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CGRO Biweekly Status Report
Compton Observatory Science Report #173, Friday December 23, 1994
Chris Shrader, Compton Observatory Science Support Center
Questions or comments can be sent to the CGRO SSC.
e-mail: NSI_DECnet: GROSSC::SHRADER
On behalf of the CGRO project: Have a great holiday season!
Guest Investigator Program
The schedule for CGRO Cycle-5 proposal submission has been finalized.
The NRA (NRA 95-OSS-01) will officially released on January 11, 1995.
Proposals will be due on April 7, 1995. The NRA will be distributed
by NASA HQ, and the appendices will be distributed by the CGRO-SSC.
The appendices will also be available electronically from the SSC -
for information on how to retrieve them see GRONEWS (login as GRONEWS
on grossc.gsfc.nasa.gov) or on the World Wide Web
(URL: http://cossc.gsfc.nasa.gov/cossc/cossc.html). Not all of the
figures will be included on the electronic copies.
The sceond announcement for the forthcoming Third Compton Symposium
has been issued by the host insitution, the Max Planck Insitute. A copy is
appended to this report. It is also available on GRONEWS, etc.
EGRET operations were normal this biweekly period. Delivery of data
to the GRO SSC remains on schedule. Interaction with guest
investigators continues at a good level.
Work is nearing completion on several summary papers that should be
submitted to journals shortly. The deep survey of the Virgo region
continues; the results of this survey should add significantly to our
knowledge of AGN's, including their time histories and luminosity
There will be several talks on EGRET results at the forthcoming
American Astronomical Meeting.
On day 94/350 (16 Dec), OSSE detector #1 failed to step in response
to the automatic motor drive positioning process that, in normal
operation, moves the detectors every 2 minutes. The positioning
process detected the failure and brought the detector off line.
Three hours later, we stepped the motor with ground commands and
brought the detector back on line without any difficulty. It has
operated normally since that time. This is the first time since
launch that a detector has missed a step, and it is unrelated to the
occasional periods of noise in the redundant positioning readout
pots. We are still analyzing possible causes, one of which is a
single bit upset in the control software.
In viewing period 406 (13-20 Dec), the Z-axis target was NGC 5506
(Guest Investigator J. Piro), and the X-axis target was PSR J1706-44
(Guest Investigator J. Cordes). During the short period each orbit
when neither target is visible, the additional targets are NGC 4151
and NGC 7582. In viewing period 407 (20 Dec - 3 Jan), the Z-axis
target is NGC 5506 (Guest Investigator J. Piro), and the X-axis
target is the galactic plane near (l,b) = (350,0) (PI team),
including a limited amount of time on the X-ray nova GRO J1655-40
during apparently the tail end of its current outburst.
Data from viewing periods 302.0, 302.3, and 303.0 were delivered to
the Compton GRO Science Support Center archive this week. The
targets during these viewing periods were N Cyg 1992, NGC 5548, GX
1+4, GRS 1009-45, and a portion of the Virgo Sky Survey.
The COMPTEL instrument is performing well and continues routine
observations. Data analysis and interpretation continues with
alacrity, despite equally vigorous team preparation for the forth-
coming holiday season!
No transient sources are currently being detected by BATSE Earth
The following sources were detected by the BATSE pulsed source
monitor in the past two weeks: Her X-1, Cen X-3, 4U 1626-67, 2S
1417-624, GX 1+4, Vela X-1, and GX 301-2. The outburst of 2S 1417-624
which ended on December 19th, lasted 115 days. The x-ray binary GX
1+4 is still spinning up.
As of December 19th, BATSE has detected 1186 cosmic gamma-ray bursts
out of a total of 3209 on-board triggers in 1336 days of operation.
There have been 741 triggers due to solar flares with emission above
60 keV. Since the BATSE burst trigger criteria were changed on
September 19th, there have been 13 triggers due to terrestrial
3rd Compton Symposium
on Gamma-Ray Astronomy and
June 12 - 14, 1995
Hosted by the
Max-Planck-Institut fur extraterrestrische Physik
D-85740 Garching, Germany
Call for Papers
The Third International Compton Symposium on Gamma-Ray Astronomy and
Astrophysics will be held at the "GASTEIG" in Munich, from June 12
to 14, 1995, and is being organized by the Max-Planck-Institut fur
extraterrestrische Physik. The "GASTEIG" is located near the center
This second circular contains information on the scientific program,
on conference logistics, and on deadlines concerning the submission
If you have not registered until now, please don't hesitate to
contact us via E-mail immediately.
LOCAL ORGANIZING COMMITTEE
G. Kanbach (Chair)
H. Haber (Secretariat)
C. Fichtel J. Ryan
G. Fishman R. Schlickeiser
N. Gehrels V. Schoenfelder (Chair)
J. Grindlay R. Staubert
G. Kanbach J. Trümper
J. Kurfess G. Vedrenne
E. Lorenz J.H. Völk
The format established during the previous Compton Symposia will
generally be followed in the programme of this conference. A mixture
of invited reviews, contributed talks and poster presentations will
cover the current state of observational and theoretical gamma-ray
astro- nomy. Topics pertaining to solar emissions and gamma-ray
bursts will only be summarized in invited reviews; attention is
drawn to special conferences for these subjects.The pre- liminary
programme includes the following topics:
OVERVIEWS of the results from the 4 CGRO instruments.
SUMMARIES on gamma-ray bursts and solar gamma-ray emissions.
GALACTIC ASTRONOMY: Pulsars, X-ray binaries and other energetic
novae, supernova remnants, molecular clouds, unidentified
galactic gamma-ray sources,
interstellar medium, cosmic rays and galactic structure, nucleosynthesis.
EXTRAGALACTIC ASTRONOMY: Nearby normal galaxies, active galactic nuclei,
Seyferts and blazars, high galactic latitude unidentified sources,
cosmic gamma-ray background.
FUTURE REQUIREMENTS and instrumentation for gamma-ray astronomy.
So far, 18 invited talks of 30 minutes duration and 36 contributed
talks of 15 minutes each are scheduled. The number of POSTER
presentations is unlimited.
Solar Flares with Gamma-Ray Emission
Gamma-Ray Burst Theory
Stellar Black Hole Candidates
The Galactic Center
Nucleosynthesis and Gamma-Ray Line Astrophysics
Gamma-Ray Lines from Interstellar Particle Interactions
Diffuse Galactic X- and Gamma-Ray Continuum
Galactic Structure and Unidentified Galactic Sources
measured by EGRET
Models of X / g-Ray Emission from Seyfert Galaxies
Models of High-Energy Emission from Quasars
VLBl and Multiwavelength Studies of Gamma-Ray AGN
The X- and g-Ray Background
The Early Days of Gamma-Ray Astronomy
* Speaker to be confirmed
CALL FOR CONTRIBUTED PAPERS
Abstracts should be submitted no later than March 31, 1995.
They should contain author(s) and their affiliation, title and max.
200 words of text. Indicate your preference for oral or poster
Submission by e-mail is encouraged in ASCII format. Hardcopies may
be mailed to the conference secretariat using the attached form.
Authors will be notified of acceptance and allocation of papers to
sessions and poster/oral presentations by April 15, 1995
PROCEEDINGS & FEES
The Conference Proceedings will be published in a special issue of
Astronomy & Astro-
The Registration and Conference Fee, including a copy of the
conference proceedings per participant, is DM 400.-, if paid before
April 30, 1995. Late registration fee will be DM 450,-.
Payment should be made by money transfer to :
Max-Planck-Institut fur extraterrestrische Physik
Account No.: 29 400 36
Bankhaus Reuschel & Co., Munchen, Germany
Bank Code : 700 303 00.
Please indicate your payment, with date of money transfer, on the
enclosed registration form.
Refund of registration fees is possible with a deduction of DM 35,-.
Cancellation must be received in written form at the conference
secretariat by May
20, 1995, by E-mail : CGRO95@mpe-Garching.mpg.de, or by FAX:
March 31, 1995: Deadline for abstracts of invited and contributed
April 15, 1995: Third Circular with preliminary programme.
Notification of acceptance and allocation of
April 30, 1995: Deadline for booking at PENTA Hotel at reduced
Deadline for reduced conference fee.
Deadline for revised abstracts.
June 12-14, 1995: Symposium
The "Gasteig" is located close to the center of downtown Munich, near
the "Deutsches Museum" and across the street from the Penta Hotel. It
houses the Munich Symphony Hall and several large auditoria for
cultural events. The Symposium will take place in the Carl-Orff-
Auditorium, which seats about 400 persons. Secretariat, posters,
lounges and refreshments
will be located in the lobby outside the lecture hall.
A block reservation at the nearby "Penta Hotel" has been made for
participants of the Sym- posium. The prices will be 150 DM (for
single room) or 175 DM (for double room), including breakfast
buffet. Booking should be made directly with the hotel, not later
than May 1, 1995 (a form sheet is enclosed).
'Compton Symposium' c/o Ms. M. Metzner
Hochstrasse 3, D-81669 Munchen, Germany
Phone: +49 (0)89 4803 - 0
Fax : +49 (0)89 4 48 82 77
There will be a no host WELCOMING RECEPTION in the evening before
ing on June 11, 1995 at the Penta Hotel at 7:00 p.m. The registration
office will be
opened on June 11 at 4:00 p.m. in the lobby of the Penta Hotel.
THE DINNER BANQUET is planned for June 13, 1995 in the Aircraft
Exhibition Hall of the Deutsches Museum, Museumsinsel 1, within
walking distance of the Penta Hotel and Gasteig. The dinner ticket
per person will be 50,- DM.
TRANSPORTATION is not required during the conference due to the
short distance between the locations.
To reach the hotel from the airport or main train station use the
S-Bahn trains to sta- tion Rosenheimer Platz. The hotel is about 100
m from the station. The S8 line from the airport terminal runs every
20 minutes and the journey takes about 30 minutes. Tickets are
available in the terminal from a machine. From the main train station
(Hauptbahnhof) take any S-Bahn in the direction Ostbahnhof.
You will receive a map with public transport and city information
with the Third Circular.
The secretariat for the 3rd Compton Symposium is located at the
Max-Planck-Institut fur extraterrestrische Physik
TELEPHONE: +49-(0)89-3299-3332, Ms. Haber, secretary
-3544, Dr. G. Kanbach (LOC)
-3578, Dr. V. Schoenfelder (SOC)
FAX: -3569 (attn. Ms. H. Haber)
E-MAIL: cgro95@mpe-garching. mpg.de
We use E-mail communication as much as possible and have set up an
anonymous ftp where you can obtain copies of circulars, forms and
other material and a WWW page for information. Please use the
following procedure to reach these facilities:
>ftp cgro95.mpe-garching mpg.de
Password: your E-mail address
World Wide Web home page:
End of returned message