2009/01/01 by A. Baldi, W. Forman, C. Jones +10
Physics and Astronomy · #Acis #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Brightness #Cluster (spacecraft) #Corona (planetary geology) #Ejecta #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy cluster #Gamma-ray bursts and supernovae #Optics #Physics #RADIUS #Supernova #Surface brightness #Virgo Cluster #X-ray #astro-ph.CO #astro-ph.HE
paper · pdf · doi:10.1063/1.3293054
published in AIP conference proceedings, 271-274 (American Institute of Physics) · 4 pages, proceeding of the conference "The Monster's Fiery Breath: Feedback in Galaxies, Groups, and Clusters", held in Madison, WI, 1-5 June 2009
openalex publication_date 2009/01/01 · arxiv created 2009/09/16 · arxiv updated 2015/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract. We present Chandra ACIS-I and ACIS-S observations (∼200 ks in total) of the X-ray luminous elliptical galaxy NGC 4636, located in the outskirts of the Virgo cluster. A soft band (0.5-2 keV) image shows the presence of a bright core in the center surrounded by an extended X-ray corona and two pronounced quasi-symmetric, 8 kpc long, arm-like features. Each of this features defines the rim of an ellipsoidal bubble. An additional bubble-like feature, whose northern rim is located ∼ 2 kpc south of the north-eastern arm, is detected as well. We present surface brightness and temperature profiles across the rims of the bubbles, showing that their edges are sharp and characterized by temperature jumps of about 20-25%. Through a comparison of the observed profiles with theoretical shock models, we demonstrate that a scenario where the bubbles were produced by shocks, probably driven by energy deposited off-center by jets, is the most viable explanation to the X-ray morphology observed in the central part of NGC 4636. PACS: 95.85.Nv – 98.52.Lp – 98.54.Cm