Possible GeV gamma-ray emission from the pulsar wind nebula in CTA 1
We report a detection of GeV $\gamma$-ray emission potentially originating from the pulsar wind nebula in CTA 1 by analyzing about 15 yr of Fermi Large Area Telescope data. By selecting an energy range from 50 GeV to 1 TeV to remove contamination from the $\gamma$-ray pulsar PSR J0007+7303, we have...
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| creator | Zhou, Liancheng Wu, Keyao Gong, Yunlu Fang, Jun |
| description | We report a detection of GeV $\gamma$-ray emission potentially originating
from the pulsar wind nebula in CTA 1 by analyzing about 15 yr of Fermi Large
Area Telescope data. By selecting an energy range from 50 GeV to 1 TeV to
remove contamination from the $\gamma$-ray pulsar PSR J0007+7303, we have
discovered an extended $\gamma$-ray source with a TS value of $\sim$ 44.94 in
the region of CTA 1. The obtained flux is measured to be 6.71 $\pm$ 2.60
$\times$ $10^{-12}$ erg $\mathrm{cm}^{-2}$ $\mathrm{s}^{-1}$ with a spectral
index of 1.61 $\pm$ 0.36, which allows for a smooth connection with the flux in
the TeV band. CTA 1 is also considered to be associated with 1LHAASO
J0007+7303u, which is an Ultra-High-Energy source listed in the recently
published catalog of the Large High Altitude Air Shower Observatory. We assume
that the radiation originates from the pulsar wind nebula and that its
multi-wavelength spectral energy distribution can be explained well with a
time-dependent one-zone model. |
| doi_str_mv | 10.48550/arxiv.2403.06109 |
| format | Article |
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from the pulsar wind nebula in CTA 1 by analyzing about 15 yr of Fermi Large
Area Telescope data. By selecting an energy range from 50 GeV to 1 TeV to
remove contamination from the $\gamma$-ray pulsar PSR J0007+7303, we have
discovered an extended $\gamma$-ray source with a TS value of $\sim$ 44.94 in
the region of CTA 1. The obtained flux is measured to be 6.71 $\pm$ 2.60
$\times$ $10^{-12}$ erg $\mathrm{cm}^{-2}$ $\mathrm{s}^{-1}$ with a spectral
index of 1.61 $\pm$ 0.36, which allows for a smooth connection with the flux in
the TeV band. CTA 1 is also considered to be associated with 1LHAASO
J0007+7303u, which is an Ultra-High-Energy source listed in the recently
published catalog of the Large High Altitude Air Shower Observatory. We assume
that the radiation originates from the pulsar wind nebula and that its
multi-wavelength spectral energy distribution can be explained well with a
time-dependent one-zone model.</description><identifier>DOI: 10.48550/arxiv.2403.06109</identifier><language>eng</language><subject>Physics - High Energy Astrophysical Phenomena</subject><creationdate>2024-03</creationdate><rights>http://arxiv.org/licenses/nonexclusive-distrib/1.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,777,882</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/2403.06109$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.2403.06109$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhou, Liancheng</creatorcontrib><creatorcontrib>Wu, Keyao</creatorcontrib><creatorcontrib>Gong, Yunlu</creatorcontrib><creatorcontrib>Fang, Jun</creatorcontrib><title>Possible GeV gamma-ray emission from the pulsar wind nebula in CTA 1</title><description>We report a detection of GeV $\gamma$-ray emission potentially originating
from the pulsar wind nebula in CTA 1 by analyzing about 15 yr of Fermi Large
Area Telescope data. By selecting an energy range from 50 GeV to 1 TeV to
remove contamination from the $\gamma$-ray pulsar PSR J0007+7303, we have
discovered an extended $\gamma$-ray source with a TS value of $\sim$ 44.94 in
the region of CTA 1. The obtained flux is measured to be 6.71 $\pm$ 2.60
$\times$ $10^{-12}$ erg $\mathrm{cm}^{-2}$ $\mathrm{s}^{-1}$ with a spectral
index of 1.61 $\pm$ 0.36, which allows for a smooth connection with the flux in
the TeV band. CTA 1 is also considered to be associated with 1LHAASO
J0007+7303u, which is an Ultra-High-Energy source listed in the recently
published catalog of the Large High Altitude Air Shower Observatory. We assume
that the radiation originates from the pulsar wind nebula and that its
multi-wavelength spectral energy distribution can be explained well with a
time-dependent one-zone model.</description><subject>Physics - High Energy Astrophysical Phenomena</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNotz81Kw0AUBeDZuJDqA7jyvkDiTeYvsyxRq1Coi-A23Mzc6EB-ysSqfXtrFQ4cOIsDnxA3Beaq0hrvKH3Hz7xUKHM0BbpLcf8yL0vsBoYNv8IbjSNliY7AYzzt8wR9mkf4eGfYH4aFEnzFKcDE3WEgiBPUzRqKK3HR07Dw9X-vRPP40NRP2Xa3ea7X24yMdZkuq2BYSWTGYJThsrDKI9mSsfDogvW-6jxb41CXUvfesJfhFGcdWS1X4vbv9sxo9ymOlI7tL6c9c-QPitdD5g</recordid><startdate>20240310</startdate><enddate>20240310</enddate><creator>Zhou, Liancheng</creator><creator>Wu, Keyao</creator><creator>Gong, Yunlu</creator><creator>Fang, Jun</creator><scope>GOX</scope></search><sort><creationdate>20240310</creationdate><title>Possible GeV gamma-ray emission from the pulsar wind nebula in CTA 1</title><author>Zhou, Liancheng ; Wu, Keyao ; Gong, Yunlu ; Fang, Jun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a679-528d6e430ee0d646e2174c0a72e01c09d7cc8bce76905235fc6ec3dc3d979a753</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Physics - High Energy Astrophysical Phenomena</topic><toplevel>online_resources</toplevel><creatorcontrib>Zhou, Liancheng</creatorcontrib><creatorcontrib>Wu, Keyao</creatorcontrib><creatorcontrib>Gong, Yunlu</creatorcontrib><creatorcontrib>Fang, Jun</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Zhou, Liancheng</au><au>Wu, Keyao</au><au>Gong, Yunlu</au><au>Fang, Jun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Possible GeV gamma-ray emission from the pulsar wind nebula in CTA 1</atitle><date>2024-03-10</date><risdate>2024</risdate><abstract>We report a detection of GeV $\gamma$-ray emission potentially originating
from the pulsar wind nebula in CTA 1 by analyzing about 15 yr of Fermi Large
Area Telescope data. By selecting an energy range from 50 GeV to 1 TeV to
remove contamination from the $\gamma$-ray pulsar PSR J0007+7303, we have
discovered an extended $\gamma$-ray source with a TS value of $\sim$ 44.94 in
the region of CTA 1. The obtained flux is measured to be 6.71 $\pm$ 2.60
$\times$ $10^{-12}$ erg $\mathrm{cm}^{-2}$ $\mathrm{s}^{-1}$ with a spectral
index of 1.61 $\pm$ 0.36, which allows for a smooth connection with the flux in
the TeV band. CTA 1 is also considered to be associated with 1LHAASO
J0007+7303u, which is an Ultra-High-Energy source listed in the recently
published catalog of the Large High Altitude Air Shower Observatory. We assume
that the radiation originates from the pulsar wind nebula and that its
multi-wavelength spectral energy distribution can be explained well with a
time-dependent one-zone model.</abstract><doi>10.48550/arxiv.2403.06109</doi><oa>free_for_read</oa></addata></record> |
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| identifier | DOI: 10.48550/arxiv.2403.06109 |
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| language | eng |
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| subjects | Physics - High Energy Astrophysical Phenomena |
| title | Possible GeV gamma-ray emission from the pulsar wind nebula in CTA 1 |
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