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NuSTAR low energy effective area correction due to thermal blanket tear

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arxiv 2005.00569 v2 pith:7EO4WAP7 submitted 2020-05-01 astro-ph.IM astro-ph.HE

Kristin K. Madsen , Brian W. Grefenstette , Sean Pike , Hiromasa Miyasaka , Murray Brightman , Karl Forster , Fiona A. Harrison This is my paper · ORCID
classification astro-ph.IMastro-ph.HE
keywords energynustarproblemadditionaladdressalignedanalysisaperture
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A rip in the MLI at the exit aperture of OMA, the NuSTAR optic aligned with detector focal plane module FPMA, has resulted in an increased photon flux through OMA that has manifested itself as a low energy excess. Overall, the MLI coverage has decreased by 10%, but there is an additional time-varying component, which occasionally causes the opening to increase by up to 20%. We address the problem with a calibration update, and in this paper, we describe the attributes of the problem, the implications it has on data analysis, and the solution.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 29 citations worldwide. Full citation record

  1. Emulation of non-linear 1D spectral models: relativistic X-ray reflection

    astro-ph.IM 2026-07 accept novelty 6.0 of 10

    A modular operator-learning emulator (RTFAST2) reproduces the relativistically convolved reflection spectrum of reltrans to O(0.1)% precision with 4–10× speed-up and unbiased posterior recovery on simulated spectra.

  2. Resolving SLX 1744-299 and SLX 1744-300 in the hard X-ray band: implications for their ultracompact nature

    astro-ph.HE 2026-06 unverdicted novelty 6.0 of 10

    NuSTAR resolves SLX 1744-299 and SLX 1744-300 in hard X-rays, yielding low luminosities that favor ultracompact orbital periods below 90-155 min via disc instability model comparison.

  3. Studying the Variable Continuum and Emission Line Spectrum of 4U 1700-377 using NuSTAR's Stray Light

    astro-ph.HE 2026-07 accept novelty 5.5 of 10

    NuSTAR focused plus stray-light data of 4U 1700-377 reveal model-dependent high-energy emission lines, no conclusive CRSF, and extended low-flux states whose continuum softens without increased absorption.

  4. Spectral properties of the neutron star low-mass X-ray binary 4U 1636-53, XTE J1739-285 and MAXI J1816-195

    astro-ph.HE 2025-01 conditional novelty 5.0 of 10

    Spectral fits to three neutron-star X-ray binaries suggest the corona sits close to the neutron star, because a fitted cover fraction is large for stellar seed photons and small for disk seed photons, and NS coronae a...

  5. NuSTAR Observations of the Galaxy Cluster Abell 3667

    astro-ph.HE 2025-05 conditional novelty 4.0 of 10

    Deep NuSTAR spectra of Abell 3667's core favor a two-temperature thermal model over an inverse Compton power law for the hard X-ray excess, with a ~0.2 uG magnetic field lower limit.

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