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Mid-infrared imaging of 25 local AGN with VLT-VISIR
Hannes Horst, Wolfgang J. Duschl, Poshak Gandhi +1
Aims. High angular resolution N-band imaging is used to discern the torus of active galactic nuclei (AGN) from its environment in order to allow a comparison of its mid-infrared pr…
Multiwavelength study of the bright X-ray source population in the interacting galaxies NGC5774/NGC5775
Kajal K. Ghosh, Douglas A. Swartz, Allyn F. Tennant +5
A few nearby interacting galaxies are known that host elevated number of ultraluminous X-ray sources. Here we report the results of a multiwavelength study of the X-ray source popu…
Spectral transitions of an ultraluminous X-ray source, NGC 2403 Source 3
Naoki Isobe, Kazuo Makishima, Hiromitsu Takahashi +8
Suzaku observation of an ultraluminous X-ray source, NGC 2403 Source 3, performed on 2006 March 16--17, is reported. The Suzaku XIS spectrum of Source 3 was described with a multi-…
Multiwavelength spectral and high time resolution observations of SWIFT J1753.5-0127: new activity?
M. Durant, P. Gandhi, T. Shahbaz +2
We have conducted an extensive observational campaign of SWIFT J1753.5-0127 during June 2007 after its bright outburst episode in 2005. We have performed multi-band optical photome…
Suzaku Observations of M82 X-1 : Detection of a Curved Hard X-ray Spectrum
Ryohei Miyawaki, Kazuo Makishima, Shinya Yamada +5
A report is presented on Suzaku observations of the ultra-luminous X-ray source X-1 in the starburst galaxy M82, made three time in 2005 October for an exposure of ~ 30 ks each. Th…
Rapid optical and X-ray timing observations of GX 339-4: flux correlations at the onset of a low/hard state
P. Gandhi, K. Makishima, M. Durant +6
We present the discovery of optical/X-ray flux correlations on rapid timescales in the low/hard state of the Galactic black hole GX 339-4. The source had recently emerged from outb…