A compact extreme scattering event cloud toward ao 0235 + 164

C. E. Senkbeil; S. P. Ellingsen; J. E.J. Lovell; J. P. Macquart; G. Cimò; D. L. Jauncey

doi:10.1086/527300

A compact extreme scattering event cloud toward ao 0235 + 164

C. E. Senkbeil
, S. P. Ellingsen
, J. E.J. Lovell
, J. P. Macquart
, G. Cimò
, D. L. Jauncey

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

13 Citations (Scopus)

Abstract

We present observations of a rare, rapid, high-amplitude extreme scattering event toward the compact BL Lac object AO 0235+164 at 6.65 GHz. The ESE cloud is compact; we estimate its diameter between 0.09 and 0.9 AU, with a distance of less than 3.6 kpc. Limits on the angular extent of the ESE cloud imply a minimum cloud electron density of ∼4 x 10³ cm^-3. Based on the amplitude and timescale of the ESE observed here, we suggest that at least one of the transients reported by Bower et al. may be attributed to ESEs.

Original language	English
Pages (from-to)	L95-L98
Journal	Astrophysical Journal
Volume	672
Issue number	2 PART 2
DOIs	https://doi.org/10.1086/527300
Publication status	Published - 2008
Externally published	Yes

Funding

Funders	Funder number
ARC Australian Research Council	DP0342500

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10.1086/527300

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@article{aedce087662c47f19648dba813c78e25,

title = "A compact extreme scattering event cloud toward ao 0235 + 164",

abstract = "We present observations of a rare, rapid, high-amplitude extreme scattering event toward the compact BL Lac object AO 0235+164 at 6.65 GHz. The ESE cloud is compact; we estimate its diameter between 0.09 and 0.9 AU, with a distance of less than 3.6 kpc. Limits on the angular extent of the ESE cloud imply a minimum cloud electron density of ∼4 x 103 cm-3. Based on the amplitude and timescale of the ESE observed here, we suggest that at least one of the transients reported by Bower et al. may be attributed to ESEs.",

keywords = "Galaxies: Active, Ism: Structure, Online material: Color figures",

author = "Senkbeil, \{C. E.\} and Ellingsen, \{S. P.\} and Lovell, \{J. E.J.\} and Macquart, \{J. P.\} and G. Cim{\`o} and Jauncey, \{D. L.\}",

year = "2008",

doi = "10.1086/527300",

language = "English",

volume = "672",

pages = "L95--L98",

journal = "Astrophysical Journal",

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publisher = "American Astronomical Society",

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TY - JOUR

T1 - A compact extreme scattering event cloud toward ao 0235 + 164

AU - Senkbeil, C. E.

AU - Ellingsen, S. P.

AU - Lovell, J. E.J.

AU - Macquart, J. P.

AU - Cimò, G.

AU - Jauncey, D. L.

PY - 2008

Y1 - 2008

N2 - We present observations of a rare, rapid, high-amplitude extreme scattering event toward the compact BL Lac object AO 0235+164 at 6.65 GHz. The ESE cloud is compact; we estimate its diameter between 0.09 and 0.9 AU, with a distance of less than 3.6 kpc. Limits on the angular extent of the ESE cloud imply a minimum cloud electron density of ∼4 x 103 cm-3. Based on the amplitude and timescale of the ESE observed here, we suggest that at least one of the transients reported by Bower et al. may be attributed to ESEs.

AB - We present observations of a rare, rapid, high-amplitude extreme scattering event toward the compact BL Lac object AO 0235+164 at 6.65 GHz. The ESE cloud is compact; we estimate its diameter between 0.09 and 0.9 AU, with a distance of less than 3.6 kpc. Limits on the angular extent of the ESE cloud imply a minimum cloud electron density of ∼4 x 103 cm-3. Based on the amplitude and timescale of the ESE observed here, we suggest that at least one of the transients reported by Bower et al. may be attributed to ESEs.

KW - Galaxies: Active

KW - Ism: Structure

KW - Online material: Color figures

UR - https://www.scopus.com/pages/publications/67549114599

U2 - 10.1086/527300

DO - 10.1086/527300

M3 - Article

AN - SCOPUS:67549114599

SN - 0004-637X

VL - 672

SP - L95-L98

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART 2

ER -

A compact extreme scattering event cloud toward ao 0235 + 164

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