Page History

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• Instruments:
  • Chandra LETG + ACIS-S / HRC-S
  • XMM  EPIC-pn SW
  • SWIFT
  • Astrosat SXT
  • Hitomi

• eROSITA calibration observations
  
  • 2019 09 13  80ksec to be done
  • 2019 09 24  80ksec to be done
  • 2020 03 11 - 04 22  80ksec after survey #1
  
  
• Chandra LETGS+HRC-S observations
  

  •  500ks OBS_IDs: 00113  03380  03381  03382  03399

  • 120ks  OBS_IDs: 14418  15293

  • 172ks  OBS_IDs: 21693 21896 (will be obvserved in the context of eROSITA calibration)
  eROSITA calibration observations
  
  • 2019 09 13  80ksec to be done
  • 2019 09 24  80ksec to be done
  • 2020 03 11 - 04 22  80ksec after survey #1

• Chandra LETG + ACIS-S

• Models

RX J1856.5-3754 based on the CHANDRA LETGS + HRCS Data

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      delchisqr = 1 ( = 1 sigma for 1 parameter)

• • tbabs*bbodyrad   

    chiqs = 692.6
    dof =1251
    chired = 0.55367
    nh = (7.24 +/- 0.34 ) * 1e19 cm-2
    kT = ( 62.38 +/- 0.38 ) eV
    norm = (1.580 +/- 0.064) * 1e5
    
    

  • phabs*bbodyrad   

    chiqs = 696.0
    dof =1251
    chired = 0.55636
    nh = (7.37 +/- 0.35 ) * 1e19 cm-2
    kT = ( 62.43 +/- 0.38 ) eV
    norm = (1.576 +/- 0.065) * 1e5
    
    
    

White Dwarfs

• Objects
  HZ 43, Sirius B, GD 153

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