Evolution of Aquila X-1 during the Rising Phase of Its 1998 Outburst
Evolution of Aquila X-1 during the Rising Phase of Its 1998 Outburst
We present results from 16 snapshots of Aquila X-1 with the Rossi X-Ray Timing Explorer during the rising phase of its recent outburst. The observations were carried out at a typical rate of once or twice per day. The source shows interesting spectral evolution during this period. Phenomenologically, it bears …