- 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
Swift CALDB Data updated (15 Aug 2019)
The Swift SC clock correction file has been updated (CALDB update version 20190813).
PIMMS updated to Version 4.10 (15 Aug 2019)
Version 4.10 contains updates for NICER, suitable for Cycle 2 proposals. Note that the broadband background rate reported by version 4.9/4.9a included background counts below 0.2 keV, where the rate is very high. Version 4.10 restricts brodadband count rates for both source and background to the 0.2-12 keV range. This version also contains the current effective area curves for Athena X-IFU
XSPEC 12.10.1m Patch Released (15 Aug 2019)
This patch updates rdblur, kdblur, kdblur2, kerrconv for considerable speed improvements over previous patches, and removes the outdated relline, relline_lp, relline_lp_ext, relconv, relconv_lp, and relconv_lp_ext models.
NuSTAR CALDB Update (12 Aug 2019)
The NuSTAR CALibration DataBase was updated on August 8, 2019 (CALDB version 20190827). This updates the NuSTAR clock correction file to version 95, valid through 2019-08-12.
XSPEC 12.10.1l Patch Released (08 Aug 2019)
The HDUVERS1 keyword has been updated from '1.1.0' to '1.2.1' since CHANNEL and COUNTS columns can be written in 'J' format in output files generated by the fakeit command.
NICER detects X-ray pulsations from the rapidly brightening SAX J1808.4-3658 (08 Aug 2019)
NICER monitoring of the accreting millisecond X-ray pulsar SAX J1808.4-3658 successfully recovered a 401 Hz pulsation after correcting for delays due to the known binary orbit. The time of ascending node derived from the timing solution is 27 seconds earlier than predicted, which indicates that the orbital expansion is proceeding more slowly than expected.
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