Multiwavelength View of the Inner Spiral of NGC 1365

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dc.creatorStrateva, I. V.
dc.creatorKomossa, S.
dc.date2009-03-09
dc.date2009-03-10
dc.date.accessioned2026-07-07T12:50:27Z
dc.date.available2026-07-07T12:50:27Z
dc.descriptionWe study the extended nuclear emission of the starburst galaxy NGC 1365. A weak obscured AGN and a strong starburst both contribute to the observed X-ray, optical, infrared, and radio emission in the inner 2kpc. The X-ray emission is spatially resolved, allowing comparison with multiwavelength data that highlights the structures dominating the nuclear region: the AGN, the nuclear spiral, the circumnuclear starburst ring, and nuclear outflow. The ultrasoft X-ray emission below 0.5keV is spatially coincident with the conical outflow traced by higher excitation optical emission lines like [O III] and [Ne III]. The strong starburst concentrated in super-star clusters in a circumnuclear ring with radius ~1kpc dominates the 0.5-1.5keV emission and is visible in radio, molecular CO, and infrared maps of the central kiloparsec. The hard (2-10keV) emission is dominated by the obscured AGN, but also contributes to the emission from relatively old (~7Myr) but still enshrouded in dust and extremely massive (10^7Msun) super-star clusters (Galliano 2008), hidden from view in the optical and soft X-ray bands. In the Appendix we present the X-ray spectroscopy and photometry of BL Lac MS 0331.3-3629, a high-energy peaked BL Lac candidate at z=0.308, serendipitously detected in one Chandra and five XMM-Newton observations of NGC1365.
dc.description15 pages, submitted to MNRASm, typos corrected
dc.identifierhttps://arxiv.org/abs/0903.1548
dc.identifierhttp://arxiv.org/abs/0903.1548
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/222693
dc.subjectHigh Energy Astrophysical Phenomena
dc.subjectAstrophysics of Galaxies
dc.titleMultiwavelength View of the Inner Spiral of NGC 1365
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