Name of the Speaker(s):Michael Schubnell
Institution: University of Michigan
Title of the communication: Multiwaveband Observations of the Blazar Markarian 421
Preliminary abstract (12 lines max.): The BL Lac object Markarian 421 will be monitored by XTE during an extensive multiwaveband campaign over a period of 36 days in March and April 1996. The correlation between the X-ray and high-energy emission was indicated by the recent observation of a strong outburst from Mrk 421 with the ASCA satellite and the Whipple gamma-ray telescope in April 1995. The XTE observations of Mrk 421 during spring 1996 emphasize on narrowly spaced pointing intervals which will allow to measure day-scale variability over a reasonably long period. Mrk 421 will be observed on average eight times per day during the 5 week program. This campaign will, in conjunction with observations at other wavelengths (UV, optical), provide an excellent opportunity to study correlated emission from this object.