Spectral Variability of the Nucleus of M33 in aChandra/ACIS Observation | Zendy

V. La Parola | Zendy; F. Damiani | Zendy; G. Fabbiano | Zendy; G. Pérès | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Spectral Variability of the Nucleus of M33 in aChandra/ACIS Observation

Author(s) -

V. La Parola,

F. Damiani,

G. Fabbiano,

G. Pérès

Publication year - 2003

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 - 10.1086/345505

Subject(s) - physics , astrophysics , acis , flux (metallurgy) , black hole (networking) , nucleus , power law , spectral shape analysis , amplitude , spectral line , astronomy , optics , chemistry , computer network , routing protocol , routing (electronic design automation) , statistics , mathematics , computer science , biology , link state routing protocol , microbiology and biotechnology , organic chemistry

We have analyzed a 90 ksec long observation of the bright nucleus of M33 madewith Chandra/ACIS. We detected low-amplitude (~sim10%) highly significantvariability on timescales of ~5000 sec. We also find associated spectralvariability. The two main spectral components (a power-law with \Gamma~2 and amulticolor disk -MCD- with kT~0.9-1.2 keV) vary in relative flux. The MCDtemperature also increases with increasing MCD flux. The pattern of variabilityis reminiscent of (but not identical to) galactic black hole binaries. A ~5M$_{\odot}$ accreting black hole may explain this source.Comment: Accepted for publication on The Astrophysical Journal. 14 pages, 5 figure

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