Monitoring the Ha Line in BL Lacertae - Evidence for an Accretion Disk

E.A. Corbett; A. Robinson; J. Hough; D.J. Axon

Monitoring the Ha Line in BL Lacertae - Evidence for an Accretion Disk

E.A. Corbett, A. Robinson, J. Hough, D.J. Axon

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Abstract

We present new spectroscopic observations of the recently discovered broad Ha line in BL Lacertae. These data, obtained over a period of 30 months, indicate that the line equivalent width is anti-correlated with the continuum flux, implying that the broad line emission is not powered primarily by synchroton emission from the relativistic jet. The most probable explanation is that the broad line region in BL Lacertae is photoionized by continuum emission from an accretion disk which at optical wavelengths is dominated by the Doppler beamed synchroton continuum.

Original language	English
Title of host publication	In: Procs of Structure and Kinematics of Quasar Broad Line Regions, ASP Conference Series 175
Publisher	Astronomical Society of the Pacific
Pages	149-156
ISBN (Print)	1-886733-97-X
Publication status	Published - 1999

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@inproceedings{6db668761be048d79e84c40e353a7f1d,

title = "Monitoring the Ha Line in BL Lacertae - Evidence for an Accretion Disk",

abstract = "We present new spectroscopic observations of the recently discovered broad Ha line in BL Lacertae. These data, obtained over a period of 30 months, indicate that the line equivalent width is anti-correlated with the continuum flux, implying that the broad line emission is not powered primarily by synchroton emission from the relativistic jet. The most probable explanation is that the broad line region in BL Lacertae is photoionized by continuum emission from an accretion disk which at optical wavelengths is dominated by the Doppler beamed synchroton continuum.",

author = "E.A. Corbett and A. Robinson and J. Hough and D.J. Axon",

note = "Original paper can be found at: http://161.58.115.79/pubs/cs/156-194.html--Copyright Astronomical Society of the Pacific",

year = "1999",

language = "English",

isbn = "1-886733-97-X",

pages = "149--156",

booktitle = "In: Procs of Structure and Kinematics of Quasar Broad Line Regions, ASP Conference Series 175",

publisher = "Astronomical Society of the Pacific",

address = "United States",

}

TY - GEN

T1 - Monitoring the Ha Line in BL Lacertae - Evidence for an Accretion Disk

AU - Corbett, E.A.

AU - Robinson, A.

AU - Hough, J.

AU - Axon, D.J.

N1 - Original paper can be found at: http://161.58.115.79/pubs/cs/156-194.html--Copyright Astronomical Society of the Pacific

PY - 1999

Y1 - 1999

N2 - We present new spectroscopic observations of the recently discovered broad Ha line in BL Lacertae. These data, obtained over a period of 30 months, indicate that the line equivalent width is anti-correlated with the continuum flux, implying that the broad line emission is not powered primarily by synchroton emission from the relativistic jet. The most probable explanation is that the broad line region in BL Lacertae is photoionized by continuum emission from an accretion disk which at optical wavelengths is dominated by the Doppler beamed synchroton continuum.

AB - We present new spectroscopic observations of the recently discovered broad Ha line in BL Lacertae. These data, obtained over a period of 30 months, indicate that the line equivalent width is anti-correlated with the continuum flux, implying that the broad line emission is not powered primarily by synchroton emission from the relativistic jet. The most probable explanation is that the broad line region in BL Lacertae is photoionized by continuum emission from an accretion disk which at optical wavelengths is dominated by the Doppler beamed synchroton continuum.

M3 - Conference contribution

SN - 1-886733-97-X

SP - 149

EP - 156

BT - In: Procs of Structure and Kinematics of Quasar Broad Line Regions, ASP Conference Series 175

PB - Astronomical Society of the Pacific

ER -

Monitoring the Ha Line in BL Lacertae - Evidence for an Accretion Disk

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