Probing the galactic halo with ROSAT

D. N. Burrows; J. A. Mendenhall

doi:10.1016/0273-1177(93)90100-P

Probing the galactic halo with ROSAT

D. N. Burrows, J. A. Mendenhall

Astronomy & Astrophysics

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Abstract

We discuss the current status of ROSAT shadowing observations designed to search for emission from million degree gas in the halo of the Milky Way galaxy. Preliminary results indicate that million degree halo gas is observed in the 1 4 keV band in some directions, most notably toward the Draco cloud at (ℓ, b) = (92°, +38°), but that the halo emission is patchy and highly anisotropic. Our current understanding of this halo emission is based on a small handful of observations which have been analyzed to date. Many more observations are currently being analyzed or are scheduled for observation within the next year, and we expect our understanding of this component of the galactic halo to improve dramatically in the near future.

Original language	English (US)
Pages (from-to)	83-92
Number of pages	10
Journal	Advances in Space Research
Volume	13
Issue number	12
DOIs	https://doi.org/10.1016/0273-1177(93)90100-P
State	Published - Dec 1993

All Science Journal Classification (ASJC) codes

Aerospace Engineering
Astronomy and Astrophysics
Geophysics
Atmospheric Science
Space and Planetary Science
General Earth and Planetary Sciences

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10.1016/0273-1177(93)90100-P

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@article{066991f1463f4dc9bf02ba391b86e618,

title = "Probing the galactic halo with ROSAT",

abstract = "We discuss the current status of ROSAT shadowing observations designed to search for emission from million degree gas in the halo of the Milky Way galaxy. Preliminary results indicate that million degree halo gas is observed in the 1 4 keV band in some directions, most notably toward the Draco cloud at (ℓ, b) = (92°, +38°), but that the halo emission is patchy and highly anisotropic. Our current understanding of this halo emission is based on a small handful of observations which have been analyzed to date. Many more observations are currently being analyzed or are scheduled for observation within the next year, and we expect our understanding of this component of the galactic halo to improve dramatically in the near future.",

author = "Burrows, {D. N.} and Mendenhall, {J. A.}",

note = "Funding Information: We gratefully acknowledge the assistance and advice of Steve Snowden with our data reduction, and the efforts of the German and US ROSAT teams in producing an outstanding observatory, without which this work would not have been possible. This work was supported by NASA grants NAG5—1535 and NAG5—1786.",

year = "1993",

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doi = "10.1016/0273-1177(93)90100-P",

language = "English (US)",

volume = "13",

pages = "83--92",

journal = "Advances in Space Research",

issn = "0273-1177",

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TY - JOUR

T1 - Probing the galactic halo with ROSAT

AU - Burrows, D. N.

AU - Mendenhall, J. A.

N1 - Funding Information: We gratefully acknowledge the assistance and advice of Steve Snowden with our data reduction, and the efforts of the German and US ROSAT teams in producing an outstanding observatory, without which this work would not have been possible. This work was supported by NASA grants NAG5—1535 and NAG5—1786.

PY - 1993/12

Y1 - 1993/12

N2 - We discuss the current status of ROSAT shadowing observations designed to search for emission from million degree gas in the halo of the Milky Way galaxy. Preliminary results indicate that million degree halo gas is observed in the 1 4 keV band in some directions, most notably toward the Draco cloud at (ℓ, b) = (92°, +38°), but that the halo emission is patchy and highly anisotropic. Our current understanding of this halo emission is based on a small handful of observations which have been analyzed to date. Many more observations are currently being analyzed or are scheduled for observation within the next year, and we expect our understanding of this component of the galactic halo to improve dramatically in the near future.

AB - We discuss the current status of ROSAT shadowing observations designed to search for emission from million degree gas in the halo of the Milky Way galaxy. Preliminary results indicate that million degree halo gas is observed in the 1 4 keV band in some directions, most notably toward the Draco cloud at (ℓ, b) = (92°, +38°), but that the halo emission is patchy and highly anisotropic. Our current understanding of this halo emission is based on a small handful of observations which have been analyzed to date. Many more observations are currently being analyzed or are scheduled for observation within the next year, and we expect our understanding of this component of the galactic halo to improve dramatically in the near future.

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JO - Advances in Space Research

JF - Advances in Space Research

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ER -

Probing the galactic halo with ROSAT

Abstract

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