Abstract
3 mm λ VLBI observations of the extremely flat spectrum QSO NRAO 530 at the peak of its brightest recorded flare show a resolved core only slightly changed from its pre-outburst state. Observations with Haystack, Kitt Peak and Owens Valley observatories in April 1994, prior to the onset of the flare found a single component with T b = 8 × 1010 K. One year later, within one week of the peak of flare at 3 mm λ, observations with Haystack, Kitt Peak and Hat Creek observatories revealed a component comparable in size and flux density with T b = 7 × 1010 K. Table 1 details the source models for the two experiments.
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© 1996 International Astronomical Union
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Bower, G.C., Backer, D., Forster, R., Wright, M. (1996). A Dramatic (and Invisible!) Flare in NRAO 530. In: Ekers, R., Fanti, C., Padrielli, L. (eds) Extragalactic Radio Sources. International Astronomical Union, vol 175. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0295-4_5
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DOI: https://doi.org/10.1007/978-94-009-0295-4_5
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