Lorentz Factor Evolution Patterns within Relativistic Jets of GRBs and AGNs
The Lorentz factor (Γ) is an important parameter related to the relativistic jet physics. We study the evolution patterns of Γ within gamma-ray burst (GRB) and active galactic nuclear jets for individual GRB 090168, GRB 140508A, and 3C 454.3. By estimating the Γ values for well-separated pulses in G...
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| Veröffentlicht in: | Proceedings of the International Astronomical Union 2016-09, Vol.12 (S324), p.78-81 |
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| container_title | Proceedings of the International Astronomical Union |
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| creator | Zhang, Hai-Ming Lin, Da-Bin Lin, Ting-Ting Liu, Bao-Rong Huang, Xiao-Li Zhong, Shu-Qing Lu, Rui-Jing Liang, En-Wei |
| description | The Lorentz factor (Γ) is an important parameter related to the relativistic jet physics. We study the evolution patterns of Γ within gamma-ray burst (GRB) and active galactic nuclear jets for individual GRB 090168, GRB 140508A, and 3C 454.3. By estimating the Γ values for well-separated pulses in GRBs 090618 and 140508A with an empirical relation derived from typical GRBs, we find that the Γ evolution pattern in the two GRBs are different. The increasing-to-coasting evolution pattern of Γ in GRB 090618 likely indicates that the GRB fireball is still being accelerated in the prompt phase. The clear decrease evolution pattern of Γ in GRB 140508A suggests the deceleration of the fireball components. By deriving the Γ value through fitting their spectral energy distribution in different flares of 3C 454.3, a pattern of Γ-tracking-γ-ray flux is clearly found, likely indicating that the observed gamma-ray flares are being due to the Doppler boosting effect to the jet emission. |
| doi_str_mv | 10.1017/S1743921317001260 |
| format | Article |
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We study the evolution patterns of Γ within gamma-ray burst (GRB) and active galactic nuclear jets for individual GRB 090168, GRB 140508A, and 3C 454.3. By estimating the Γ values for well-separated pulses in GRBs 090618 and 140508A with an empirical relation derived from typical GRBs, we find that the Γ evolution pattern in the two GRBs are different. The increasing-to-coasting evolution pattern of Γ in GRB 090618 likely indicates that the GRB fireball is still being accelerated in the prompt phase. The clear decrease evolution pattern of Γ in GRB 140508A suggests the deceleration of the fireball components. By deriving the Γ value through fitting their spectral energy distribution in different flares of 3C 454.3, a pattern of Γ-tracking-γ-ray flux is clearly found, likely indicating that the observed gamma-ray flares are being due to the Doppler boosting effect to the jet emission.</description><identifier>ISSN: 1743-9213</identifier><identifier>EISSN: 1743-9221</identifier><identifier>DOI: 10.1017/S1743921317001260</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Astronomy ; Bursting ; Coasting ; Contributed Papers ; Deceleration ; Doppler effect ; Emission ; Energy ; Fittings ; Flares ; Fluctuations ; Flux ; Galactic evolution ; Gamma ray bursts ; Gamma rays ; Jets ; Lorentz factor ; Physics ; Relativism ; Spectral energy distribution</subject><ispartof>Proceedings of the International Astronomical Union, 2016-09, Vol.12 (S324), p.78-81</ispartof><rights>Copyright © International Astronomical Union 2017</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c312t-949fc550c17f18d49b1884f83eb5c573fe5ea00c620a3dee1ead6d1a666d5c403</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S1743921317001260/type/journal_article$$EHTML$$P50$$Gcambridge$$H</linktohtml><link.rule.ids>164,314,780,784,27924,27925,55628</link.rule.ids></links><search><creatorcontrib>Zhang, Hai-Ming</creatorcontrib><creatorcontrib>Lin, Da-Bin</creatorcontrib><creatorcontrib>Lin, Ting-Ting</creatorcontrib><creatorcontrib>Liu, Bao-Rong</creatorcontrib><creatorcontrib>Huang, Xiao-Li</creatorcontrib><creatorcontrib>Zhong, Shu-Qing</creatorcontrib><creatorcontrib>Lu, Rui-Jing</creatorcontrib><creatorcontrib>Liang, En-Wei</creatorcontrib><title>Lorentz Factor Evolution Patterns within Relativistic Jets of GRBs and AGNs</title><title>Proceedings of the International Astronomical Union</title><addtitle>Proc. IAU</addtitle><description>The Lorentz factor (Γ) is an important parameter related to the relativistic jet physics. We study the evolution patterns of Γ within gamma-ray burst (GRB) and active galactic nuclear jets for individual GRB 090168, GRB 140508A, and 3C 454.3. By estimating the Γ values for well-separated pulses in GRBs 090618 and 140508A with an empirical relation derived from typical GRBs, we find that the Γ evolution pattern in the two GRBs are different. The increasing-to-coasting evolution pattern of Γ in GRB 090618 likely indicates that the GRB fireball is still being accelerated in the prompt phase. The clear decrease evolution pattern of Γ in GRB 140508A suggests the deceleration of the fireball components. By deriving the Γ value through fitting their spectral energy distribution in different flares of 3C 454.3, a pattern of Γ-tracking-γ-ray flux is clearly found, likely indicating that the observed gamma-ray flares are being due to the Doppler boosting effect to the jet emission.</description><subject>Astronomy</subject><subject>Bursting</subject><subject>Coasting</subject><subject>Contributed Papers</subject><subject>Deceleration</subject><subject>Doppler effect</subject><subject>Emission</subject><subject>Energy</subject><subject>Fittings</subject><subject>Flares</subject><subject>Fluctuations</subject><subject>Flux</subject><subject>Galactic evolution</subject><subject>Gamma ray bursts</subject><subject>Gamma rays</subject><subject>Jets</subject><subject>Lorentz factor</subject><subject>Physics</subject><subject>Relativism</subject><subject>Spectral energy distribution</subject><issn>1743-9213</issn><issn>1743-9221</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kEtLAzEUhYMoWKs_wF3A9WhuXjOzrKXWR1Gpuh7SPDSlndQkreivt6VFBHF1LofznQsHoVMg50CgvHiCkrOaAoOSEKCS7KHOxipqSmH_5wZ2iI5SmhLCZcVEB92NQrRt_sJXSucQ8WAVZsvsQ4sfVc42tgl_-PzmWzy2M5X9yqfsNb61OeHg8HB8mbBqDe4N79MxOnBqluzJTrvo5Wrw3L8uRg_Dm35vVGgGNBc1r50WgmgoHVSG1xOoKu4qZidCi5I5K6wiREtKFDPWglVGGlBSSiM0J6yLzra9ixjelzblZhqWsV2_bKAGKjglnK1TsE3pGFKK1jWL6OcqfjZAms1mzZ_N1gzbMWo-id682l_V_1Lf5Dps1A</recordid><startdate>20160901</startdate><enddate>20160901</enddate><creator>Zhang, Hai-Ming</creator><creator>Lin, Da-Bin</creator><creator>Lin, Ting-Ting</creator><creator>Liu, Bao-Rong</creator><creator>Huang, Xiao-Li</creator><creator>Zhong, Shu-Qing</creator><creator>Lu, Rui-Jing</creator><creator>Liang, En-Wei</creator><general>Cambridge University Press</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>L7M</scope><scope>M2P</scope><scope>P5Z</scope><scope>P62</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>Q9U</scope></search><sort><creationdate>20160901</creationdate><title>Lorentz Factor Evolution Patterns within Relativistic Jets of GRBs and AGNs</title><author>Zhang, Hai-Ming ; Lin, Da-Bin ; Lin, Ting-Ting ; Liu, Bao-Rong ; Huang, Xiao-Li ; Zhong, Shu-Qing ; Lu, Rui-Jing ; Liang, En-Wei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c312t-949fc550c17f18d49b1884f83eb5c573fe5ea00c620a3dee1ead6d1a666d5c403</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Astronomy</topic><topic>Bursting</topic><topic>Coasting</topic><topic>Contributed Papers</topic><topic>Deceleration</topic><topic>Doppler effect</topic><topic>Emission</topic><topic>Energy</topic><topic>Fittings</topic><topic>Flares</topic><topic>Fluctuations</topic><topic>Flux</topic><topic>Galactic evolution</topic><topic>Gamma ray bursts</topic><topic>Gamma rays</topic><topic>Jets</topic><topic>Lorentz factor</topic><topic>Physics</topic><topic>Relativism</topic><topic>Spectral energy distribution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Hai-Ming</creatorcontrib><creatorcontrib>Lin, Da-Bin</creatorcontrib><creatorcontrib>Lin, Ting-Ting</creatorcontrib><creatorcontrib>Liu, Bao-Rong</creatorcontrib><creatorcontrib>Huang, Xiao-Li</creatorcontrib><creatorcontrib>Zhong, Shu-Qing</creatorcontrib><creatorcontrib>Lu, Rui-Jing</creatorcontrib><creatorcontrib>Liang, En-Wei</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</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>ProQuest Central Student</collection><collection>Aerospace Database</collection><collection>SciTech Premium Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Science Database</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</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>ProQuest Central Basic</collection><jtitle>Proceedings of the International Astronomical Union</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Hai-Ming</au><au>Lin, Da-Bin</au><au>Lin, Ting-Ting</au><au>Liu, Bao-Rong</au><au>Huang, Xiao-Li</au><au>Zhong, Shu-Qing</au><au>Lu, Rui-Jing</au><au>Liang, En-Wei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Lorentz Factor Evolution Patterns within Relativistic Jets of GRBs and AGNs</atitle><jtitle>Proceedings of the International Astronomical Union</jtitle><addtitle>Proc. IAU</addtitle><date>2016-09-01</date><risdate>2016</risdate><volume>12</volume><issue>S324</issue><spage>78</spage><epage>81</epage><pages>78-81</pages><issn>1743-9213</issn><eissn>1743-9221</eissn><abstract>The Lorentz factor (Γ) is an important parameter related to the relativistic jet physics. We study the evolution patterns of Γ within gamma-ray burst (GRB) and active galactic nuclear jets for individual GRB 090168, GRB 140508A, and 3C 454.3. By estimating the Γ values for well-separated pulses in GRBs 090618 and 140508A with an empirical relation derived from typical GRBs, we find that the Γ evolution pattern in the two GRBs are different. The increasing-to-coasting evolution pattern of Γ in GRB 090618 likely indicates that the GRB fireball is still being accelerated in the prompt phase. The clear decrease evolution pattern of Γ in GRB 140508A suggests the deceleration of the fireball components. By deriving the Γ value through fitting their spectral energy distribution in different flares of 3C 454.3, a pattern of Γ-tracking-γ-ray flux is clearly found, likely indicating that the observed gamma-ray flares are being due to the Doppler boosting effect to the jet emission.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1017/S1743921317001260</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Astronomy Bursting Coasting Contributed Papers Deceleration Doppler effect Emission Energy Fittings Flares Fluctuations Flux Galactic evolution Gamma ray bursts Gamma rays Jets Lorentz factor Physics Relativism Spectral energy distribution |
| title | Lorentz Factor Evolution Patterns within Relativistic Jets of GRBs and AGNs |
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