J2102+6015: An intriguing radio-loud active galactic nucleus in the early universe

Sándor Frey; Tao An; Krisztina Gabányi; Leonid Gurvits; Máté Krezinger; Alexey Melnikov; Prashanth Mohan; Zsolt Paragi; Krisztina Perger; null More Authors

doi:10.22323/1.428.0022

J2102+6015: An intriguing radio-loud active galactic nucleus in the early universe

Sándor Frey, Tao An, Krisztina Gabányi, Leonid Gurvits, Máté Krezinger, Alexey Melnikov, Prashanth Mohan, Zsolt Paragi, Krisztina Perger, More Authors

Astrodynamics & Space Missions

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Abstract

The powerful high-redshift quasar J2102+6015 (at z = 4.575) may provide useful information for studying supermassive black hole growth, galaxy evolution and feedback in the early Universe. The source has so far been imaged with very-long-baseline interferometry (VLBI) at 2/8 GHz (S/X) bands only, showing complex compact structure. Its total radio spectrum peaks at ∼ 6 GHz in the rest frame. There is no sign of Doppler-boosted jet emission, and the separation of the two major features in its east-west oriented structure spanning ∼ 10 milliarcseconds does not change significantly on a timescale longer than a decade. However, VLBI astrometric monitoring observations suggest quasi-periodic (∼ 3 yr) variation in its absolute position. J2102+6015 is presumably a young radio source with jets misaligned with respect to the line of sight. Here we briefly report on our new high-resolution imaging observations made with the European VLBI Network (EVN) at 5 and 22 GHz frequencies in 2021 June, and give an overview of what is currently known about this peculiar, distant jetted active galactic nucleus.

Original language	English
Article number	022
Number of pages	8
Journal	Proceedings of Science
Volume	428
DOIs	https://doi.org/10.22323/1.428.0022
Publication status	Published - 2023
Event	15th European VLBI Network Mini-Symposium and Users' Meeting, EVN 2022 - Cork, Ireland Duration: 11 Jul 2022 → 15 Jul 2022

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10.22323/1.428.0022

EVN2022_022Final published version, 330 KBLicence: CC BY-NC-ND

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title = "J2102+6015: An intriguing radio-loud active galactic nucleus in the early universe",

abstract = "The powerful high-redshift quasar J2102+6015 (at z = 4.575) may provide useful information for studying supermassive black hole growth, galaxy evolution and feedback in the early Universe. The source has so far been imaged with very-long-baseline interferometry (VLBI) at 2/8 GHz (S/X) bands only, showing complex compact structure. Its total radio spectrum peaks at ∼ 6 GHz in the rest frame. There is no sign of Doppler-boosted jet emission, and the separation of the two major features in its east-west oriented structure spanning ∼ 10 milliarcseconds does not change significantly on a timescale longer than a decade. However, VLBI astrometric monitoring observations suggest quasi-periodic (∼ 3 yr) variation in its absolute position. J2102+6015 is presumably a young radio source with jets misaligned with respect to the line of sight. Here we briefly report on our new high-resolution imaging observations made with the European VLBI Network (EVN) at 5 and 22 GHz frequencies in 2021 June, and give an overview of what is currently known about this peculiar, distant jetted active galactic nucleus.",

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doi = "10.22323/1.428.0022",

language = "English",

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journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Scuola Internazionale Superiore di Studi Avanzati (SISSA)",

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T2 - 15th European VLBI Network Mini-Symposium and Users' Meeting, EVN 2022

AU - Frey, Sándor

AU - An, Tao

AU - Gabányi, Krisztina

AU - Gurvits, Leonid

AU - Krezinger, Máté

AU - Melnikov, Alexey

AU - Mohan, Prashanth

AU - Paragi, Zsolt

AU - Perger, Krisztina

AU - More Authors, null

PY - 2023

Y1 - 2023

N2 - The powerful high-redshift quasar J2102+6015 (at z = 4.575) may provide useful information for studying supermassive black hole growth, galaxy evolution and feedback in the early Universe. The source has so far been imaged with very-long-baseline interferometry (VLBI) at 2/8 GHz (S/X) bands only, showing complex compact structure. Its total radio spectrum peaks at ∼ 6 GHz in the rest frame. There is no sign of Doppler-boosted jet emission, and the separation of the two major features in its east-west oriented structure spanning ∼ 10 milliarcseconds does not change significantly on a timescale longer than a decade. However, VLBI astrometric monitoring observations suggest quasi-periodic (∼ 3 yr) variation in its absolute position. J2102+6015 is presumably a young radio source with jets misaligned with respect to the line of sight. Here we briefly report on our new high-resolution imaging observations made with the European VLBI Network (EVN) at 5 and 22 GHz frequencies in 2021 June, and give an overview of what is currently known about this peculiar, distant jetted active galactic nucleus.

AB - The powerful high-redshift quasar J2102+6015 (at z = 4.575) may provide useful information for studying supermassive black hole growth, galaxy evolution and feedback in the early Universe. The source has so far been imaged with very-long-baseline interferometry (VLBI) at 2/8 GHz (S/X) bands only, showing complex compact structure. Its total radio spectrum peaks at ∼ 6 GHz in the rest frame. There is no sign of Doppler-boosted jet emission, and the separation of the two major features in its east-west oriented structure spanning ∼ 10 milliarcseconds does not change significantly on a timescale longer than a decade. However, VLBI astrometric monitoring observations suggest quasi-periodic (∼ 3 yr) variation in its absolute position. J2102+6015 is presumably a young radio source with jets misaligned with respect to the line of sight. Here we briefly report on our new high-resolution imaging observations made with the European VLBI Network (EVN) at 5 and 22 GHz frequencies in 2021 June, and give an overview of what is currently known about this peculiar, distant jetted active galactic nucleus.

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VL - 428

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 022

Y2 - 11 July 2022 through 15 July 2022

ER -

J2102+6015: An intriguing radio-loud active galactic nucleus in the early universe

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