HEAVENS (High-Energy Astrophysics Virtually ENlightened Sky) is a web interface that provides high-level quality products for a number of recent high-energy missions. The services provided by HEAVENS allow any user to easily get scientific results for several observatories without requiring mission specific software or detailed instrumental knowledge. The ultimate goal is to ensure that the data of the present instruments can be effectively used by any interested user.
HEAVENS currently includes the SPI spectra of about 25 of the sources listed in [5], for which a flux 20 mCrab is reported. The HEAVENS spectra have been obtained with the spimodfit analysis chain, and cover a wide energy range, between 25 keV to 1 MeV. Data selection includes the pointing mode, a minimum SPI observation time in each science window 500 s and an offset ranging between 4 and 12 deg of the source position with respect to the SPI pointing direction.
Some non-default parameter settings have been used to obtain the HEAVENS spectra, including a 1-day background time variability coefficient and a minimum flux of 10 counts s in the catalogue extraction step (see the coockbook section for more details). Some key parameters have also been defined for each source (e.g. the spectral binning) as well as a case-by-case spectral fitting modelisation in XSPEC (e.g. cyclotron lines). The SPI catalogue will be extended in the future to provide on-the-fly analysis for a given set of sources for any given time interval.