Title
Midinfrared interferometry of AGN cores: VLTI/MIDI observations of 15 galaxies,Used
Delivery time: 8-12 business days (International)
Active Galactic Nuclei, the most luminous objects in the universe, are classified into a number of types and subtypes. Unified models of AGNs explain some of this variety as a result of different viewing angles with respect to a dusty absorbing "torus". The spatial resolution necessary to resolve it is currently only provided by the Very Large Telescope Interferometer in Chile. In this thesis a detailed treatment of the observing method is given, with special emphasis on the observation of relatively faint sources. It is followed by the reports on three research projects. First, extensive observations of the radio galaxy Centaurus A are examined that show an extended structure, which is probably connected to the Northern nuclear radio jet. Secondly, a study of the brightest socalled type 1 AGN reveals for the first time a resolved nuclear emitter in such a source. Finally, the sofar most comprehensive study of resolved nuclear dust emission of AGNs is set up to study 13 AGNs of various luminosities L and distances. The first full analysis of this study shows in all but one galaxy that tori can be resolved and that their size on parsec scales is not simply proportional to L^(0.5).
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Shipping & Returns
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We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.