1E1740.7-2942
We propose 100 ksec observation of the microquasar 1E 1740.7--2942 to reveal an existence of Doppler-shifted emission lines originating from ionized heavy elements in relativistic jets with XRISM/Resolve. This microquasar is persistent X-ray source with steady bipolar radio jets in the Galaxy Centre region. Previous Chandra/HETGS observation in 1999 suggested a possible narrow Doppler-shifted emission lines originating from jets. Through high resolution X-ray spectroscopy with XRISM, we will clarify whether the jet plasma is really hadronic origin and could make 1E 1740.7--2942 the second jet source which shows a direct evidence for hadron acceleration in jets after SS433.
obsid = 201057010 / Unique Observation/Sequence Number
object = 1E1740.7-2942 / Object name
pi_name = YAMAOKA KAZUTAKA / Proposal Principal Investigator Name
ra = 265.977947117321 / Right Ascension (Pointing Position) (deg)
dec = -29.7445842869775 / Declination (Pointing Position) (deg)
roll_angle = 89.7605935241704 / Roll Angle (deg)
start_time = 2025-02-25T13:16:04 / Start Time of the Observation
stop_time = 2025-02-27T23:16:04 / Stop Time of the Observation
exposure = 129446.27768 / Effective Total Observation Exposure (s)
public_date= 2026-03-11 / Public Date