Ariel V sky survey - X-ray variability of NGC 5128

A. Lawrence; J. P. Pye; M. Elvis

doi:10.1093/mnras/181.1.93P

Ariel V sky survey - X-ray variability of NGC 5128

A. Lawrence, J. P. Pye, M. Elvis

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Long-term monitoring of the X-ray source associated with the nucleus of NGC 5128 has produced the most complete light curve in any frequency band for this peculiar active galaxy. The X-ray data indicate activity on at least two time scales: (1) a slow outburst with a time scale of 4-7 yr, (2) superimposed flares with a time scale of 20-50 day. This pattern of behavior is related to other X-ray active galaxies: specifically NGC 4151 (Seyfert) and MKN 421 (BL Lac). Some similarities are noted.

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society
Volume	181
DOIs	https://doi.org/10.1093/mnras/181.1.93P
Publication status	Published - 1 Dec 1977

Keywords / Materials (for Non-textual outputs)

Ariel Satellites
Black Holes (Astronomy)
Galactic Nuclei
Light Curve
Sky Surveys (Astronomy)
X Ray Sources
Active Galaxies
Centaurus Constellation
Frequencies
Galactic Radiation
Peculiar Galaxies
Radiant Flux Density
Radioactivity
Seyfert Galaxies
Spectral Bands
Time
Variability

Access to Document

10.1093/mnras/181.1.93P

http://adsabs.harvard.edu/abs/1977MNRAS.181P..93L

Cite this

@article{ca9f9f3b8c68426fab844eed0af4db3c,

title = "Ariel V sky survey - X-ray variability of NGC 5128",

abstract = "Long-term monitoring of the X-ray source associated with the nucleus of NGC 5128 has produced the most complete light curve in any frequency band for this peculiar active galaxy. The X-ray data indicate activity on at least two time scales: (1) a slow outburst with a time scale of 4-7 yr, (2) superimposed flares with a time scale of 20-50 day. This pattern of behavior is related to other X-ray active galaxies: specifically NGC 4151 (Seyfert) and MKN 421 (BL Lac). Some similarities are noted.",

keywords = "Ariel Satellites, Black Holes (Astronomy), Galactic Nuclei, Light Curve, Sky Surveys (Astronomy), X Ray Sources, Active Galaxies, Centaurus Constellation, Frequencies, Galactic Radiation, Peculiar Galaxies, Radiant Flux Density, Radioactivity, Seyfert Galaxies, Spectral Bands, Time, Variability",

author = "A. Lawrence and Pye, \{J. P.\} and M. Elvis",

year = "1977",

month = dec,

day = "1",

doi = "10.1093/mnras/181.1.93P",

language = "English",

volume = "181",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

}

TY - JOUR

T1 - Ariel V sky survey - X-ray variability of NGC 5128

AU - Lawrence, A.

AU - Pye, J. P.

AU - Elvis, M.

PY - 1977/12/1

Y1 - 1977/12/1

N2 - Long-term monitoring of the X-ray source associated with the nucleus of NGC 5128 has produced the most complete light curve in any frequency band for this peculiar active galaxy. The X-ray data indicate activity on at least two time scales: (1) a slow outburst with a time scale of 4-7 yr, (2) superimposed flares with a time scale of 20-50 day. This pattern of behavior is related to other X-ray active galaxies: specifically NGC 4151 (Seyfert) and MKN 421 (BL Lac). Some similarities are noted.

AB - Long-term monitoring of the X-ray source associated with the nucleus of NGC 5128 has produced the most complete light curve in any frequency band for this peculiar active galaxy. The X-ray data indicate activity on at least two time scales: (1) a slow outburst with a time scale of 4-7 yr, (2) superimposed flares with a time scale of 20-50 day. This pattern of behavior is related to other X-ray active galaxies: specifically NGC 4151 (Seyfert) and MKN 421 (BL Lac). Some similarities are noted.

KW - Ariel Satellites

KW - Black Holes (Astronomy)

KW - Galactic Nuclei

KW - Light Curve

KW - Sky Surveys (Astronomy)

KW - X Ray Sources

KW - Active Galaxies

KW - Centaurus Constellation

KW - Frequencies

KW - Galactic Radiation

KW - Peculiar Galaxies

KW - Radiant Flux Density

KW - Radioactivity

KW - Seyfert Galaxies

KW - Spectral Bands

KW - Time

KW - Variability

U2 - 10.1093/mnras/181.1.93P

DO - 10.1093/mnras/181.1.93P

M3 - Article

SN - 0035-8711

VL - 181

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

Ariel V sky survey - X-ray variability of NGC 5128

Abstract

Keywords / Materials (for Non-textual outputs)

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