4FGL J2054.2+6904: A Binary “Redback” Pulsar
The γ-ray source 4FGL J2054.2+6904 discovered with Fermi was recently classified as a pulsar candidate. Its possible X-ray and optical counterpart was identified with Swift. Using Zwicky survey data we show that the counterpart is variable in the optical with the period of about 7.5 h. The shape of...
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| Veröffentlicht in: | Technical physics 2024-05, Vol.69 (5), p.1479-1481 |
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| creator | Zyuzin, D. A. Karpova, A. V. Shibanov, Yu. A. Gilfanov, M. R. |
| description | The γ-ray source 4FGL J2054.2+6904 discovered with Fermi was recently classified as a pulsar candidate. Its possible X-ray and optical counterpart was identified with Swift. Using Zwicky survey data we show that the counterpart is variable in the optical with the period of about 7.5 h. The shape of the light curve is almost sinusoidal with the amplitude of ≈0.5
m
. The spectral energy distribution corresponds to the stellar spectrum with the effective temperature of 5820 ± 410 K. We also firmly detected the source in X-rays using the
SRG
/
eROSITA
all sky survey data. Its X-ray spectrum can be described by a power law with the photon index of about 1.0 and unabsorbed flux ≈2 × 10
–13
erg/(s cm
2
) in the 0.5–10 keV range. These results show that 4FGL J2054.2+6904 is a promising candidate to a millisecond pulsar in a close binary system of the “redback” type. |
| doi_str_mv | 10.1134/S1063784224040510 |
| format | Article |
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m
. The spectral energy distribution corresponds to the stellar spectrum with the effective temperature of 5820 ± 410 K. We also firmly detected the source in X-rays using the
SRG
/
eROSITA
all sky survey data. Its X-ray spectrum can be described by a power law with the photon index of about 1.0 and unabsorbed flux ≈2 × 10
–13
erg/(s cm
2
) in the 0.5–10 keV range. These results show that 4FGL J2054.2+6904 is a promising candidate to a millisecond pulsar in a close binary system of the “redback” type.</description><identifier>ISSN: 1063-7842</identifier><identifier>EISSN: 1090-6525</identifier><identifier>DOI: 10.1134/S1063784224040510</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Binary stars ; Classical and Continuum Physics ; Gamma ray sources ; Light curve ; Millisecond pulsars ; Optical counterparts (astronomy) ; Physics ; Physics and Astronomy ; Sky surveys (astronomy) ; Spectral energy distribution ; X ray spectra ; X-ray astronomy ; X-rays</subject><ispartof>Technical physics, 2024-05, Vol.69 (5), p.1479-1481</ispartof><rights>Pleiades Publishing, Ltd. 2024. ISSN 1063-7842, Technical Physics, 2024, Vol. 69, No. 5, pp. 1479–1481. © Pleiades Publishing, Ltd., 2024. Russian Text © The Author(s), 2023, published in Zhurnal Tekhnicheskoi Fiziki, 2023, Vol. 93, No. 12, pp. 1765–1767. English Text © Ioffe Institute, 2023.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c198t-32804eefd8be10f6f640d8863060171708857bfc845c94cd4ae1e4ba9ad662a43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S1063784224040510$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S1063784224040510$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Zyuzin, D. A.</creatorcontrib><creatorcontrib>Karpova, A. V.</creatorcontrib><creatorcontrib>Shibanov, Yu. A.</creatorcontrib><creatorcontrib>Gilfanov, M. R.</creatorcontrib><title>4FGL J2054.2+6904: A Binary “Redback” Pulsar</title><title>Technical physics</title><addtitle>Tech. Phys</addtitle><description>The γ-ray source 4FGL J2054.2+6904 discovered with Fermi was recently classified as a pulsar candidate. Its possible X-ray and optical counterpart was identified with Swift. Using Zwicky survey data we show that the counterpart is variable in the optical with the period of about 7.5 h. The shape of the light curve is almost sinusoidal with the amplitude of ≈0.5
m
. The spectral energy distribution corresponds to the stellar spectrum with the effective temperature of 5820 ± 410 K. We also firmly detected the source in X-rays using the
SRG
/
eROSITA
all sky survey data. Its X-ray spectrum can be described by a power law with the photon index of about 1.0 and unabsorbed flux ≈2 × 10
–13
erg/(s cm
2
) in the 0.5–10 keV range. These results show that 4FGL J2054.2+6904 is a promising candidate to a millisecond pulsar in a close binary system of the “redback” type.</description><subject>Binary stars</subject><subject>Classical and Continuum Physics</subject><subject>Gamma ray sources</subject><subject>Light curve</subject><subject>Millisecond pulsars</subject><subject>Optical counterparts (astronomy)</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Sky surveys (astronomy)</subject><subject>Spectral energy distribution</subject><subject>X ray spectra</subject><subject>X-ray astronomy</subject><subject>X-rays</subject><issn>1063-7842</issn><issn>1090-6525</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp1kE1KA0EQhRtRMEYP4G7ApUys6q6u7nEXQxKVgOLPeuiZ6ZHEmMTuZOEuB9HL5SROiOBCXFVBfe_V4wlxitBBVHTxiMDKWJKSgEAj7IkWQgYpa6n3tzurdHs_FEcxTgAQreaWABoMR8mtBE0dec4Z0GXSTa7GMxc-ks3688FXhStfN-uv5H41jS4ci4PaTaM_-Zlt8TzoP_Wu09Hd8KbXHaUlZnaZKmmBvK8rW3iEmmsmqKxlBQxo0IC12hR1aUmXGZUVOY-eCpe5ilk6Um1xtvNdhPn7ysdlPpmvwqx5mSsEQ2zYQEPhjirDPMbg63wRxm9N9hwh3xaT_ymm0cidJjbs7MWHX-f_Rd_-lWDM</recordid><startdate>20240501</startdate><enddate>20240501</enddate><creator>Zyuzin, D. A.</creator><creator>Karpova, A. V.</creator><creator>Shibanov, Yu. A.</creator><creator>Gilfanov, M. R.</creator><general>Pleiades Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20240501</creationdate><title>4FGL J2054.2+6904: A Binary “Redback” Pulsar</title><author>Zyuzin, D. A. ; Karpova, A. V. ; Shibanov, Yu. A. ; Gilfanov, M. R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c198t-32804eefd8be10f6f640d8863060171708857bfc845c94cd4ae1e4ba9ad662a43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Binary stars</topic><topic>Classical and Continuum Physics</topic><topic>Gamma ray sources</topic><topic>Light curve</topic><topic>Millisecond pulsars</topic><topic>Optical counterparts (astronomy)</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Sky surveys (astronomy)</topic><topic>Spectral energy distribution</topic><topic>X ray spectra</topic><topic>X-ray astronomy</topic><topic>X-rays</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zyuzin, D. A.</creatorcontrib><creatorcontrib>Karpova, A. V.</creatorcontrib><creatorcontrib>Shibanov, Yu. A.</creatorcontrib><creatorcontrib>Gilfanov, M. R.</creatorcontrib><collection>CrossRef</collection><jtitle>Technical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zyuzin, D. A.</au><au>Karpova, A. V.</au><au>Shibanov, Yu. A.</au><au>Gilfanov, M. R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>4FGL J2054.2+6904: A Binary “Redback” Pulsar</atitle><jtitle>Technical physics</jtitle><stitle>Tech. Phys</stitle><date>2024-05-01</date><risdate>2024</risdate><volume>69</volume><issue>5</issue><spage>1479</spage><epage>1481</epage><pages>1479-1481</pages><issn>1063-7842</issn><eissn>1090-6525</eissn><abstract>The γ-ray source 4FGL J2054.2+6904 discovered with Fermi was recently classified as a pulsar candidate. Its possible X-ray and optical counterpart was identified with Swift. Using Zwicky survey data we show that the counterpart is variable in the optical with the period of about 7.5 h. The shape of the light curve is almost sinusoidal with the amplitude of ≈0.5
m
. The spectral energy distribution corresponds to the stellar spectrum with the effective temperature of 5820 ± 410 K. We also firmly detected the source in X-rays using the
SRG
/
eROSITA
all sky survey data. Its X-ray spectrum can be described by a power law with the photon index of about 1.0 and unabsorbed flux ≈2 × 10
–13
erg/(s cm
2
) in the 0.5–10 keV range. These results show that 4FGL J2054.2+6904 is a promising candidate to a millisecond pulsar in a close binary system of the “redback” type.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S1063784224040510</doi><tpages>3</tpages></addata></record> |
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| source | SpringerNature Journals |
| subjects | Binary stars Classical and Continuum Physics Gamma ray sources Light curve Millisecond pulsars Optical counterparts (astronomy) Physics Physics and Astronomy Sky surveys (astronomy) Spectral energy distribution X ray spectra X-ray astronomy X-rays |
| title | 4FGL J2054.2+6904: A Binary “Redback” Pulsar |
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