Orbital variability of the optical linear polarization of the \(\gamma\)-ray binary LS I +61 303 and new constraints on the orbital parameters
We studied the variability of the linear polarization and brightness of the \(\gamma\)-ray binary LS I +61 303. High-precision BVR photopolarimetric observations were carried out with the Dipol-2 polarimeter on the 2.2 m remotely controlled UH88 telescope at Mauna Kea Observatory and the 60 cm Tohok...
Gespeichert in:
| Veröffentlicht in: | arXiv.org 2020-10 |
|---|---|
| Hauptverfasser: | , , , , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | arXiv.org |
| container_volume | |
| creator | Kravtsov, Vadim Berdyugin, Andrei V Piirola, Vilppu Kosenkov, Ilia A Tsygankov, Sergey S Chernyakova, Maria Malyshev, Denys Sakanoi, Takeshi Kagitani, Masato Berdyugina, Svetlana V Poutanen, Juri |
| description | We studied the variability of the linear polarization and brightness of the \(\gamma\)-ray binary LS I +61 303. High-precision BVR photopolarimetric observations were carried out with the Dipol-2 polarimeter on the 2.2 m remotely controlled UH88 telescope at Mauna Kea Observatory and the 60 cm Tohoku telescope at Haleakala Observatory (Hawaii) over 140 nights in 2016--2019. We determined the position angle of the intrinsic polarization \(\theta \simeq 11^\circ\), which can either be associated with the projection of the Be star's decretion disk axis on the plane of sky, or can differ from it by \(90^\circ\). Using the Lomb-Scargle method, we performed timing analyses and period searches of our polarimetric and photometric data. We found statistically significant periodic variability of the normalized Stokes parameters \(q\) and \(u\) in all passbands. The most significant period of variability, \(P_\text{Pol} = 13.244 \pm 0.012\) d, is equal to one half of the orbital period \(P_\text{orb} = 26.496\) d. Using a model of Thomson scattering by a cloud that orbits the Be star, we obtained constraints on the orbital parameters, including a small eccentricity \(e |
| doi_str_mv | 10.48550/arxiv.2010.00999 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest</sourceid><recordid>TN_cdi_proquest_journals_2448486862</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2448486862</sourcerecordid><originalsourceid>FETCH-proquest_journals_24484868623</originalsourceid><addsrcrecordid>eNqNjcFKAzEURYMgWLQf4O6BG0WmzSSZMbMWxYLgoi4HypuaakomGV_S6vgRfrNB6t7VhXsP9zB2XvKZ0lXF50ifdj8TPBecN01zxCZCyrLQSogTNo1xyzkX9Y2oKjlh30_U2YQO9kgWO-tsGiFsIL0ZCEOy6zw56w0SDMFl5guTDf4PaS_bV-x7bK8KwhE665FGeFzCAq7rEiSXgP4FvPmAdfAxEVqfIuSDX8HBPSBhb5KheMaON-iimR7ylF3c3z3fPhQDhfediWm1DTvyeVoJpbTSta6F_B_1A8DoWlI</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2448486862</pqid></control><display><type>article</type><title>Orbital variability of the optical linear polarization of the \(\gamma\)-ray binary LS I +61 303 and new constraints on the orbital parameters</title><source>Free E- Journals</source><creator>Kravtsov, Vadim ; Berdyugin, Andrei V ; Piirola, Vilppu ; Kosenkov, Ilia A ; Tsygankov, Sergey S ; Chernyakova, Maria ; Malyshev, Denys ; Sakanoi, Takeshi ; Kagitani, Masato ; Berdyugina, Svetlana V ; Poutanen, Juri</creator><creatorcontrib>Kravtsov, Vadim ; Berdyugin, Andrei V ; Piirola, Vilppu ; Kosenkov, Ilia A ; Tsygankov, Sergey S ; Chernyakova, Maria ; Malyshev, Denys ; Sakanoi, Takeshi ; Kagitani, Masato ; Berdyugina, Svetlana V ; Poutanen, Juri</creatorcontrib><description>We studied the variability of the linear polarization and brightness of the \(\gamma\)-ray binary LS I +61 303. High-precision BVR photopolarimetric observations were carried out with the Dipol-2 polarimeter on the 2.2 m remotely controlled UH88 telescope at Mauna Kea Observatory and the 60 cm Tohoku telescope at Haleakala Observatory (Hawaii) over 140 nights in 2016--2019. We determined the position angle of the intrinsic polarization \(\theta \simeq 11^\circ\), which can either be associated with the projection of the Be star's decretion disk axis on the plane of sky, or can differ from it by \(90^\circ\). Using the Lomb-Scargle method, we performed timing analyses and period searches of our polarimetric and photometric data. We found statistically significant periodic variability of the normalized Stokes parameters \(q\) and \(u\) in all passbands. The most significant period of variability, \(P_\text{Pol} = 13.244 \pm 0.012\) d, is equal to one half of the orbital period \(P_\text{orb} = 26.496\) d. Using a model of Thomson scattering by a cloud that orbits the Be star, we obtained constraints on the orbital parameters, including a small eccentricity \(e<0.2\) and periastron phase of \(\phi_\text{p}\approx 0.6\), which coincides with the peaks in the radio, X-ray, and TeV emission. These constraints are independent of the assumption about the orientation of the decretion disk plane on the sky. We also extensively discuss the apparent inconsistency with the previous measurements of the orbital parameters from radial velocities. By folding the photometry data acquired during a three-year time span with the orbital period, we found a linear phase shift of the moments of the brightness maximum, confirming the possible existence of superorbital variability.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.2010.00999</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>B stars ; Brightness ; Data acquisition ; Gamma rays ; Linear phase ; Linear polarization ; Observatories ; Orbits ; Photometry ; Polarimeters ; Polarimetry ; Remote control ; Stokes parameters ; Thomson scattering</subject><ispartof>arXiv.org, 2020-10</ispartof><rights>2020. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><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>777,781,27906</link.rule.ids></links><search><creatorcontrib>Kravtsov, Vadim</creatorcontrib><creatorcontrib>Berdyugin, Andrei V</creatorcontrib><creatorcontrib>Piirola, Vilppu</creatorcontrib><creatorcontrib>Kosenkov, Ilia A</creatorcontrib><creatorcontrib>Tsygankov, Sergey S</creatorcontrib><creatorcontrib>Chernyakova, Maria</creatorcontrib><creatorcontrib>Malyshev, Denys</creatorcontrib><creatorcontrib>Sakanoi, Takeshi</creatorcontrib><creatorcontrib>Kagitani, Masato</creatorcontrib><creatorcontrib>Berdyugina, Svetlana V</creatorcontrib><creatorcontrib>Poutanen, Juri</creatorcontrib><title>Orbital variability of the optical linear polarization of the \(\gamma\)-ray binary LS I +61 303 and new constraints on the orbital parameters</title><title>arXiv.org</title><description>We studied the variability of the linear polarization and brightness of the \(\gamma\)-ray binary LS I +61 303. High-precision BVR photopolarimetric observations were carried out with the Dipol-2 polarimeter on the 2.2 m remotely controlled UH88 telescope at Mauna Kea Observatory and the 60 cm Tohoku telescope at Haleakala Observatory (Hawaii) over 140 nights in 2016--2019. We determined the position angle of the intrinsic polarization \(\theta \simeq 11^\circ\), which can either be associated with the projection of the Be star's decretion disk axis on the plane of sky, or can differ from it by \(90^\circ\). Using the Lomb-Scargle method, we performed timing analyses and period searches of our polarimetric and photometric data. We found statistically significant periodic variability of the normalized Stokes parameters \(q\) and \(u\) in all passbands. The most significant period of variability, \(P_\text{Pol} = 13.244 \pm 0.012\) d, is equal to one half of the orbital period \(P_\text{orb} = 26.496\) d. Using a model of Thomson scattering by a cloud that orbits the Be star, we obtained constraints on the orbital parameters, including a small eccentricity \(e<0.2\) and periastron phase of \(\phi_\text{p}\approx 0.6\), which coincides with the peaks in the radio, X-ray, and TeV emission. These constraints are independent of the assumption about the orientation of the decretion disk plane on the sky. We also extensively discuss the apparent inconsistency with the previous measurements of the orbital parameters from radial velocities. By folding the photometry data acquired during a three-year time span with the orbital period, we found a linear phase shift of the moments of the brightness maximum, confirming the possible existence of superorbital variability.</description><subject>B stars</subject><subject>Brightness</subject><subject>Data acquisition</subject><subject>Gamma rays</subject><subject>Linear phase</subject><subject>Linear polarization</subject><subject>Observatories</subject><subject>Orbits</subject><subject>Photometry</subject><subject>Polarimeters</subject><subject>Polarimetry</subject><subject>Remote control</subject><subject>Stokes parameters</subject><subject>Thomson scattering</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNqNjcFKAzEURYMgWLQf4O6BG0WmzSSZMbMWxYLgoi4HypuaakomGV_S6vgRfrNB6t7VhXsP9zB2XvKZ0lXF50ifdj8TPBecN01zxCZCyrLQSogTNo1xyzkX9Y2oKjlh30_U2YQO9kgWO-tsGiFsIL0ZCEOy6zw56w0SDMFl5guTDf4PaS_bV-x7bK8KwhE665FGeFzCAq7rEiSXgP4FvPmAdfAxEVqfIuSDX8HBPSBhb5KheMaON-iimR7ylF3c3z3fPhQDhfediWm1DTvyeVoJpbTSta6F_B_1A8DoWlI</recordid><startdate>20201002</startdate><enddate>20201002</enddate><creator>Kravtsov, Vadim</creator><creator>Berdyugin, Andrei V</creator><creator>Piirola, Vilppu</creator><creator>Kosenkov, Ilia A</creator><creator>Tsygankov, Sergey S</creator><creator>Chernyakova, Maria</creator><creator>Malyshev, Denys</creator><creator>Sakanoi, Takeshi</creator><creator>Kagitani, Masato</creator><creator>Berdyugina, Svetlana V</creator><creator>Poutanen, Juri</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope></search><sort><creationdate>20201002</creationdate><title>Orbital variability of the optical linear polarization of the \(\gamma\)-ray binary LS I +61 303 and new constraints on the orbital parameters</title><author>Kravtsov, Vadim ; Berdyugin, Andrei V ; Piirola, Vilppu ; Kosenkov, Ilia A ; Tsygankov, Sergey S ; Chernyakova, Maria ; Malyshev, Denys ; Sakanoi, Takeshi ; Kagitani, Masato ; Berdyugina, Svetlana V ; Poutanen, Juri</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_journals_24484868623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>B stars</topic><topic>Brightness</topic><topic>Data acquisition</topic><topic>Gamma rays</topic><topic>Linear phase</topic><topic>Linear polarization</topic><topic>Observatories</topic><topic>Orbits</topic><topic>Photometry</topic><topic>Polarimeters</topic><topic>Polarimetry</topic><topic>Remote control</topic><topic>Stokes parameters</topic><topic>Thomson scattering</topic><toplevel>online_resources</toplevel><creatorcontrib>Kravtsov, Vadim</creatorcontrib><creatorcontrib>Berdyugin, Andrei V</creatorcontrib><creatorcontrib>Piirola, Vilppu</creatorcontrib><creatorcontrib>Kosenkov, Ilia A</creatorcontrib><creatorcontrib>Tsygankov, Sergey S</creatorcontrib><creatorcontrib>Chernyakova, Maria</creatorcontrib><creatorcontrib>Malyshev, Denys</creatorcontrib><creatorcontrib>Sakanoi, Takeshi</creatorcontrib><creatorcontrib>Kagitani, Masato</creatorcontrib><creatorcontrib>Berdyugina, Svetlana V</creatorcontrib><creatorcontrib>Poutanen, Juri</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kravtsov, Vadim</au><au>Berdyugin, Andrei V</au><au>Piirola, Vilppu</au><au>Kosenkov, Ilia A</au><au>Tsygankov, Sergey S</au><au>Chernyakova, Maria</au><au>Malyshev, Denys</au><au>Sakanoi, Takeshi</au><au>Kagitani, Masato</au><au>Berdyugina, Svetlana V</au><au>Poutanen, Juri</au><format>book</format><genre>document</genre><ristype>GEN</ristype><atitle>Orbital variability of the optical linear polarization of the \(\gamma\)-ray binary LS I +61 303 and new constraints on the orbital parameters</atitle><jtitle>arXiv.org</jtitle><date>2020-10-02</date><risdate>2020</risdate><eissn>2331-8422</eissn><abstract>We studied the variability of the linear polarization and brightness of the \(\gamma\)-ray binary LS I +61 303. High-precision BVR photopolarimetric observations were carried out with the Dipol-2 polarimeter on the 2.2 m remotely controlled UH88 telescope at Mauna Kea Observatory and the 60 cm Tohoku telescope at Haleakala Observatory (Hawaii) over 140 nights in 2016--2019. We determined the position angle of the intrinsic polarization \(\theta \simeq 11^\circ\), which can either be associated with the projection of the Be star's decretion disk axis on the plane of sky, or can differ from it by \(90^\circ\). Using the Lomb-Scargle method, we performed timing analyses and period searches of our polarimetric and photometric data. We found statistically significant periodic variability of the normalized Stokes parameters \(q\) and \(u\) in all passbands. The most significant period of variability, \(P_\text{Pol} = 13.244 \pm 0.012\) d, is equal to one half of the orbital period \(P_\text{orb} = 26.496\) d. Using a model of Thomson scattering by a cloud that orbits the Be star, we obtained constraints on the orbital parameters, including a small eccentricity \(e<0.2\) and periastron phase of \(\phi_\text{p}\approx 0.6\), which coincides with the peaks in the radio, X-ray, and TeV emission. These constraints are independent of the assumption about the orientation of the decretion disk plane on the sky. We also extensively discuss the apparent inconsistency with the previous measurements of the orbital parameters from radial velocities. By folding the photometry data acquired during a three-year time span with the orbital period, we found a linear phase shift of the moments of the brightness maximum, confirming the possible existence of superorbital variability.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.2010.00999</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | EISSN: 2331-8422 |
| ispartof | arXiv.org, 2020-10 |
| issn | 2331-8422 |
| language | eng |
| recordid | cdi_proquest_journals_2448486862 |
| source | Free E- Journals |
| subjects | B stars Brightness Data acquisition Gamma rays Linear phase Linear polarization Observatories Orbits Photometry Polarimeters Polarimetry Remote control Stokes parameters Thomson scattering |
| title | Orbital variability of the optical linear polarization of the \(\gamma\)-ray binary LS I +61 303 and new constraints on the orbital parameters |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-19T21%3A29%3A26IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=document&rft.atitle=Orbital%20variability%20of%20the%20optical%20linear%20polarization%20of%20the%20%5C(%5Cgamma%5C)-ray%20binary%20LS%20I%20+61%20303%20and%20new%20constraints%20on%20the%20orbital%20parameters&rft.jtitle=arXiv.org&rft.au=Kravtsov,%20Vadim&rft.date=2020-10-02&rft.eissn=2331-8422&rft_id=info:doi/10.48550/arxiv.2010.00999&rft_dat=%3Cproquest%3E2448486862%3C/proquest%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2448486862&rft_id=info:pmid/&rfr_iscdi=true |