dc.contributor.author |
Mufakharov T. |
|
dc.contributor.author |
Mikhailov A. |
|
dc.contributor.author |
Sotnikova Y. |
|
dc.contributor.author |
Mingaliev M. |
|
dc.contributor.author |
Stolyarov V. |
|
dc.contributor.author |
Erkenov A. |
|
dc.contributor.author |
Nizhelskij N. |
|
dc.contributor.author |
Tsybulev P. |
|
dc.date.accessioned |
2022-02-09T20:31:55Z |
|
dc.date.available |
2022-02-09T20:31:55Z |
|
dc.date.issued |
2021 |
|
dc.identifier.issn |
0035-8711 |
|
dc.identifier.uri |
https://dspace.kpfu.ru/xmlui/handle/net/168799 |
|
dc.description.abstract |
We report the first detection at 4.7 and 8.2 GHz with the RATAN-600 radio telescope of the source PSO J047.4478+27.2992, which has been announced as a blazar at z = 6.1. The average flux densities are 12 ± 3 and 8 ± 4 mJy at 4.7 and 8.2 GHz respectively, and an upper limit is estimated as 3 mJy at 11.2 GHz. The light curve at 4.7 GHz, obtained on a time-scale of four months, exhibits moderate variability of the source (fractional variability Fvar = 0.28 ± 0.02). The new RATAN-600 measurements extend previous literature data to higher frequencies, indicating a single power-law radio spectrum with α0.147-8.2 = −0.51 ± 0.1. The monochromatic radio luminosity at 4.7 GHz Pν ∼ 2 × 1027 W Hz−1 is consistent with values for high-redshift quasars at z ≥ 3. |
|
dc.relation.ispartofseries |
Monthly Notices of the Royal Astronomical Society |
|
dc.subject |
Galaxies: high-redshift |
|
dc.subject |
Quasars: general |
|
dc.subject |
Quasars: individual: NVSS J030947+271757 |
|
dc.subject |
Radio continuum: galaxies |
|
dc.title |
Flux-density measurements of the high-redshift blazar PSO J047.4478+27.2992 at 4.7 and 8.2 GHz with RATAN-600 |
|
dc.type |
Article |
|
dc.relation.ispartofseries-issue |
3 |
|
dc.relation.ispartofseries-volume |
503 |
|
dc.collection |
Публикации сотрудников КФУ |
|
dc.relation.startpage |
4662 |
|
dc.source.id |
SCOPUS00358711-2021-503-3-SID85116321525 |
|