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ASCA weekly
Dear ASCA users,
I am sending a revised ASCA observation schedule for the period of
September 17-27. We reduce the Galactic ridge survey (JPN, PI: K. Koyama
Priority-C) for exposure time from 50 ksec to 36 ksec and for pointing number
from 10 to 3. In the room, we install a TOO observation to search for the
4.45-sec Galactic center pulsar, GRO J1750-27.
T. Prince and B. Vaughan reported that they resolved the pulsar from the
nearby transient GRO J1735-27 (RX J1735.9-2726) and confined the position
to 1d x 0.5d error region (90% confidence). We plan to cover the region by
three pointings, each 5 ksec.
F. Nagase
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A S C A WEEKLY OBSERVATION PLAN
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September 17-27, 1995; Revised on September 6
(ISAS contact scientist: T. DOTANI dotani@astro.isas.ac.jp)
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Date MNV Target Tag. Exp. Observation PI or
start name Cat. (ks) Cat. Pri./TC (PPI/Co-PI)
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9/17 15:20 A 539 CG 40 JPN 2/n Fukasawa/Tsuru
9/18 13:40 Theta 1 Tau Star 30 US 3/n R. Stern
9/19 7:10 6.4-keV Island SNR 80 JPN 1/n K. Koyama
9/21 21:20 X1746-371 Bin. 20 US 3/n A. Smale
9/22 10:30 PKS 1749+096 AGN 30 US 3/n M. Urry
9/23 9:00 V566 Oph Star 40 ESJ 2/n J. Pye
9/24 14:50 X1724-308 Bin. 10 MUJ 3/n Grindlay//Kamae
9/25 1:50 Gal. Ridge #1 SNR 12 JPN 3/n K. Koyama
9/25 8:40 GRO J1750-27 #1 Bin. 5 JPN TOO (F. Nagase)
9/25 14:40 GRO J1750-27 #2 Bin. 5 JPN TOO (F. Nagase)
9/25 21:00 GRO J1750-27 #3 Bin. 5 JPN TOO (F. Nagase)
9/26 0:50 Gal. Ridge #2 SNR 12 JPN 3/n K. Koyama
9/26 8:40 Gal. Ridge #3 SNR 12 JPN 3/n K. Koyama
9/26 19:50 ESO 103-G35 AGN 19 USJ 1/n K. Leighly
9/27 8:10 PKS 0521-365 #2 AGN 10 ESJ 1/n B. McBreen
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(Note) Obs. Cat. JPN: Japan time, US: US time, JUS: Japan-US Collaboration,
USJ: US-Japan Collaboration, MJU: Merged Japan-US (PPI=Japan),
MUJ: Merged US-Japan (PPI=US), ESJ: ESA-Japan Program,
MOT: Manager's observatory time