance (ecology) , atomic physics , optics , chemistry , meteorology , computer science , biology , programming language , organic chemistry , fishery

Using an XMM-Newton observation of the Perseus cluster we show that theexcess in the flux of the 7-8 keV line complex previously detected by ASCA andBeppoSAX is due to an overabundance of Nickel rather than to an anomalouslyhigh Fe He$\beta$/Fe He$\alpha$ ratio. This observational fact leads to themain result that resonant scattering, which was assumed to be responsible forthe supposed anomalous Fe He$\beta$/Fe He$\alpha$ ratio, is no longer required.The absence of resonant scattering points towards the presence of significantgas motions (either turbulent or laminar) in the core of the Perseus cluster.Comment: 29 pages, 10 bw figures, accepted for publication in the Astrophysical Journa

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research