Microlensing of Broad Absorption Line Quasars
The physical nature of the material responsible for the high--velocity, broad-absorption line features seen in a small fraction of quasar spectra has been the subject of debate since their discovery. This has been especially compounded by the lack of observational probes of the absorbing region. In...
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| creator | Lewis, Geraint F Belle, Kunegunda E |
| description | The physical nature of the material responsible for the high--velocity,
broad-absorption line features seen in a small fraction of quasar spectra has
been the subject of debate since their discovery. This has been especially
compounded by the lack of observational probes of the absorbing region. In this
paper we examine the role of ``microlenses'' in external galaxies on observed
variability in the profiles of broad absorption lines in multiply-imaged
quasars. Utilizing realistic models for both the broad absorption line region
and the action of an ensemble of microlensing masses, we demonstrate that stars
at cosmological distances can provide an important probe of the physical state
and structure of material at the heart of these complex systems. Applying these
results to the macrolensed BAL quasar system, H1413+117, the observed spectral
variations are readily reproduced, but without the fine-tuning requirements of
earlier studies which employ more simplistic models. |
| doi_str_mv | 10.48550/arxiv.astro-ph/9711017 |
| format | Article |
| fullrecord | <record><control><sourceid>arxiv_GOX</sourceid><recordid>TN_cdi_arxiv_primary_astro_ph_9711017</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>astro_ph_9711017</sourcerecordid><originalsourceid>FETCH-arxiv_primary_astro_ph_97110173</originalsourceid><addsrcrecordid>eNpjYJA3NNAzsTA1NdBPLKrILNNLLC4pytctyNC3NDc0NDA052TQ9c1MLsrPSc0rzsxLV8hPU3Aqyk9MUXBMKs4vKijJzM9T8MnMS1UILE0sTiwq5mFgTUvMKU7lhdLcDKpuriHOHrpg4-MLijJzE4sq48HWxBdkxEOtMSZWHQAcyzhg</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Microlensing of Broad Absorption Line Quasars</title><source>arXiv.org</source><creator>Lewis, Geraint F ; Belle, Kunegunda E</creator><creatorcontrib>Lewis, Geraint F ; Belle, Kunegunda E</creatorcontrib><description>The physical nature of the material responsible for the high--velocity,
broad-absorption line features seen in a small fraction of quasar spectra has
been the subject of debate since their discovery. This has been especially
compounded by the lack of observational probes of the absorbing region. In this
paper we examine the role of ``microlenses'' in external galaxies on observed
variability in the profiles of broad absorption lines in multiply-imaged
quasars. Utilizing realistic models for both the broad absorption line region
and the action of an ensemble of microlensing masses, we demonstrate that stars
at cosmological distances can provide an important probe of the physical state
and structure of material at the heart of these complex systems. Applying these
results to the macrolensed BAL quasar system, H1413+117, the observed spectral
variations are readily reproduced, but without the fine-tuning requirements of
earlier studies which employ more simplistic models.</description><identifier>DOI: 10.48550/arxiv.astro-ph/9711017</identifier><language>eng</language><subject>Physics - Astrophysics of Galaxies ; Physics - Cosmology and Nongalactic Astrophysics ; Physics - Earth and Planetary Astrophysics ; Physics - High Energy Astrophysical Phenomena ; Physics - Instrumentation and Methods for Astrophysics ; Physics - Solar and Stellar Astrophysics</subject><creationdate>1997-11</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,885</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/astro-ph/9711017$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.1046/j.1365-8711.1998.01415.x$$DView published paper (Access to full text may be restricted)$$Hfree_for_read</backlink><backlink>$$Uhttps://doi.org/10.48550/arXiv.astro-ph/9711017$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Lewis, Geraint F</creatorcontrib><creatorcontrib>Belle, Kunegunda E</creatorcontrib><title>Microlensing of Broad Absorption Line Quasars</title><description>The physical nature of the material responsible for the high--velocity,
broad-absorption line features seen in a small fraction of quasar spectra has
been the subject of debate since their discovery. This has been especially
compounded by the lack of observational probes of the absorbing region. In this
paper we examine the role of ``microlenses'' in external galaxies on observed
variability in the profiles of broad absorption lines in multiply-imaged
quasars. Utilizing realistic models for both the broad absorption line region
and the action of an ensemble of microlensing masses, we demonstrate that stars
at cosmological distances can provide an important probe of the physical state
and structure of material at the heart of these complex systems. Applying these
results to the macrolensed BAL quasar system, H1413+117, the observed spectral
variations are readily reproduced, but without the fine-tuning requirements of
earlier studies which employ more simplistic models.</description><subject>Physics - Astrophysics of Galaxies</subject><subject>Physics - Cosmology and Nongalactic Astrophysics</subject><subject>Physics - Earth and Planetary Astrophysics</subject><subject>Physics - High Energy Astrophysical Phenomena</subject><subject>Physics - Instrumentation and Methods for Astrophysics</subject><subject>Physics - Solar and Stellar Astrophysics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNpjYJA3NNAzsTA1NdBPLKrILNNLLC4pytctyNC3NDc0NDA052TQ9c1MLsrPSc0rzsxLV8hPU3Aqyk9MUXBMKs4vKijJzM9T8MnMS1UILE0sTiwq5mFgTUvMKU7lhdLcDKpuriHOHrpg4-MLijJzE4sq48HWxBdkxEOtMSZWHQAcyzhg</recordid><startdate>19971103</startdate><enddate>19971103</enddate><creator>Lewis, Geraint F</creator><creator>Belle, Kunegunda E</creator><scope>GOX</scope></search><sort><creationdate>19971103</creationdate><title>Microlensing of Broad Absorption Line Quasars</title><author>Lewis, Geraint F ; Belle, Kunegunda E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-arxiv_primary_astro_ph_97110173</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>Physics - Astrophysics of Galaxies</topic><topic>Physics - Cosmology and Nongalactic Astrophysics</topic><topic>Physics - Earth and Planetary Astrophysics</topic><topic>Physics - High Energy Astrophysical Phenomena</topic><topic>Physics - Instrumentation and Methods for Astrophysics</topic><topic>Physics - Solar and Stellar Astrophysics</topic><toplevel>online_resources</toplevel><creatorcontrib>Lewis, Geraint F</creatorcontrib><creatorcontrib>Belle, Kunegunda E</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Lewis, Geraint F</au><au>Belle, Kunegunda E</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microlensing of Broad Absorption Line Quasars</atitle><date>1997-11-03</date><risdate>1997</risdate><abstract>The physical nature of the material responsible for the high--velocity,
broad-absorption line features seen in a small fraction of quasar spectra has
been the subject of debate since their discovery. This has been especially
compounded by the lack of observational probes of the absorbing region. In this
paper we examine the role of ``microlenses'' in external galaxies on observed
variability in the profiles of broad absorption lines in multiply-imaged
quasars. Utilizing realistic models for both the broad absorption line region
and the action of an ensemble of microlensing masses, we demonstrate that stars
at cosmological distances can provide an important probe of the physical state
and structure of material at the heart of these complex systems. Applying these
results to the macrolensed BAL quasar system, H1413+117, the observed spectral
variations are readily reproduced, but without the fine-tuning requirements of
earlier studies which employ more simplistic models.</abstract><doi>10.48550/arxiv.astro-ph/9711017</doi><oa>free_for_read</oa></addata></record> |
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| identifier | DOI: 10.48550/arxiv.astro-ph/9711017 |
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| language | eng |
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| subjects | Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics Physics - Earth and Planetary Astrophysics Physics - High Energy Astrophysical Phenomena Physics - Instrumentation and Methods for Astrophysics Physics - Solar and Stellar Astrophysics |
| title | Microlensing of Broad Absorption Line Quasars |
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