N132D Data Analysis

Please place any data analysis products related to fitting N132D here, under the appropriate section for each instrument. Please date each entry so we have a log of submissions. JPEG and GIF images can be displayed inline, which other files (PDF, PS, PHA files, event lists) should be included as attachments with a link to the file.

• Chandra ACIS
• Chandra HETG
• Suzaku XIS
• Swift XRT
• XMM MOS
• XMM pn
• XMM RGS

Chandra ACIS

 0.35-8.0 keV image from an 89 ks ACIS-S3 observation with the proposed extraction region overlaid.  There are about 2.5 million total counts from the SNR in this data set.

 Chandra image from a larger region that has been smoothed and contrast enhanced with the XIS extraction region overlaid to determine if there are any bright sources in the XIS extraction region:
Fit to the ACIS spectrum with the ESAC version 1.0 model for the 2.0-10.0 keV range.

Fit with the ESAC version v1.0 model in the 2.0-4.0 kV range looking for any missing lines, there do not appear to be any line features that the ACIS spectrum would require:

Chandra HETG

Suzaku XIS

Suzaku/XIS1 full-band image with extraction region in magenta (left) compared to ACIS image and extraction region in green (right).

Suzaku/XIS spectra (black=XIS1, red=XIS0, green=XIS3) from 2010-07-27, with E212_v1.0_20110439.xcm model folded through. A constant normalization factor was allowed to vary for each XIS, but everything else was fixed. Norms are 1.27, 1.31, 1.28 (so ~30% larger than XMM model).

Spectra of Suzaku/XIS N132D obs, with old XMM model folded through

Update 2020-12-01

Eric's work simultaneously fitting the NXB+CXB background to Suzaku XIS (FI CCD) observations of N132D.

Presentation to IACHEC 2020 Symposium:  PDF  Video

Tarball of data and XSPEC command files showing example fit procedure: suzaku_background_fit_example.tar.gz

Update 2021-05-12

Comparison of v2.13 empirical model and 'n132d_afoster_suzuki_vrnei_20210420' physical model: miller_n132d_suzaku_20210512.pdf

Swift XRT

XMM MOS 

Coadded MOS spectra at high energies from 10 observations (processed as of 11-may-2011). Total Exposure ~ 257 ksec. In total there more than

40 observations in the XMM archive.

XMM pn

XMM RGS

NICER XTI

NICER has ~21 ksec good data, taken between 2018-01-29 and 2018-02-23.  All 52 operating detectors were enabled.

Data were screened for undershoots in 0-40 ct/s/FPM range and overshoots in the 0-2 ct/s/FPM range, plus an additional cut on high energy X-ray counts (>2 keV, 0-4.5 ct/s/FPM cut).

This is a fit using the v2.11 model, only allowing the overall norm and NICER SCORPEON background terms to vary.

The NICER norm is 0.993.  The backgrounds are pretty reasonable, although the "LEEL" background component would indicate a slightly rare condition.  Without "LEEL", the fit demands an additional high energy background component in the 2-10 keV range.

Using the v2.14 model, the NICER situation is considerable worse.

NICER is not particularly sensitive to emission in the Fe K region.

Attachments: