A High Spectral Resolution Study of the Soft X-Ray Background with the X-Ray Quantum Calorimeter

Dallas Wulf, Megan E. Eckart, Massimiliano Galeazzi, Felix Jaeckel, Richard L. Kelley, Caroline A. Kilbourne, Kelsey M. Morgan, F. Scott Porter, Dan McCammon, Andrew E. Szymkowiak

Research output: Contribution to journalArticle

Abstract

We present here a combined analysis of four high spectral resolution observations of the Diffuse X-ray Background, made using the University of Wisconsin-Madison/Goddard Space Flight Center X-ray Quantum Calorimeter sounding rocket payload. The observed spectra support the existence of a ∼0.1 keV Local Hot Bubble and a ∼0.2 keV Hot Halo, with discrepancies between repeated observations compatible with expected contributions of time-variable emission from Solar Wind Charge Exchange. An additional component of ∼0.9 keV emission observed only at low galactic latitudes can be consistently explained by unresolved dwarf M stars.

Original languageEnglish (US)
Article number120
JournalAstrophysical Journal
Volume884
Issue number2
DOIs
StatePublished - Oct 20 2019

Fingerprint

spectral resolution
calorimeters
dwarf stars
sounding rockets
M stars
space flight
high resolution
payloads
charge exchange
solar wind
bubble
halos
x rays
bubbles
flight
analysis

Keywords

  • instrumentation: spectrographs
  • X-rays: diffuse background
  • X-rays: ISM

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Wulf, D., Eckart, M. E., Galeazzi, M., Jaeckel, F., Kelley, R. L., Kilbourne, C. A., ... Szymkowiak, A. E. (2019). A High Spectral Resolution Study of the Soft X-Ray Background with the X-Ray Quantum Calorimeter. Astrophysical Journal, 884(2), [120]. https://doi.org/10.3847/1538-4357/ab41f8

A High Spectral Resolution Study of the Soft X-Ray Background with the X-Ray Quantum Calorimeter. / Wulf, Dallas; Eckart, Megan E.; Galeazzi, Massimiliano; Jaeckel, Felix; Kelley, Richard L.; Kilbourne, Caroline A.; Morgan, Kelsey M.; Porter, F. Scott; McCammon, Dan; Szymkowiak, Andrew E.

In: Astrophysical Journal, Vol. 884, No. 2, 120, 20.10.2019.

Research output: Contribution to journalArticle

Wulf, D, Eckart, ME, Galeazzi, M, Jaeckel, F, Kelley, RL, Kilbourne, CA, Morgan, KM, Porter, FS, McCammon, D & Szymkowiak, AE 2019, 'A High Spectral Resolution Study of the Soft X-Ray Background with the X-Ray Quantum Calorimeter', Astrophysical Journal, vol. 884, no. 2, 120. https://doi.org/10.3847/1538-4357/ab41f8
Wulf, Dallas ; Eckart, Megan E. ; Galeazzi, Massimiliano ; Jaeckel, Felix ; Kelley, Richard L. ; Kilbourne, Caroline A. ; Morgan, Kelsey M. ; Porter, F. Scott ; McCammon, Dan ; Szymkowiak, Andrew E. / A High Spectral Resolution Study of the Soft X-Ray Background with the X-Ray Quantum Calorimeter. In: Astrophysical Journal. 2019 ; Vol. 884, No. 2.
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