[Date Prev][Date Next][Thread Prev][Thread Next][Search] [Main Index] [Thread Index] [HEASARC Mailing List Archives]

GSFC XMM-Newton GOF Status Report #172: XMM-NEWTON NEWS #89

To: xmmnews@lists.nasa.gov
Subject: GSFC XMM-Newton GOF Status Report #172: XMM-NEWTON NEWS #89
From: xmmnews@lists.nasa.gov
Date: Tue, 10 Mar 2009 12:08:05 -0400
Delivered-to: xmmnews@zen.grc.nasa.gov
List-archive: <https://lists.nasa.gov/mailman/private/xmmnews>
List-help: <mailto:xmmnews-request@lists.nasa.gov?subject=help>
List-id: Newsletter for users of the XMM-Newton mission <xmmnews.lists.nasa.gov>
List-subscribe: <https://lists.nasa.gov/mailman/listinfo/xmmnews>, <mailto:xmmnews-request@lists.nasa.gov?subject=subscribe>
List-unsubscribe: <https://lists.nasa.gov/mailman/listinfo/xmmnews>, <mailto:xmmnews-request@lists.nasa.gov?subject=unsubscribe>
Reply-to: xmmnews_noreply@noreply.nasa.gov
Sender: xmmnews-bounces@lists.nasa.gov
User-agent: Mutt/1.5.19 (2009-01-05)

_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
_/                                                                _/
_/            XMM-NEWTON NEWS #89   ---    10-Mar-2009            _/
_/                                                                _/
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

              XMM-Newton Science Operations Centre at
               ESA's European Space Astronomy Centre,
 P.O. Box - Apdo. 78, 28691 Villanueva de la Canada, Madrid, Spain

_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

SOC Home Page:
   http://xmm.esac.esa.int/
Helpdesk web interface:
   http://xmm.esac.esa.int/external/xmm_user_support/helpdesk.shtml
Helpdesk email address:
   xmmhelp@sciops.esa.int
News Mailing List:
   http://xmm.esac.esa.int/external/xmm_news/news_list/index.php

_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

Contents:

  - XMM-Newton Workshop "Supersoft X-ray Sources - New Developments":
    deadline for abstract submission
  - Fix of a problem found in time correlation files (TCX) from
    XMM-Newton observations from revolutions 1435 to 1572
  - Regeneration of time correlation files (TCX) from XMM-Newton
    observations before revolution 1435
  - Conference "The Energetic Cosmos: from Suzaku to ASTRO-H":
    registration and abstract submission open


XMM-Newton Workshop "Supersoft X-ray Sources - New Developments":
deadline for abstract submission
================================================================

As announced in issue #80 of the XMM-Newton Newsletter, the
XMM-Newton Science Operations Centre is organising an astrophysical
workshop from Monday 18th to Wednesday 20th May 2009 at the
European Space Astronomy Centre (ESAC) close to Madrid, Spain.

This is a reminder on the approaching deadline for abstract submission:

PLEASE SUBMIT YOUR ABSTRACTS BY FRIDAY, 13th of MARCH.

See the workshop website for more information:
http://xmm.esac.esa.int/external/xmm_science/workshops/2009_science/


Fix of a problem found in time correlation files (TCX) from XMM-Newton
observations from revolutions 1435 to 1572
======================================================================

The time correlation (TCX) files are the ODF constituents which provide
the link of the XMM-Newton on-board time to Universal Time. It has
recently been discovered that TCX currently stored in the XMM-Newton
Science Archive (XSA) and with observation date ranging from October 10,
2007 to July 9, 2008 (revolutions 1435-1572) are affected by a
computational problem. This problem may induce absolute timing errors of
up to 600 microseconds. This problem was also mentioned in the EPIC
status of calibration and data analysis document, issue 2.7.3, announced
in XMM-Newton Newsletter #88, and related SAS watchout item available at
 
http://xmm2.esac.esa.int/sas/8.0.0/watchout/ODF/tcx_problems.shtml

The computational problem is now understood and fixed. Regeneration of
ODFs with the correct TCX constituent is currently underway, and is
expected to be completed by the end of May 2009. PIs of observations
which are still proprietary will receive a notification after ingestion
on the XSA of the re-generated ODFs.

The scientific analysis of observations using affected TCX files before
the fix is done will only be impacted if the results depend on the
knowledge of the absolute timing of registered X-ray events with a
precision of better than the mentioned 600 microseconds. PIs of such
observations and who prefer not to wait until ODFs are re-generated are
suggested to contact XMM-Newton SOC via e-mail to xmmpi@sciops.esa.int,
providing a short explanation of their needs and specifying the
observation ID in the subject of the message.


Regeneration of time correlation files (TCX) from XMM-Newton
observations before revolution 1435
============================================================

Following the correction of the TCX files from XMM-Newton revolutions
1435 to 1572 (see previous item of this Newsletter), all the TCX files
since the beginning of the mission will be re-generated. This "bulk
regeneration" exercise will allow us to populate the XSA archive with
ODF files including updated time correlation constituents. As a result,
XSA will contain data of homogeneous quality, based on the latest
determination of the ground-station antenna delays which account for the
contribution of the on-board computer and of the ground station to the
telemetry fly-time from the spacecraft to the Earth.

The impact of the bulk regeneration for the XMM-Newton users is
expected to be negligible. The readjustments in the time correlation
elements are within the typical systematic uncertainties of the
XMM-Newton absolute timing calibration (100 microseconds). The whole
regeneration exercise is expected to be finished by the end of October
2009.


Conference "The Energetic Cosmos: from Suzaku to ASTRO-H":
registration and abstract submission open
==========================================================

As announced in issue #86 of the XMM-Newton Newsletter, the conference
"The energetic cosmos: from Suzaku to ASTRO-H" will be held from 29th
June to 2nd July 2009 in Otaru, Hokkaido, Japan. Immediately following
this conference, a one-day meeting on the future mission IXO
(International X-ray Observatory) will be held separately.

Registration and abstract submission for this conference is now possible.

Deadline for abstract submission is March 16, 2009.
Deadline for registration is April 13, 2009.

See the conference website for more information:
http://www-utheal.phys.s.u-tokyo.ac.jp/SuzakuConference2009



Yours sincerely,
XMM-Newton SOC

_______________________________________________
XMM-NEWS mailing list
XMM-NEWS@sciops.esa.int
http://xmm.esac.esa.int/mailman/listinfo/xmm-news

================================================================================================
This message and any attachments are intended for the use of the addressee or addressees only. The
unauthorised disclosure, use, dissemination or copying (either in whole or in part) of its content
is prohibited. If you received this message in error, please delete it from your system and notify
the sender. E-mails can be altered and their integrity cannot be guaranteed. ESA shall not be liable
for any e-mail if modified.
=================================================================================================

----- End forwarded message -----
A service of the XMM-Newton GOF, NASA/GSFC

Please do not reply to this email.
Questions or comments should go to:
http://heasarc.gsfc.nasa.gov/cgi-bin/Feedback

Prev by Date: GSFC XMM-Newton GOF Status Report #171: XMM-NEWTON NEWS #88
Next by Date: GSFC XMM-Newton GOF Status Report #173: Users Group Meeting/Useful Information
Previous by thread: GSFC XMM-Newton GOF Status Report #171: XMM-NEWTON NEWS #88
Next by thread: GSFC XMM-Newton GOF Status Report #173: Users Group Meeting/Useful Information
Index(es):
- Date
- Thread