- SkyView - An easy-to-use
tool that returns digital images of the sky in any waveband from radio
through to gamma rays
- VAO DataScope - Query catalogs and services from
the HEASARC and from around the world using a single form
- Literature - Links to literature
search engines and online versions of refereed journals and science
Chandra CALDB 4.8.5 installed at the HEASARC (08 Nov 2019)
The Chandra CalDB 4.8.5 is now installed and available at the HEASARC. Chandra 4.8.5 was released by the CXC on November 7, 2019...
NASA's NICER Catches Record-setting X-ray Burst (07 Nov 2019)
NICER detected an intense burst of X-rays at about 10:04 p.m. EDT on Aug. 20 from a massive thermonuclear flash on the surface of the pulsar SAX J1808.4-3658. This is the brightest burst seen by NICER so far. The burst shows a remarkable two-stage evolution in flux, along with and burst oscillations at the known pulsar spin frequency.
NICER Background Estimator Tools (30 Oct 2019)
Software tools to estimate background in NICER observations are under development, based on analysis of deep NICER exposures of "blank-sky" fields. "Alpha-release" versions of these tools are now available to help NICER observers better estimate backgound in observations and proposals. Understanding of the NICER background is still evolving so the estimates provided by these new tools should be used with caution.
NICER detection of two thermonuclear (Type I) X-ray bursts establishes that MAXI J1807+132 hosts a neutron star. (29 Oct 2019)
NICER has detected two thermonuclear X-ray bursts from the new MAXI X-ray transient MAXI J1807+132, discovered in March 2019. The detection of these bursts show that the system is an LMXB with a neutron star primary.
NuSTAR Cycle 6 now Accepting Proposals (25 Oct 2019)
The NuSTAR General Observer (GO) Program is soliciting proposals for observations during observing Cycle 6. Phase-1 science proposals are due by 4:30 p.m. Eastern Time January 24, 2020. For more information see the NuSTAR Proposal page.
Swift CALDB Data updated (23 Oct 2019)
The Swift SC clock correction file has been updated (CALDB update version 20191017), and the Swift XRT caldb has been updated to version 20190910.
[What is this?]