SUMMARY OF PROPOSAL 41132 DR MAKOTO TASHIRO UNIVERSITY OF TOKYO TOKYO JAPAN 113 BUNKYO-KU 7-3-1 HONGO E-mail: TASHIRO@MIRANDA.PHYS.S.U-TOKYO.AC.JP Tel: 03-3812-2111 EX.4171 Fax: 03-3812-6938 Medium: 4GBDAT Subject: AGN Title: THE SUPERLUMINAL MOTION BL LAC OBJECT PKS 0735+178 Abstract: We propose to observe the BL Lac object PKS 0735+178, aiming to study physical state in its cosmical jet. This object is well observed in many wavelengths including GeV bands with the EGRET instrument onboard CGRO. Since ASCA bands would cover the connective region between synchrotron and its self-Comptonized components, it is expected to determine the ratio of two components. In addition, short time variability was also reported by Madejski with Einstein, which suggests the possibility to detect synchrotron soft-lagged variation to determine its magnetic field. Therefore, the source is expected to study magnetic field, electron density and doppler factor of the jet. Reported superluimnal motion will also be helpful to determine inclination and speed of the jet. Co-Is: 1 KAZUO MAKISHIMA UNIVERSITY OF TOKYO JAPAN MAXIMA@MIRANDA.PHYS.S.U-TOKYO.AC.JP 03-3812-2111 EX.4171 2 ERIKO IDESAWA UNIVERSITY OF TOKYO JAPAN 3 NAOKO IYOMOTO UNIVERSITY OF TOKYO JAPAN 4 NOBUYUKI KAWAI RIKEN JAPAN 5 TADAYUKI TAKAHASHI ISAS JAPAN 6 AKIKO YAMASHITA ISAS JAPAN 7 TARO KOTANI ISAS JAPAN Target Name PRI RA Dec Time TC Off GIS SIS_Cts Obs ------------------- --- -------- -------- ---- -- --- --- ------- --- PKS 0735+178 1 114.5308 17.7053 40 N Y P 1.00000 1 REMARKS: THIS SOURCE IS VARIABLE. THE COUNTRATE IS EXPECTED BETWEEN 0.2 AND 1 HZ FOR EACH SIS SENSOR.