Multifrequency observations of the red QSO 1413 + 135

Joel N. Bregman; Marcia J. Lebofsky; Margo F. Aller; George H. Rieke; Hugh D. Aller; Philip E. Hodge; A. E. Glassgold; Patrick J. Huggins

doi:10.1038/293714a0

Multifrequency observations of the red QSO 1413 + 135

Joel N. Bregman, Marcia J. Lebofsky, Margo F. Aller, George H. Rieke, Hugh D. Aller, Philip E. Hodge, A. E. Glassgold, Patrick J. Huggins

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Abstract

The extremely red QSO 1413 + 135 shows characteristics typical of BL Lac objects - no emission lines, is embedded in a luminous galaxy, is subject to rapid radio and IR variability, has an inverted radio spectrum and shows substantial IR polarization. The rapid steepening of the nonthermal spectrum at λ < 5 μm is interpreted as synchrotron emission from an electron distribution that ends sharply at some maximum energy. The X-ray emission is probably inverse Compton radiation. We calculate that the optically thin emitting region is compact, has a large magnetic field and exhibits bulk relativistic motion towards the observer. The most energetic electrons in the emitting region have a Lorentz factor of 10²-10³.

Original language	English (US)
Pages (from-to)	714-717
Number of pages	4
Journal	Nature
Volume	293
Issue number	5835
DOIs	https://doi.org/10.1038/293714a0
State	Published - 1981

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@article{a0c40398058740ba8a38abc601fcfaf8,

title = "Multifrequency observations of the red QSO 1413 + 135",

abstract = "The extremely red QSO 1413 + 135 shows characteristics typical of BL Lac objects - no emission lines, is embedded in a luminous galaxy, is subject to rapid radio and IR variability, has an inverted radio spectrum and shows substantial IR polarization. The rapid steepening of the nonthermal spectrum at λ < 5 μm is interpreted as synchrotron emission from an electron distribution that ends sharply at some maximum energy. The X-ray emission is probably inverse Compton radiation. We calculate that the optically thin emitting region is compact, has a large magnetic field and exhibits bulk relativistic motion towards the observer. The most energetic electrons in the emitting region have a Lorentz factor of 102-103.",

author = "Bregman, {Joel N.} and Lebofsky, {Marcia J.} and Aller, {Margo F.} and Rieke, {George H.} and Aller, {Hugh D.} and Hodge, {Philip E.} and Glassgold, {A. E.} and Huggins, {Patrick J.}",

year = "1981",

doi = "10.1038/293714a0",

language = "English (US)",

volume = "293",

pages = "714--717",

journal = "Nature",

issn = "0028-0836",

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T1 - Multifrequency observations of the red QSO 1413 + 135

AU - Bregman, Joel N.

AU - Lebofsky, Marcia J.

AU - Aller, Margo F.

AU - Rieke, George H.

AU - Aller, Hugh D.

AU - Hodge, Philip E.

AU - Glassgold, A. E.

AU - Huggins, Patrick J.

PY - 1981

Y1 - 1981

N2 - The extremely red QSO 1413 + 135 shows characteristics typical of BL Lac objects - no emission lines, is embedded in a luminous galaxy, is subject to rapid radio and IR variability, has an inverted radio spectrum and shows substantial IR polarization. The rapid steepening of the nonthermal spectrum at λ < 5 μm is interpreted as synchrotron emission from an electron distribution that ends sharply at some maximum energy. The X-ray emission is probably inverse Compton radiation. We calculate that the optically thin emitting region is compact, has a large magnetic field and exhibits bulk relativistic motion towards the observer. The most energetic electrons in the emitting region have a Lorentz factor of 102-103.

AB - The extremely red QSO 1413 + 135 shows characteristics typical of BL Lac objects - no emission lines, is embedded in a luminous galaxy, is subject to rapid radio and IR variability, has an inverted radio spectrum and shows substantial IR polarization. The rapid steepening of the nonthermal spectrum at λ < 5 μm is interpreted as synchrotron emission from an electron distribution that ends sharply at some maximum energy. The X-ray emission is probably inverse Compton radiation. We calculate that the optically thin emitting region is compact, has a large magnetic field and exhibits bulk relativistic motion towards the observer. The most energetic electrons in the emitting region have a Lorentz factor of 102-103.

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ER -

Multifrequency observations of the red QSO 1413 + 135

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