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To find and download HEASARC data in the cloud, you can use astroquery.heasarc or download our new tool, hark.

The HEASARC and NuSTAR teams are greatly saddened by the sudden passing of Katja Pottschmidt. Most recently Katja was the lead scientist for the NuSTAR Guest Observer Facility (GOF), a role she had supported for many years. During her science career she worked on many other high energy astrophysics missions and played an integral role in advancing our knowledge of the universe. She was a wonderful colleague and friend and will be keenly missed by all who knew her.


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The following missions/instruments and background combinations are currently available through WebSpec:

Notes on Chandra spectral simulations.
Chandra ACIS information
Chandra HETG information
Chandra LETG information

Notes on NICER spectral simulations.

Notes on NUSTAR spectral simulations.

Notes on Swift spectral simulations.
Swift BAT Information
Swift XRT Information
Swift UVOT Information

Notes on XMM spectral simulations.
XMM EPIC MOS CCD
XMM EPIC pn CCD

Notes on Athena spectral simulations.
Athena X-IFU

Notes on ASCA spectral simulations.
ASCA GIS
ASCA SIS

Notes on BeppoSAX spectral simulations.
BeppoSAX Information

Notes on ROSAT spectral simulations.
ROSAT PSPC

Notes on RXTE HEXTE spectral simulations.
RXTE HEXTE

Notes on 5 PCU RXTE PCA spectral simulations.

Notes on 3 PCU RXTE PCA spectral simulations.
RXTE PCA (Layer 1 only with instr background)
RXTE PCA (Layer 1 only with instr & cosmic background)
RXTE PCA (Layers 2+3 with instr background)
RXTE PCA (Layers 2+3 with instr & cosmic background)
RXTE PCA (Layers 1+2+3 with instr background)
RXTE PCA (Layers 1+2+3 with instr & cosmic background)

Notes on Suzaku spectral simulations.
Suzaku HXD
Suzaku XIS