Jun Yang

Senior Research Engineer at Onsala Space Observatory

VLBI represents Very Long Baseline Interferometry. With the novel technique, astronomers can synthesize the cosmic radio wave observed simultaneously by multiple telescopes across great distances, and thus produce images for distant radio sources, e.g. the black hole shadow in M87, with a resolution up to ~10 micro-arcseconds.

Dr. Jun Yang is a senior research engineer at Onsala Space Observatory. He is in charge of the operation of astronomical VLBI observations with the 20-m and 25-m telescopes. He is also a rarely seen expert on the complex VLBI system (observations, troubleshooting, calibration, correlation, data reduction, etc.).

Dr. Jun Yang is also a senior radio astronomer. He has quite broad science interests. He has probed various astrophysical radio transients: Fast Radio Bursts (FRBs), Gamma-Ray Bursts (GRBs), X-Ray Binaries (XRBs), novae, and Tidal Disruption Events (TDEs). Moreover, he is quite interested in studying radio jets powered by massive and supermassive black holes in active galactic nuclei.

Source: chalmers.se
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Showing 69 publications

2024

A Centiparsec-scale Compact Radio Core in the Nearby Galaxy M60

X. F. Li, Jun Yang, X. P. Cheng et al
Astrophysical Journal. Vol. 960 (1)
Journal article
2024

A link between repeating and non-repeating fast radio bursts through their energy distributions

Franz Kirsten, O. S. Ould-Boukattine, W. Herrmann et al
Nature Astronomy. Vol. 8 (3), p. 337-346
Journal article
2024

The expansion of the GRB 221009A afterglow

S. Giarratana, O. S. Salafia, M. Giroletti et al
Astronomy and Astrophysics. Vol. 690
Journal article
2024

VLBI detection of the AE Aqr twin, LAMOST J024048.51+195226.9

Pengfei Jiang, Lang Cui, Xiang Liu et al
Monthly Notices of the Royal Astronomical Society: Letters. Vol. 528 (1), p. L112-L116
Journal article
2024

Milliarcsecond localization of the hyperactive repeating FRB 20220912A

Dante M. Hewitt, Shivani Bhandari, B. Marcote et al
Monthly Notices of the Royal Astronomical Society. Vol. 529 (2), p. 1814-1826
Journal article
2024

Unveiling the Small-scale Jets in the Rapidly Growing Supermassive Black Hole IZw1

Xiaolong Yang, Su Yao, Luigi C. Gallo et al
Astrophysical Journal. Vol. 966 (2)
Journal article
2023

VLBI Astrometry of radio stars to link radio and optical celestial reference frames. I. HD 199178 & AR Lacertae

Wen Chen, Bo Zhang, Jingdong Zhang et al
Monthly Notices of the Royal Astronomical Society. Vol. 524 (4), p. 5357-5367
Journal article
2023

Intermediate-mass black holes: finding of episodic, large-scale, and powerful jet activity in a dwarf galaxy

Jun Yang, Zsolt Paragi, Sandor Frey et al
Monthly Notices of the Royal Astronomical Society. Vol. 520 (4), p. 5964-5973
Journal article
2023

Mildly relativistic motion in the radio-quiet quasar PG 1351+640

Ailing Wang, T. An, Shaoguang Guo et al
Monthly Notices of the Royal Astronomical Society: Letters. Vol. 523 (1), p. L30-L34
Journal article
2023

Toward Microarcsecond Astrometry for the Innermost Wobbling Jet of the BL Lacertae Object OJ 287

Xiaopeng Cheng, Jun Yang, Guangyao-Yao Zhao et al
Astrophysical Journal Letters. Vol. 955 (2)
Journal article
2023

Filming the evolution of symbiotic novae with VLBI: The 2021 explosion of RS Oph

M. Giroletti, U. Munari, B. Marcote et al
Proceedings of Science. Vol. 428
Paper in proceeding
2023

VLBI observations of a sample of Palomar-Green quasars - I. Parsec-scale morphology

Ailing Wang, Tao An, Xiaopeng Cheng et al
Monthly Notices of the Royal Astronomical Society. Vol. 518 (1), p. 39-53
Journal article
2023

A Statistical Study of a Large Sample of Changing-look Active Galactic Nuclei with Multi-frequency Radio Sky Surveys

Wu Ye, Jun Yang, Sun Xiao-hui
Chinese Astronomy and Astrophysics. Vol. 47 (2), p. 285-308
Journal article
2023

The innermost jet in the hidden ultra-luminous X-ray source Cygnus X-3

Jun Yang, Federico García, Santiago Del Palacio et al
Monthly Notices of the Royal Astronomical Society: Letters. Vol. 526 (1), p. L1-L7
Journal article
2023

VLBI astrometry on the white dwarf pulsar AR Scorpii

Pengfei Jiang, Lang Cui, Jun Yang et al
Monthly Notices of the Royal Astronomical Society. Vol. 520 (2), p. 2942-2951
Journal article
2022

A long-lived compact jet in the black hole X-ray binary candidate AT2019wey

Hong Min Cao, Giulia Migliori, M. Giroletti et al
Astronomy and Astrophysics. Vol. 657
Journal article
2022

High-resolution VLBI Observations of and Modeling the Radio Emission from the Tidal Disruption Event AT2019dsg

Prashanth Mohan, Tao An, Yingkang Zhang et al
Astrophysical Journal. Vol. 927 (1)
Journal article
2022

A repeating fast radio burst source in a globular cluster

Franz Kirsten, B. Marcote, K. Nimmo et al
Nature. Vol. 602 (7898), p. 585-589
Journal article
2022

Radio Observations of Four Active Galactic Nuclei Hosting Intermediate-mass Black Hole Candidates: Studying the Outflow Activity and Evolution

Xiaolong Yang, P. Mohan, Jun Yang et al
Astrophysical Journal. Vol. 941 (1)
Journal article
2022

Multiwavelength View of the Close-by GRB 190829A Sheds Light on Gamma-Ray Burst Physics

Om Sharan Salafia, Maria Edvige Ravasio, Jun Yang et al
Astrophysical Journal Letters. Vol. 931 (2)
Journal article
2022

Is there a sub-parsec-scale jet base in the nearby dwarf galaxy NGC 4395?

Jun Yang, Xiaolong Yang, Joan M. Wrobel et al
Monthly Notices of the Royal Astronomical Society. Vol. 514 (4), p. 6215-6224
Journal article
2022

Burst timescales and luminosities as links between young pulsars and fast radio bursts

K. Nimmo, J. W. T. Hessels, Franz Kirsten et al
Nature Astronomy. Vol. 6 (3), p. 393-401
Journal article
2022

Structural and spectral properties of Galactic plane variable radio sources

Jun Yang, Yongjun Chen, Gurvits et al
Monthly Notices of the Royal Astronomical Society. Vol. 511 (1), p. 280-294
Journal article
2022

Milliarcsecond Localization of the Repeating FRB 20201124A

K. Nimmo, D. M. Hewitt, J. W. T. Hessels et al
Astrophysical Journal Letters. Vol. 927 (1)
Journal article
2022

The X-shaped Radio Galaxy J0725+5835 is Associated with an AGN Pair

Xiaolong Yang, Jialu Ji, Ravi Joshi et al
Astrophysical Journal. Vol. 933 (1)
Journal article
2022

Radio interferometric imaging of RS Oph bipolar ejecta for the 2021 nova outburst

U. Munari, M. Giroletti, B. Marcote et al
Astronomy and Astrophysics. Vol. 666
Journal article
2021

A parsec-scale faint jet in the nearby changing-look Seyfert galaxy Mrk 590

Jun Yang, I. van Bemmel, Z. Paragi et al
Monthly Notices of the Royal Astronomical Society: Letters. Vol. 502 (1), p. L61-L65
Journal article
2021

Detection of a parsec-scale jet in a radio-quiet narrow-line Seyfert 1 galaxy with highly accreting supermassive black hole

Su Yao, Xiaolong Yang, Minfeng Gu et al
Monthly Notices of the Royal Astronomical Society. Vol. 508 (1), p. 1305-1313
Journal article
2021

The jet collimation profile at high resolution in BL Lacertae

C. Casadio, N. R. Macdonald, B. Boccardi et al
Astronomy and Astrophysics. Vol. 649
Journal article
2021

Detection of two bright radio bursts from magnetar SGR 1935 + 2154

Franz Kirsten, M. P. Snelders, M. Jenkins et al
Nature Astronomy. Vol. 5 (4), p. 414-422
Journal article
2021

The nearby extreme accretion and feedback system PDS 456: finding a complex radio-emitting nucleus

Jun Yang, Zsolt Paragi, Emanuele Nardini et al
Monthly Notices of the Royal Astronomical Society. Vol. 500 (2), p. 2620-2626
Journal article
2021

A compact core-jet structure in the changing-look Seyfert NGC 2617

Jun Yang, Zsolt Paragi, Robert J. Beswick et al
Monthly Notices of the Royal Astronomical Society. Vol. 503 (3), p. 3886-3895
Journal article
2021

X-ray spectral evolution in an X-ray changing-look AGN NGC 1365 with variable column density

Hao Liu, Qing-Wen Wu, Yong-Quan Xue et al
Research in Astronomy and Astrophysics. Vol. 21 (8)
Journal article
2020

Evolving parsec-scale radio structure in the most distant blazar known

T. An, P. Mohan, Y. K. Zhang et al
Nature Communications. Vol. 11 (1)
Journal article
2020

Compact Bright Radio-loud AGNs. III. A Large VLBA Survey at 43 GHz

X-P Cheng, T. An, S. Frey et al
Astrophysical Journal, Supplement Series. Vol. 247 (2)
Journal article
2020

The Nearby Luminous Transient AT2018cow: A Magnetar Formed in a Subrelativistically Expanding Nonjetted Explosion

P. Mohan, T. An, Jun Yang
Astrophysical Journal Letters. Vol. 888 (2)
Journal article
2020

A parsec-scale radio jet launched by the central intermediate-mass black hole in the dwarf galaxy SDSS J090613.77+561015.2

Jun Yang, Leonid I. Gurvits, Zsolt Paragi et al
Monthly Notices of the Royal Astronomical Society: Letters. Vol. 495 (1), p. L71-L75
Journal article
2020

A two-sided but significantly beamed jet in the supercritical accretion quasar IRAS F11119+3257

Jun Yang, Zsolt Paragi, Tao An et al
Monthly Notices of the Royal Astronomical Society. Vol. 494 (2), p. 1744-1750
Journal article
2020

Radio Activity of Supermassive Black Holes with Extremely High Accretion Rates

Xiaolong Yang, Su Yao, Jun Yang et al
Astrophysical Journal. Vol. 904 (2)
Journal article
2020

The Hyperluminous, Dust-obscured Quasar W2246-0526 at z=4.6: Detection of Parsec-scale Radio Activity

Lulu Fan, Wen Chen, Tao An et al
Astrophysical Journal Letters. Vol. 905 (2)
Journal article
2019

Compact radio emission indicates a structured jet was produced by a binary neutron star merger

G. Ghirlanda, O. S. Salafia, Z. Paragi et al
Science. Vol. 363 (6430), p. 968-971
Journal article
2019

The jet of fsrq pks 1229-02 and its misidentification as a γ-ray agn

W. Zhao, X. Y. Hong, T. An et al
Research in Astronomy and Astrophysics. Vol. 19 (12)
Journal article
2019

The loud and the quiet: Searching for radio counterparts of two radio-weak BL Lac candidates with VLBI

Hong Min Cao, Sándor Frey, Krisztina E. Gabányi et al
Monthly Notices of the Royal Astronomical Society: Letters. Vol. 482 (1), p. L34-L39
Journal article
2019

Extended Catalog of Winged or X-shaped Radio Sources from the FIRST Survey

Xiaolong Yang, Ravi Joshi, Gopal-Krishna et al
Astrophysical Journal, Supplement Series. Vol. 245 (1)
Journal article
2019

A radio structure resolved at the deca-parsec scale in the radio-quiet quasar PDS 456 with an extremely powerful X-ray outflow

Jun Yang, Tao An, Fang Zheng et al
Monthly Notices of the Royal Astronomical Society. Vol. 482 (2), p. 1701-1705
Journal article
2018

The second-closest gamma-ray burst: Sub-luminous GRB 111005A with no supernova in a super-solar metallicity environment

M. J. Michalowski, Dong Xu, J. Stevens et al
Astronomy and Astrophysics. Vol. 616
Journal article
2018

RadioAstron gravitational redshift experiment: Status update

D. A. Litvinov, U. Bach, Norbert Bartel et al
14th Marcel Grossman Meeting On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, Proceedings, p. 3569-3575
Paper in proceeding
2018

Imaging and Variability Studies of CTA 102 during the 2016 January γ-ray Flare

X. F. Li, P. Mohan, T. An et al
Astrophysical Journal. Vol. 854 (1)
Journal article
2018

Revealing two radio-active galactic nuclei extremely near PSR J0437−4715

Zhixuan Li, Jun Yang, Tao An et al
Monthly Notices of the Royal Astronomical Society. Vol. 476 (1), p. 399-406
Journal article
2018

Probing the gravitational redshift with an Earth-orbiting satellite

Dmitry Litvinov, V. N. Rudenko, A. V. Alakoz et al
Physics Letters, Section A: General, Atomic and Solid State Physics. Vol. 382 (33), p. 2192-2198
Journal article
2018

The Most Compact Bright Radio-loud AGNs. II. VLBA Observations of 10 Sources at 43 and 86 GHz

X. P. Cheng, T. An, X. Y. Hong et al
Astrophysical Journal, Supplement Series. Vol. 234 (1)
Journal article
2018

Constraining the radio jet proper motion of the high-redshift quasar J2134− 0419 at z= 4.3

Krisztina Perger, Sandor Frey, Krisztina E. Gabanyi et al
Monthly Notices of the Royal Astronomical Society. Vol. 477 (1), p. 1065-1070
Journal article
2017

Single-dish and VLBI observations of Cygnus X-3 during the 2016 giant flare episode

E. Egron, A. Pellizzoni, M. Giroletti et al
Monthly Notices of the Royal Astronomical Society. Vol. 471 (3), p. 2703-2714
Journal article
2017

VLBI With GNSS-signals on an Intercontinental Baseline – A progress report

Rüdiger Haas, Thomas Hobiger, Grzegorz Klopotek et al
Proceedings of the 23rd European VLBI Group for Geodesy and Astrometry Working Meeting, p. 117-121
Other conference contribution
2017

Discovery of five low-luminosity active galactic nuclei at the centre of the Perseus cluster

Songyoun Park, Jun Yang, J.B. Raymond Oonk et al
Monthly Notices of the Royal Astronomical Society. Vol. 465 (4), p. 3943-3948
Journal article
2017

Multi-messenger Observations of a Binary Neutron Star Merger

B. P. Abbott, R. Abbott, T.D. Abbott et al
Astrophysical Journal Letters. Vol. 848 (2), p. L12-
Journal article
2017

NGC 5252: a pair of radio-emitting active galactic nuclei?

Xiaolong Yang, Jun Yang, Z. Paragi et al
Monthly Notices of the Royal Astronomical Society: Letters. Vol. 464 (1), p. L70-L74
Journal article
2017

VLBI observations of four radio quasars at z > 4: blazars or not?

H.M. Cao, S. Frey, K.E. Gabanyi et al
Monthly Notices of the Royal Astronomical Society. Vol. 467 (1), p. 950-960
Journal article
2017

VLBA 24 and 43 GHz observations of massive binary black hole candidate PKS 1155 + 251

Xiaolong Yang, Xiang Liu, Jun Yang et al
Monthly Notices of the Royal Astronomical Society. Vol. 471 (2), p. 1873-1878
Journal article
2016

FRB 150418: clues to its nature from European VLBI Network and e-MERLIN observations

M. Ciroletti, B. Marcote, M.A. Garrett et al
Astronomy and Astrophysics. Vol. 593, p. L16-L19
Journal article
2016

No apparent superluminal motion in the first-known jetted tidal disruption event Swift J1644+5734

Jun Yang, Z. Paragi, A. J. van der Horst et al
Monthly Notices of the Royal Astronomical Society. Vol. 462 (1), p. L66-L70
Journal article
2016

Swift J1644+5734: the EVN view

Z. Paragi, Jun Yang, S. Komossa et al
Proceedings of the International Astronomical Union. Vol. 12 (S324), p. 119-122
Journal article
2015

The SFXC software correlator for very long baseline interferometry: algorithms and implementation

A. Keimpema, M. M. Kettenis, Sergei Pogrebenko et al
Experimental Astronomy. Vol. 39 (2), p. 259-279
Journal article
2015

VLBI detection of the internal shocks in nova V959 Mon

Jun Yang, Z. Paragi, Tim O'Brien et al
Proceedings of Science
Paper in proceeding
2014

Binary orbits as the driver of gamma-ray emission and mass ejection in classical novae

L. Chomiuk, Justin D. Linford, Jun Yang et al
Nature. Vol. 514 (7522), p. 339-+
Journal article
2014

The Wettzell-Onsala G130128 experiment – VLBI-observations of a GLONASS satellite

Rüdiger Haas, Alexander Neidhardt, Jan Kodet et al
IVS 2014 General Meeting Proceedings "VGOS: The New VLBI Network", Edited by Dirk Behrend, Karen D. Baver, and Kyla L. Armstrong, Science Press (Beijing), p. 451-455
Other conference contribution
2014

A comprehensive radio view of the extremely bright gamma-ray burst 130427A

A. J. van der Horst, Z. Paragi, A. G. de Bruyn et al
Monthly Notices of the Royal Astronomical Society. Vol. 444 (4), p. 3151-3163
Journal article

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