Spatial structure in the soft X-ray background as observed from OSO-8, and the North Polar Spur as a reheated supernova remnant

1977 ◽  
Vol 218 ◽  
pp. 511 ◽  
Author(s):  
R. J. Borken ◽  
D.-A. C. Iwan
Keyword(s):  
Spatial Structure ◽  
Supernova Remnant ◽  
X Ray ◽  
The North ◽  
North Polar ◽  
X Ray Background

Spectral Observation of the Soft X-Ray Background and of the North Polar Spur with Solid State Spectrometers

1983 ◽  
pp. 357-360 ◽  
Author(s):  
R. Rocchia ◽  
M. Arnaud ◽  
C. Blondel ◽  
C. Cheron ◽  
J. C. Christy ◽  
...  
Keyword(s):  
Solid State ◽  
Spectral Observation ◽  
X Ray ◽  
The North ◽  
North Polar ◽  
X Ray Background

Spectral observation of the soft x-ray background and of the north polar spur with solid state spectrometers

1981 ◽  
Vol 30 (1-4) ◽  
pp. 253-257 ◽  
Author(s):  
R. Rocchia ◽  
M. Arnaud ◽  
C. Blondel ◽  
C. Cheron ◽  
J. C. Christy ◽  
...  
Keyword(s):  
Solid State ◽  
Spectral Observation ◽  
X Ray ◽  
The North ◽  
North Polar ◽  
X Ray Background

scholarly journals HEAO-1 Diffuse Soft X-Ray Sky Maps

1984 ◽  
Vol 81 ◽  
pp. 219-221
Author(s):  
John A. Nousek ◽  
Gordon P. Garmire ◽  
George Weaver
Keyword(s):  
Galactic Center ◽  
Energy Interval ◽  
Background Intensity ◽  
X Ray ◽  
The North ◽  
Center Region ◽  
Local Emission ◽  
North Polar ◽  
X Ray Background

Maps of the diffuse soft X-ray background intensity are presented, spanning four energy intervals. The lowest energy interval (0.18-0.56 keV) is dominated by local emission, while the next two intervals (0.56-1.0 keV and 1.0-1.4 keV) reveal more distant and more sharply defined structures. Enlarged maps of several of these structures are presented, including the North Polar Spur, the Galactic Center region and the Eridanus Loop.

scholarly journals Features in the Soft X-ray Background

1990 ◽  
Vol 115 ◽  
pp. 146-155
Author(s):  
R. Rothenflug
Keyword(s):  
Energy Resolution ◽  
Line Emission ◽  
Spatial Variations ◽  
Emission Lines ◽  
X Ray ◽  
Hot Gas ◽  
The North ◽  
North Polar ◽  
X Ray Background ◽  
Japanese Group

AbstractThe soft X-ray background is explained in terms of emission coming from hot gas. Most of these soft X-ray data were obtained by proportional counters with a poor energy resolution. Instruments having the capability to resolve lines were only flown by two groups: a GSPC by a Japanese group and a SSD by a french-american collaboration. They both detected the 0 VII line emission coming from the soft X-ray background and so proved the thermal nature of the emission. The implications of these results on possible models for the local hot medium will be discussed. The same detectors observed part of the North Polar Spur. They detected emission lines coming from different species (0 VII,Fe XVII,Ne IX). Spatial variations of line ratios for this object could be due to non-equilibrium ionization effects.

scholarly journals SPectral Observation of the Soft X-Ray Background and of the North Polar Spur with Solid State Spectrometers

1983 ◽  
Vol 101 ◽  
pp. 357-360
Author(s):  
R. Rocchia ◽  
M. Arnaud ◽  
C. Blondel ◽  
C. Cheron ◽  
J. C. Christy ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Angle ◽  
Detection System ◽  
Field Of View ◽  
X Ray ◽  
The North ◽  
Diffuse Background ◽  
North Polar ◽  
X Ray Background ◽  
White Sands

In this paper, we present preliminary results of soft X-ray diffuse background observations. We observed two particular regions of the sky in the 0.3–1.5 keV range. The detection system consisted of three independent, 1 cm diameter, cooled solid state detectors. Nearly overlapping fields of view subtended a solid angle of approximately 1/4 sr. Except for the field of view, the whole set was similar to that described in Schnopper et al. (1982) (hereafter referred to as paper 1). This system was flown on board a three-axis stalibized rocket. The flight took place at White Sands Missile Range on 1981 May 4 at 0755 UT.

scholarly journals The Nature of the Soft X-Ray Emitting Region in the Direction of the North Polar Spur

1984 ◽  
Vol 81 ◽  
pp. 211-214
Author(s):  
James P. Morrison ◽  
Wilton T. Sanders
Keyword(s):  
Spatial Structure ◽  
Atomic Hydrogen ◽  
The Other ◽  
Sounding Rocket ◽  
Energy Bands ◽  
X Ray ◽  
The North ◽  
Absorbing Material ◽  
North Polar ◽  
Spatially Varying

The spatial structure of the X-ray sky in the direction of the North Polar Spur was examined in two energy bands, the B band (0.10 - 0.18 keV) and the C band (0.15 - 0.28 keV). A model with two emitting regions, one local with unabsorbed emission, and the other more distant with emission partially absorbed by spatially varying amounts was investigated.Using the distribution of atomic hydrogen as a measure of absorbing material, this model was used to predict the flux in the direction of the North Polar Spur. The predicted flux was compared to the data obtained from several sounding rocket flights. The derived flux was found to correlate well with the observed data.

Spectral Observation of the Soft X-Ray Background and of the North Polar Spur with Solid State Spectrometers

1981 ◽  
pp. 253-257
Author(s):  
R. Rocchia ◽  
M. Arnaud ◽  
C. Blondel ◽  
C. Cheron ◽  
J. C. Christy ◽  
...  
Keyword(s):  
Solid State ◽  
Spectral Observation ◽  
X Ray ◽  
The North ◽  
North Polar ◽  
X Ray Background

scholarly journals Heating of the Interstellar Medium by Supernova Remnants

1983 ◽  
Vol 101 ◽  
pp. 385-392
Author(s):  
Donald P. Cox
Keyword(s):  
Interstellar Medium ◽  
Supernova Remnants ◽  
Supernova Remnant ◽  
Low Density ◽  
The Sun ◽  
X Ray ◽  
Interstellar Material ◽  
X Ray Background

We observe the heating of interstellar material in young supernova remnants (SNR). In addition, when analyzing the soft X-ray background we find evidence for large isolated regions of apparently hot, low density material. These, we infer, may have been heated by supernovae. One such region seems to surround the Sun. This has been modeled as a supernova remnant viewed from within. The most reasonable parameters are ambient density no ~ 0.004 cm−3, radius of about 100 pc, age just over 105 years (Cox and Anderson 1982).

X-ray evidence for the supernova origin of the North Polar spur

1976 ◽  
Vol 207 ◽  
pp. 888 ◽  
Author(s):  
R. G. Cruddace ◽  
H. Friedman ◽  
G. Fritz ◽  
S. Shulman
Keyword(s):  
X Ray ◽  
The North ◽  
North Polar

Emission line features in the soft X-ray spectra of the North Polar Spur and the Cygnus Loop

1980 ◽  
Vol 238 ◽  
pp. 886 ◽  
Author(s):  
H. Inoue ◽  
K. Koyama ◽  
M. Matsuoka ◽  
T. Ohashi ◽  
Y. Tanaka ◽  
...  
Keyword(s):  
Emission Line ◽  
X Ray ◽  
Cygnus Loop ◽  
The North ◽  
Line Features ◽  
North Polar
Sign in / Sign up

Export Citation Format

Share Document