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ROSAT Report#124: Second Circular for Wurzburg Meeting




			ROSAT Status Report #124
			    May 25 1995

Contents:

1) Second Circular for the meeting "R"ontgenstrahlung from the Universe"

2) MPE Status Report #37

***************************************************************************

SECOND CIRCULAR   SECOND CIRCULAR   SECOND CIRCULAR   SECOND CIRCULAR   SECOND CIRCULAR   
 
                   R"ontgenstrahlung from the Universe

      An International Conference on X-Ray Astronomy and Astrophysics

                        September 25-29, 1995 
                          W"urzburg, Germany


                         organized jointly by

          Max-Planck Institut f"ur Extraterrestrische Physik
                                and
          Astronomisches Institut der Universit"at W"urzburg

                       Second Circular, May 1995


GENERAL

The conference will be part of the events celebrating the centennial of the
discovery of X-rays by Wilhelm Conrad R"ontgen on November 8, 1895 at the
University of W"urzburg. For this epochal discovery, R"ontgen received the
first Nobel Prize in Physics in 1901.

At the same time the conference will mark the fifth anniversary of the 
launch of ROSAT which was named after R"ontgen and which has produced a 
wealth of new scientific data for a wide scientific community.

The scientific organization of the conference will be a joint effort
of the ROSAT centers located at MPE (Garching), GSFC (Maryland), and the 
University of Leicester. It is a pleasure to invite you to participate in 
the meeting.

Up to now more than 300 colleagues have registered for the conference,
of which 200 made a firm commitment. Please use the registration form in 
the appendix for a firm commitment.


SCIENTIFIC ORGANIZING COMMITTEE (SOC):  

B. Aschenbach               G. Fabbiano
G. Hasinger                 W. Lewin
K. Mason                    H. "Ogelman
R. Petre                    J. Pye       
R. Staubert                 Y. Tanaka    
J. Tr"umper (Chair)         H. Zinnecker     


LOCAL ORGANIZING COMMITTEE (LOC):

W. Brinkmann                W. Pietsch 
T. Preibisch                J. Schmitt
H.W. Yorke                  H.-U. Zimmermann (Chair)
H. Zinnecker

Conference secretariat: Mrs. L. Falke and Mrs. R. Steinle


SCIENTIFIC PROGRAMME

The conference will address the whole field of X-ray astronomy and X-ray
missions, although we anticipate from the titles so far submitted 
that results from the ROSAT Observatory and the ASCA mission will 
dominate the scientific programme.  The program structure foresees 
14 review talks (40 minutes) complemented by about 35 highlight talks
(20 minutes) and about 70 selected talks (15 minutes). Review and 
highlight talks will be given in plenary meetings, while 2 parallel 
sessions in the late afternoon will be organized for the selected talks.

Posters will be displayed in the lobby of the Auditorium Maximum 
of the University of W"urzburg throughout the conference.

The following speakers have already agreed to give review or highlight
talks:

B. Aschenbach, M. Barstow, W. Becker, K. Beuermann, H. B"ohringer, 
S. Bowyer, D. Burrows, J. Caillault, M. Elvis, P. Fabbiano, A. Fabian, 
G. Hasinger, P. Henry, H. Inoue, S. Jordan, K. Koyama, K. Mason, 
F. Mirabel, R. Mushotzsky, F. Nagase, R. Petre, T. Ponman, J. Pye, 
S. Rappaport, J. Schmitt, S. Snowden, R. Sunyaev, R. Supper, Y. Tanaka, 
Y. Uchida, F. Verbunt, H. Waite, H. Zinnecker

The Scientific Organizing Committee will select  other talks from the 
proposed contributions. Every colleague will be informed before the end of 
June whether her/his oral contribution  will be accomodated within the
overall time budget. We strongly recommend that proposed talks that can not 
be given orally are presented as posters. Posters will be also published 
in the proceedings.


CONFERENCE LOCATION

The conference will be held at the Auditorium Maximum of the Neue 
Universit"at W"urzburg, located near to the city center.

Using the Auditorium Maximum relaxes the restrictions we had initially on
the number of participants. 


ABSTRACTS, PAPERS, PROCEEDINGS:

Abstracts of talks and posters should be sent to the Conference Secretariat
by July 22 to be included in the conference abstract booklet. The abstract
should include the title, the authors and their affiliation as well as an
abstract text of no more than 200 words. You will help us strongly by using 
the empty LATEX forms for the abstracts or papers available via the conference
www or ftp access (see paragraph ORGANIZATION).

Talks and poster contributions accepted by the scientific organizing      
committee  will be published in the conference proceedings.


CONFERENCE FEE:

The conference registration fee of DM 150 will include a copy of the
conference proceedings. The fee may be payed directly at the conference 
desk.
 

GENERAL INFORMATION

W"urzburg is located in the middle of Germany, about 100 km east of 
Frankfurt, on the river Main. The capital of Unterfranken (Bavaria) is
a town of about 130 thousand inhabitants and displays many colourful signs 
of its long and eventful history. The magnificent Residenz, the Castle 
Marienberg, beautiful churches and palaces as well as nearby medieval 
villages and castles contribute as much to the specific character of this 
city as the many wine-taverns and the university life.

The city lies at the intersection of major highways and railroad lines. 
By plane you will arrive in Frankfurt and can then proceed to W"urzburg 
via train in about an hour and a half. By car you may follow the Autobahn 
from Frankfurt to N"urnberg and exit at W"urzburg - Heidingsfeld.


SOCIAL EVENTS

For Sunday, September 24, the evening before the conference, 
an informal  'no host' COME TOGETHER at the wine restaurant B"urgerspital
will take place starting at 8 pm. You may have your dinner there and
use the conference desk to pay the registration fee and receive the
conference material.

Monday evening a guided wine tasting in the cellars of the Hofkellerei 
is planned. The cellars, illuminated by candles, belong to the most 
remarkable ones in Europe. Tickets (DM 30) will be available at the 
conference desk. Participation is limited to about 150 people.

For Wednesday afternoon we will organize an excursion to historical sites 
in the surroundings of W"urzburg.

The conference dinner will take place on Thursday evening in the castle
Marienberg. The dinner ticket will be DM 30.


HOTEL ACCOMODATION

For your hotel reservation please use the form enclosed with this circular
(mark 'inner city') and return it to the tourist office in W"urzburg. 
The office will select hotels near to the conference location. Generally 
hotels are booked heavily at this time of the year. Please make your 
hotel reservation therefore as early as possible.


ORGANIZATION

The conference will be organized jointly by the Max-Planck Institut f"ur 
Extraterrestrische Physik and the Astronomisches Institut der Universit"at 
W"urzburg. The conference secretariat resides at Garching.

E-mail:     xray-conf@mpe-garching.mpg.de
Fax:        +49-(0)89-3299 -3569 
mail:       X-Ray Conference Secretariat
            Max-Planck Institut f"ur Extraterrestrische Physik
            Postfach 1603
            85740 Garching
            Germany  
Telephone:  +49-(0)89-3299 -3559 J. Tr"umper (SOC)
                           -3593 U. Zimmermann (LOC)
                           -3805 L. Falke, secretary 
                           -3318 R. Steinle, secretary 

Current information on the program and the organisation is 
available via

World Wide Web:
http://rosat_svc.mpe-garching.mpg.de/xray-conf/  

or

anonymous ftp:
> ftp  rosat_svc.mpe-garching.mpg.de  (user: anonymous  no password)
> cd general/xray-conf
> get contents.doc
> get ...
> quit


RELEVANT DATES

SOC selects talks until                    June 30, 1995
deadline for abstracts                     July 22, 1995
3rd Circular (final programme)             August 1995
conference                                 September 25 to 29, 1995
deadline for proceedings                   November 30, 1995


=============================================================================

                          Registration Form
       (please fill in only if you have not yet firmly registered)

                  R"ontgenstrahlung from the Universe

     An International Conference on X-ray Astronomy and Astrophysics

                25-29 September 1995, W"urzburg, Germany
-----------------------------------------------------------------------------
                                                       please use block letters

Name:             ................................................
First Name:       ................................................
Title:            ................................................
Institution:      ................................................
Address:          ................................................
                  ................................................
                  ................................................
                  ................................................

E-mail:           ................................................
Fax:              ................................................
Telephone:        ................................................

Preferred communication mode is e-mail.

Number of accompanying persons        ......

I will contribute a              talk ....    poster   ...

The SOC will accommodate as many talks as possible.

Title of contribution

  ..................................................................
  ..................................................................
  ..................................................................

We will confirm your participation and contribution.
----------------------------------------------------------------------------
Please return this form as soon as possible to us.

 per email:        xray-conf@mpe-garching.mpg.de       
 per FAX:          089-3299-3569
 per letter:       X-Ray Conference Secretariat
                   MPI f"ur Extraterrestrische Physik
                   Postfach 1603
                   85740 Garching
                   Germany
============================================================================  
===============================================================================
                          Hotel Reservation Form

          International Conference on X-Ray Astronomy and Astrophysics

                    Ro"ntgenstrahlung from the Universe

                 25-29 September 1995, Wu"rzburg, Germany

                      Deadline: August 14, 1995
--------------------------------------------------------------------------------
I hereby reserve 

.......... single room(s)           .......... double room(s)
--------------------------------------------------------------------------------
Location of the accommodation

... inner city                ... city             ... suburbs
--------------------------------------------------------------------------------
PRICE including breakfast         single               double
--------------------------------------------------------------------------------
Room with bath/shower/WC      ... from DM 90.-     ... from DM 130.-
--------------------------------------------------------------------------------
Room with bath/shower/WC      ... from DM 130.-    ... from DM 180.-
--------------------------------------------------------------------------------
Room with bath/shower/WC      ... from DM 180.-    ... from DM 250.-
--------------------------------------------------------------------------------
Date of arrival                   for                  night(s)
--------------------------------------------------------------------------------
Approx. time of arrival                         by car/train
--------------------------------------------------------------------------------
Date                              Signature
--------------------------------------------------------------------------------
SENDER (print letters)
--------------------------------------------------------------------------------
Company
--------------------------------------------------------------------------------
Ms/Mr
--------------------------------------------------------------------------------
Street
--------------------------------------------------------------------------------
Zip code                          City
--------------------------------------------------------------------------------
Phone
--------------------------------------------------------------------------------
     With regard to conventions you are asked to meet the deadline
--------------------------------------------------------------------------------
In case of room reservations the Tourist Office only proceeds as an agent.
Your request should arrive at the office early enough to allow us to accommodate 
you and send you a reply (about one week).
--------------------------------------------------------------------------------
For your reservation the tourist office charges you DM 5.- which you will 
have to pay with your hotel bill.
--------------------------------------------------------------------------------
Please return this form to:

Congress & Tourismus Zentrale
Am Congress Centrum
D-97070 W"urzburg
Germany
=============================================================================== 



        Max-Planck-Institut f"ur Extraterrestrische Physik
                        Code 'XRAY-CONF95'
            Bankhaus Reuschel & Co., M"unchen, Germany              
                    Account No.: 29 400 36
                    Bank Code: 700 303 00

Refunding of the registration fee is possible with a deduction of DM 35.
In such case the conference secretariat has to (must, should) be informed 
about your cancellation in written form through either mail, email or FAX 
by September 1. 

              
**************************************************************************
=========================================================================
=                                                                       =
=              ROSAT NEWS No. 37   ---      1-Apr-1995                  =
=                                                                       =
=-----------------------------------------------------------------------=
=                 ROSAT Scientific Data Center at the                   =
=       Max-Planck-Institut fuer Extraterrestrische Physik (MPE)        =
=               Postfach 1603, D-85740 Garching, Germany                =
=-----------------------------------------------------------------------=
=  e-mail addresses (Uli Zimmermann):                                   =
=   rosat_svc@mpe-garching.mpg.de (Internet) or  MPE::ROSAT_SVC (SPAN)  =
=  ROSAT Service Area (including ROSAT Data Archive):                   =
=   ftp rosat_svc.mpe-garching.mpg.de      user: anonymous              =
=   WWW address:  http://rosat_svc.mpe-garching.mpg.de/                 =
=   interactive account (including ROSAT Result Archive):               =
=     telnet xray.mpe-garching.mpg.de  user: xray  no password          =
=-----------------------------------------------------------------------=
=  XUV Center: 29382::GXUVDC or  GXUVDC@AIT.PHYSIK.UNI-TUEBINGEN.DE     =
=   WFC Archive access via telnet/ftp ait.physik.uni-tuebingen.de       =
=                                user: xuv  (password: xuv_archive)     =
=========================================================================

Contents:  ROSAT AO - 6
           SPECTRAL CALIBRATION of the PSPC
           WGA CATALOG  UPDATE
           NEW WFC SOURCE CATALOG (POINTED PHASE) and CALIBRATION ISSUES
           EXSAS - PATCH


ROSAT AO - 6
============
The ROSAT Service Area (directory general) contains some AO-6 related 
info and a LATEX version of the required proposal form. 

Information on the sky fields already observed by ROSAT or in the
scheduling list until October 1995 can be looked at in directory 
'timeline' in the ROSAT Service Area. The file 'master_obs.list'
lists all observations that have been processed by SASS. The files 
'ao5_hri1.summary' for the first half of AO-5 and ao5_hri2.summary  
for the second half cover the recent and future timeline scheduling. 
In addition the file data_by_rascen.txt (directory archive) contain 
also older TOOs (target of opportunity observations before 1994) and 
observations from the early CV (Calibration and Verification) Phase. 

An updated HRI Report (February 1995) is available via www:
http://heasarc.gsfc.nasa.gov/docs/rosat/rosgof.html.

An updated WFC report for AO-6 may be accessed via www:
http://ledas-ftp.star.le.ac.uk/rosat/ao6/


SPECTRAL CALIBRATION of the PSPC
================================
The SASS PSPC data processing software corrects for time and spatial
variations in the detector gain as part of the conversion from detected
pulse height to pulse invariant channels. Analysis of the in-flight AlK
calibration data has shown that there is an error in the spatial gain
correction currently applied in SASS, and also that there are uncalibrated
effects which need to be considered, requiring some additional correction
based on detector coordinates and arrival time (DETX, DETY, and TIME) of
each event. The AlK data allow us to construct a gain map which can be
used to correct the calibrated pulseheight data.  Whether or not the 
required correction is pulse-height dependent is not known, and will 
require considerably more work to determine. The corrections are in the 
order of a few percent.

Information on the present status is given in a new memo, entitled 
"Status of the PSPC Spatial/Temporal Gain Calibration" by Snowden, Turner, 
George, Yusaf, Predehl and Prieto. It is available in html and postscript 
formats via the World Wide Web from 
http://heasarc.gsfc.nasa.gov/docs/heasarc/caldb/docs/summary/
cal_ros_95_003_summary.html or in latex and postscript formats from the
legacy.gsfc anonymous ftp account under /caldb/docs/rosat/cal_ros_95_003/.


WGA CATALOG  UPDATE
===================
A new version of the WGA source catalog includes various corrections
(especially of the source positions) and additional observations
recently released to the ROSAT Data Archive (RDA). For details see
http://heasarc.gsfc.nasa.gov/~white/wgacat/rev1.html (www).


NEW WFC SOURCE CATALOG (POINTED PHASE) and WFC CALIBRATION ISSUES
=================================================================
Work on a ROSAT/WFC Pointed Phase Source Catalogue based on the 
processing of the ROSAT/WFC data performed in Tuebingen has recently 
been completed (Kreysing, Brunner, Staubert, 1995, submitted to A&A 
Supp.). The catalogue covers all pointed ROSAT/WFC observations from the 
time period June 20th, 1990 to July 15th, 1995. It lists 1016 individual 
detections, corresponding to 321 detected sources. A continuously updated 
version of the catalogue is kept on the public WFC archive account in 
Tuebingen (login procedure: see header of newsletter).

A subset of 242 observations of non-variable White Dwarfs from this 
catalogue which were observed repeatedly (both in the ROSAT/WFC All Sky 
Survey and/or during the pointed phase) were used to calibrate the temporal 
change of the WFC efficiencies. From a simultaneous fit to all available 
data points the degradation history of the effective areas for the S1 and 
S2 filters has been reconstructed and compared to the values from the most 
recent WFC Master Calibration File (MCF-12) issued September 1993 by the 
UK Data Centre. Details on the improved calibration may be found in the 
above mentioned paper that can be found in the xuv_archive (access see email 
header).


EXSAS - PATCH
=============
A patch for the EXSAS 95JAN version will be available in the next days.

====================== end of ROSAT NEWS ================================