ASCA weekly

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

Dear ASCA users,

It was reported from GRO EGRET observations that 3C279 is now  undergoing 
an extremely bright outburst (see below). According to the request of a 
TOO observation of the outburst sent from Ann Wehrle, Professor F. Makino
has proposed to perform an ASCA TOO observation. Since the outburst is 
brightest since 1991 and ASCA visibility of the source is soon gone on
January 30, we decided to install a 20 ksec TOO observation of 3C279 
on January 27 by reducing XY Ari observation (JPN, PI; Ishida) from 80 ksec 
to 60 ksec. The lack of 20 ksec for XY Ari will be supplemented later.

The revised short term schedule is attached below.

F. Nagase

-----------------------------------------------------------------------------
Date: Wed, 24 Jan 96 14:19:42 EST
From: rch@puccini.gsfc.nasa.gov (Bob Hartman)
Subject: 3C 279 gamma flare
Cc: rch@puccini.gsfc.nasa.gov
Status: R

I just want to let all of you know that during the first 5+ days of
the current EGRET observation (16-21 Jan), 3C 279 was quite bright, 
about half the average flux during the June 1991 flare.  Since that 
exceeds the trigger threshold for the ToO extension, a ToO has been 
declared to extend the observation for one additional week, to 6 Feb.

I know many of you have been corresponding already with Ann Wehrle 
about your concurrent 3C 279 observations in other wavelengths.  If 
there are others who would like to join in, please contact Ann
(aew@ipac.caltech.edu) or myself with details.

Regards,
        Bob
----------------------------------------------------------------------------



-----------------------------------------------------------------------------
A S C A     WEEKLY  OBSERVATION   PLAN
-----------------------------------------------------------------------------
January  20Ê - February 1, 1996: 	Ver-Ê3  (revised Jan.25)
(ISAS contact scientist:   T. KII,  kii@astro.isas.ac.jp)
-----------------------------------------------------------------------------
Date	MNV	Target 		Tag. 	Exp.	Observation	PI or 
	start	name  		Cat.	(ks)	Cat.  Pri./TC	 ( PPI/Co-PI)
-----------------------------------------------------------------------------
1/20	 9:00	GRB940217	CXB	40	JPN	1/n	A. Yoshida

1/21	 8:40	CTB1 West	SNR	60	MUJ	1/n	O. Vancura/TBD

1/22	18:20	CTB1 NE		SNR	40	MUJ	1/n	O. Vancura/TBD

1/23	17:50	Abell 1914	CG	40	JPN	1/n	S. Miyoshi

1/24	19:40	3C303 (AO3 suppl) AGN	19	JPN	1/n	H. Inoue

1/25	 8:20	CTA1 Center	SNR	40	MUJ	1/n	P. Slane
								/H. Tsunemi
1/26	 8:10	GX 301-2 NA flare Bin.	30	US	2/Y	S. Pravdo

1/27	 6:50	PKS0208-512 #2	AGN 	10	USJ	2/Y	J. Stacy

1/27	12:50	3C279		AGN	20	JPN	TOO	 (F. Nagase)
								/ASCA-team
1/27	 4:50	XY Ari		CV	60	JPN	1/n	M. Ishida

1/29	17:30	XY Ari (AO3 suppl) CV	6	MUJ	1/n	E. Schlegel
								/M. Ishida
1/29	23:00	SN 1986J	SNR	70	US	1/n	J. Bregman
-----------------------------------------------------------------------------

(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, 
MUE: Merged US-ESJ (PPI=US), MEU: Merged ESJ-US (PPI=ESJ)
MOT: Manager's observatory time