Working Group
- Members
Vadim Burwitz (chair, ROSAT, Chandra, XMM,eROSITA)
Jelle Kaastra (Chandra, Modeling)
Herman Marshall (Chandra)
Norbert Schulz (Chandra)
Jeremy Drake (Chandra)
Steve Sembay (XMM EPIC-MOS)
Cor de Vries (XMM RGS)
Vadim Burwitz (Chandra)
Tadayasu Dotani, Eric Miller (Suzaku)
Isolated Neutron Stars
- Objects
RX J1856.5-3754
PSR B0656+14 - Data RX J1856.5-375
- Instruments:
- Chandra LETG + ACIS-S / HRC-S
- XMM EPIC-pn SW
- SWIFT
- Astrosat SXT
- Hitomi
- 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
Model TBabs<1>*bbodyrad<2> Source No.: 1 Active/On
#Model Model Component Parameter Unit Value
# par comp
# 1 1 TBabs nH 10^22 7.24535E-03 +/- 3.43494E-04
# 2 2 bbodyrad kT keV 6.23787E-02 +/- 3.79046E-04
# 3 2 bbodyrad norm 1.58155E+05 +/- 6513.96
#________________________________________________________________________
#
# Using energies from responses.
#
#Fit statistic : Chi-Squared = 693.13 using 1254 PHA bins.
#
#Test statistic : Chi-Squared = 693.13 using 1254 PHA bins.
# Reduced chi-squared = 0.55406 for 1251 degrees of freedom
# Null hypothesis probability = 1.000000e+00
# Weighting method: standard
#
!XSPEC12> error 1 2 3
# Parameter Confidence Range (2.706)
# 1 0.00668153 0.00781739 (-0.000563825,0.000572039)
# 2 0.0617595 0.063001 (-0.000619178,0.000622327)
# 3 147885 169271 (-10270.4,11116.1)
#
#Model Model Component Parameter Unit Value
# par comp
# 1 1 TBabs nH 10^22 7.24535E-03 +/- 3.43494E-04
# 2 2 bbodyrad kT keV 6.23787E-02 +/- 3.79046E-04
# 3 2 bbodyrad norm 1.58155E+05 +/- 6513.96
#________________________________________________________________________
#
# Using energies from responses.
#
#Fit statistic : Chi-Squared = 693.13 using 1254 PHA bins.
#
#Test statistic : Chi-Squared = 693.13 using 1254 PHA bins.
# Reduced chi-squared = 0.55406 for 1251 degrees of freedom
# Null hypothesis probability = 1.000000e+00
# Weighting method: standard
#
!XSPEC12> error 1 2 3
# Parameter Confidence Range (2.706)
# 1 0.00668153 0.00781739 (-0.000563825,0.000572039)
# 2 0.0617595 0.063001 (-0.000619178,0.000622327)
# 3 147885 169271 (-10270.4,11116.1)
#
White Dwarfs
- Objects
HZ 43, Sirius B, GD 153
- Missions
EUVE, ROSAT, Chandra, XMM-Newton
- Data
- Chandra
- HZ 43
- Sirius B
- GD 153
- Chandra
- Results
see papers
Papers
- http://cdsads.u-strasbg.fr/abs/2006A%26A...458..541B Beuermann, K., Burwitz, V., Rauch, T. 2006: ''Establishing HZ43 A, Sirius B, and RX J185635-3754 as soft X-ray standards: a cross-calibration between the Chandra LETG+HRC-S, the EUVE spectrometer, and the ROSAT PSPC'', A&A 458,541
- http://cdsads.u-strasbg.fr/abs/2008HEAD...10.0406K Kaastra, J. S., Lanz, T., Hubeny, I., Paerels, F. 2008: ''Establishing HZ43 A, Sirius B, and RX J185635-3754 as soft X-ray standards: a cross-calibration between the Chandra LETG+HRC-S, the EUVE spectrometer, and the ROSAT PSPC'', HEAD 10.0406
- http://cdsads.u-strasbg.fr/abs/2008A%26A...481..807R Rauch, T. 2008, ''Uncertainties in (E)UV model atmosphere fluxes'', A&A 481, 807
- http://cdsads.u-strasbg.fr/abs/2006A%26A...458..541B Kaastra, J. S., Lanz, T.. Hubeny, I.. Paerels, F. B. S. 2009, ''Effective area calibration of the reflection grating spectrometers of XMM-Newton. II. X-ray spectroscopy of DA white dwarfs'', A&A 497, 311
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