ASCA weekly

[Fumiaki NAGASE <nagase@astro.isas.ac.jp>]

Dear ASCA users,

Based on the RXTE/ASCA collaboration on the observation of X-ray
afterglow of gamma-ray bursts, we have performed an emergent TOO
observation of the GRB 970815 which was directly detected by RXTE
ASM. The ASCA TOO observation was installed between August 18,
16:20 to August 19 21:10, by reducing the Fornax A west observation
(PI: K. Makishima) from 80 ksec to 40 ksec. The unobserved half of the 
Fornax A west will be holded and supplemented in the next window.

At present a half of data collected at KSC (Kagoshima Space Center)
have been under analysis. In the field near repoted region of GRB 
870815, ASCA detected an X-ray source at the position close to the
error box reported from RXTE team (IAUC 6718). The preliminary 
results of ASCA observation is seen on the GCN (Bacodine) network.

F. Nagase 

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A S C A     WEEKLY  OBSERVATION   PLAN
-----------------------------------------------------------------------------
August 9 -19,  1997		ver-3   (97/07/20)
(ISAS contact scientist:  R. FUJIMOTO	(fujimoto@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)
-----------------------------------------------------------------------------
8/10	18:30	IC 4329A #2	AGN	20	US	1/n	G. Madejski

8/11	 8:30	III ZW 77	AGN	40	JUS	2/n	C. Otani

8/12	10:00	4C+73.18	AGN	20	ESJ	2/n	W. Yuan

8/12	23:10	IC 4329A #3	AGN	20	US	1/n	G. Madejski

8/13	13:00	Her X-1 	Bin.	25	MOT	1/Y	ASCA-team
						(XRT low energy PSF cal.)
8/14	 5:00	RCW 86 Back	SNR	50	US	1/n	K. Borkowski

8/15	18:10	IC 4329A #4	AGN	20	US	1/n	G. Madejski

8/16	 8:00	NGC 1132	Gal.	40	MUJ	2/n	A. Zabludoff
								/H. Matsumoto
8/17	12:50	Fornax A west	AGN	40	JPN	2/n	K. Makishima
	
8/18	16:20	GRB 970815	CXB	40	MOT	TOO	ASCA-team

(8/19	21:10	MNV to next target)
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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 (Calibration and maintenance)