Multi-resolution imaging and spectra of extended sources

Lawrence Rudnick

doi:10.1016/S1387-6473(01)00163-4

Multi-resolution imaging and spectra of extended sources

Lawrence Rudnick

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Short survey › peer-review

2 Scopus citations

Abstract

I introduce a straightforward technique for the filtering of extended astronomical images into components of different spatial scales. For a positive original image, each component is positive definite, and the sum of all components equals the original image. In this way, the components are each individually suitable for flux measurements and broadband spectra calculations. I present an illustration of this technique on the radio galaxy Cygnus A.

Original language	English (US)
Pages (from-to)	101-103
Number of pages	3
Journal	New Astronomy Reviews
Volume	46
Issue number	2-7
DOIs	https://doi.org/10.1016/S1387-6473(01)00163-4
State	Published - 2002

Bibliographical note

Funding Information:
This work is supported by NSF grant AST 96-16964 and AST AST 96-19438 at the University of Minnesota. I am grateful to John Dickey, Andrew Young, Barron Koralesky and Deb Katz-Stone for many useful ideas and feedback.

Keywords

Galaxies: Active
Galaxies: Individual (Cygnus A)
Radiation mechanisms: Non-thermal
Radio continuum: Galaxies
Techniques: Image processing

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10.1016/S1387-6473(01)00163-4

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title = "Multi-resolution imaging and spectra of extended sources",

abstract = "I introduce a straightforward technique for the filtering of extended astronomical images into components of different spatial scales. For a positive original image, each component is positive definite, and the sum of all components equals the original image. In this way, the components are each individually suitable for flux measurements and broadband spectra calculations. I present an illustration of this technique on the radio galaxy Cygnus A.",

keywords = "Galaxies: Active, Galaxies: Individual (Cygnus A), Radiation mechanisms: Non-thermal, Radio continuum: Galaxies, Techniques: Image processing",

author = "Lawrence Rudnick",

note = "Funding Information: This work is supported by NSF grant AST 96-16964 and AST AST 96-19438 at the University of Minnesota. I am grateful to John Dickey, Andrew Young, Barron Koralesky and Deb Katz-Stone for many useful ideas and feedback.",

year = "2002",

doi = "10.1016/S1387-6473(01)00163-4",

language = "English (US)",

volume = "46",

pages = "101--103",

journal = "New Astronomy Reviews",

issn = "1387-6473",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Multi-resolution imaging and spectra of extended sources

AU - Rudnick, Lawrence

N1 - Funding Information: This work is supported by NSF grant AST 96-16964 and AST AST 96-19438 at the University of Minnesota. I am grateful to John Dickey, Andrew Young, Barron Koralesky and Deb Katz-Stone for many useful ideas and feedback.

PY - 2002

Y1 - 2002

N2 - I introduce a straightforward technique for the filtering of extended astronomical images into components of different spatial scales. For a positive original image, each component is positive definite, and the sum of all components equals the original image. In this way, the components are each individually suitable for flux measurements and broadband spectra calculations. I present an illustration of this technique on the radio galaxy Cygnus A.

AB - I introduce a straightforward technique for the filtering of extended astronomical images into components of different spatial scales. For a positive original image, each component is positive definite, and the sum of all components equals the original image. In this way, the components are each individually suitable for flux measurements and broadband spectra calculations. I present an illustration of this technique on the radio galaxy Cygnus A.

KW - Galaxies: Active

KW - Galaxies: Individual (Cygnus A)

KW - Radiation mechanisms: Non-thermal

KW - Radio continuum: Galaxies

KW - Techniques: Image processing

UR - https://www.scopus.com/pages/publications/0036229081

UR - https://www.scopus.com/pages/publications/0036229081#tab=citedBy

U2 - 10.1016/S1387-6473(01)00163-4

DO - 10.1016/S1387-6473(01)00163-4

M3 - Short survey

AN - SCOPUS:0036229081

SN - 1387-6473

VL - 46

SP - 101

EP - 103

JO - New Astronomy Reviews

JF - New Astronomy Reviews

IS - 2-7

ER -

Multi-resolution imaging and spectra of extended sources

Abstract

Bibliographical note

Keywords

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