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          Institute: MPI für Kernphysik     Collection: High-Energy Astrophysics     Display Documents

ID: 56174.0, MPI für Kernphysik / High-Energy Astrophysics
Multiwavelength Observations of Strong Flares From the TeV-Blazar 1ES 1959+650
Authors:Krawczynski, H.; Hughes, S.B.; Horan, D.; Aharonian, F.; Aller, M.F.; Aller, H.; Boltwood, P.; Buckley, J.; Coppi, P.; Fossati, G.; Götting, N.; Holder, J.; Horns, D.; Kurtanidze, O.M.; Marscher, A.P.; Nikolashvili, M.; Remillard, R.A.; Sadun, A.; Schröder, M.
Date of Publication (YYYY-MM-DD):2004-01-20
Title of Journal:Astrophysical Journal
Journal Abbrev.:ApJ
Issue / Number:1
Start Page:151
End Page:164
Copyright:The American Astronomical Society. All rights reserved.
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Following the detection of strong TeV gamma-ray flares from the BL Lac object 1ES 1959+650 with the Whipple 10 m Cherenkov telescope on May 16 and 17, 2002, we performed intensive Target of Opportunity (ToO) radio, optical, X-ray and TeV gamma-ray observations from May 18, 2002 to August 14, 2002. Observations with the X-ray telescope RXTE and the Whipple and HEGRA gamma-ray telescopes revealed several strong flares, enabling us to sensitively test the X-ray/gamma-ray flux correlation properties. Although the X-ray and gamma-ray fluxes seemed to be correlated in general, we found an ``orphan'' gamma-ray flare that was not accompanied by an X-ray flare. After describing in detail the radio (UMRAO, VLA), optical (Boltwood, Abastumani), X-ray (RXTE) and gamma-ray (Whipple, HEGRA) light curves and Spectral Energy Distributions (SEDs) we present initial modeling of the SED with a simple Synchrotron Self-Compton (SSC) model. With the addition of another TeV blazar with good broadband data, we consider the set of all TeV blazars to begin to look for a connection of the jet properties to the properties of the central accreting black hole thought to drive the jet. Remarkably, the temporal and spectral X-ray and gamma-ray emission characteristics of TeV blazars are very similar, even though the masses estimates of their central black holes differ by up to one order of magnitude.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group H. J. Völk/High Energy Astrophysics (F. Aharonian)
MPI für Kernphysik/Group W. Hofmann/Experimental High-Energy Astrophysics (M. Panter, G. Hermann)
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