News by Date
News by Category
Solar System
White Dwarfs
Neutron Stars
Black Holes
Milky Way Galaxy
Normal Galaxies
Galaxy Clusters
Cosmology/Deep Field
Press Resources
Status Reports
Press Advisories
Image Releases
Release Guidelines
Image Use Policy
Web Shortcuts
Chandra Blog
RSS Feed
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
Chandra @ NASA
Visit the Chandra pages at the NASA portal (opens in new window)
Image Use
Image Use Policy & Request Form
Guidelines for utilizing images, applets, movies, and animations featured in this Web Site.
Getting Hard Copies of Images
Ways to obtain photos, slides, etc of Chandra images.
Operations CXO Status Report

Friday 1 May 2015 9.00am EDT

During the last week the observing schedule was replanned to incorporate an observation of GRB150423A, which was accepted as a Director's Discretionary Time Target of Opportunity on Apr 28. Scheduled observations of NGC4487 and MCG+01-32-049 were impacted by the replan and will be rescheduled in future weeks.

A Chandra press release was issued on Apr 30 describing results from a study that suggests a group of unusual giant black holes may be consuming excessive amounts of matter. Thick, donut-shaped disks may be surrounding the black holes, blocking much of the light that would otherwise be emitted. The black holes in these quasars may be growing at an extraordinarily rapid rate. For details see:

Also of note this week was the announcement on Apr 30 of the release of version 5.1 of MARX, a suite of programs designed to enable the user to simulate the on-orbit performance of the Chandra X-ray Observatory. For details see: Also announced was the availability, as of Apr 21, of Sherpa as an Open Source project with its source code repository available on GitHub ( Sherpa is the CIAO modeling and fitting application. It enables the user to construct complex models from simple definitions and fit those models to data, using a variety of statistics and optimization methods.

The schedule of targets for the next two weeks is shown below and includes an observation of GRB 150314A, which is a Target of Opportunity follow-up accepted on Mar 19, observations of CXOU J171405.7-381031 and Centaurus A coordinated with NuSTAR, and observations of Praesepe coordinated with Kepler.

CXOUJ171405.7-38103 ACIS-S May 4 G1.9+0.3 ACIS-S Radiation Belts May 5 G1.9+0.3 ACIS-S ALPHACEN HRC-I May 7 3C277.2 ACIS-S NGC5044 ACIS-S Radiation Belts M10 ACIS-S May 8 deltaCep ACIS-I HD191612 ACIS-S/HETG May 9 G1.9+0.3 ACIS-S NGC5044 ACIS-S May 10 Radiation Belts NGC5044 ACIS-S May 11 GRB150314A ACIS-S May 12 HD191612 ACIS-S/HETG Radiation Belts May 13 CentaurusA ACIS-S/LETG SgrA* ACIS-S May 14 Abell1795outsk (2 obs) ACIS-I Radiation Belts May 15 Abell1795outskirts ACIS-I May 16 Praesepe ACIS-I CentaurusA ACIS-S/LETG May 17 Praesepe ACIS-I Radiation Belts May 18


All spacecraft subsystems continued to support nominal operations.

Return to Status Reports