title: Grs 1915+105: a superluminal source in the Galaxy.
abstract: We present the results of additional observations of the high energy source GRS 1915+105, which produces ejecta with apparent superluminal motions. The observations reported here were carried out with the Very Large Array at 3.5 cm and 20 cm. The 3.5-cm observations made during 1994 May allowed us to continue following the proper motions of the bright 1994 March 19 ejecta, as well as those of a subsequent, fainter ejection. The proper motions of the 1994 March 19 ejecta continued to be ballistic (i.e., constant) over the period of about 75 days where they remained detectable. From the observations in 1994 March-May we have identified three ejections of pairs of plasma clouds moving ballistically in approximately the same direction on the sky with similar proper motions. The 20-cm observations made during 1994 November and December were used to search, yet unsuccessfully, for extended jets or lobes associated with GRS 1915+105.
authors.affiliation: Instituto de Astronomía, Universidad Nacional Autónoma de México, Distrito Federal, México.
authors.forename: L F
authors.initials: LF
authors.lastname: Rodríguez
authors.forename: I F
authors.initials: IF
authors.lastname: Mirabel