activity
20102026
most citedDiscovery of a dormant 33 solar-mass black hole in pre-release Gaia astrometry

129 citations · 414 across the 15 of their papers we have counts for

collaborators

15 papers

astro-ph.SR2026

Gaia21bja: pre-main sequence star with quasi-periodic bursts

Ádám Mátéfy, Zsófia Nagy, Ágnes Kóspál +12

Gaia21bja is a Gaia alerted young stellar object (YSO) that exhibits at least seven quasi-peridoic brightenings over a 20 year-long light curve with durations of 1.5-2 years and am…

astro-ph.SR2026

Gaia20dsk: A new MNor discovered by the GLORIOUS collaboration

Patrik E. Németh, Fernando Cruz-Sáenz de Miera, Ágnes Kóspál +10

Context. Among known young stellar objects (YSOs), those exhibiting the most dramatic increases in brightness due to sudden increase in mass accretion rate are eruptive young stars…

astro-ph.SR2025★ 4 cited

Short- and long-term variations of the high mass accretion rate classical T Tauri star DR Tau

Gabriella Zsidi, Ágnes Kóspál, Péter Ábrahám +20

Classical T Tauri stars are newly formed, low mass stars which may display both periodic and random variations in their brightness. The interaction between the star and its circums…

astro-ph.SR2025

The 2023 outburst of the Gaia alerted EXor Gaia23bab

Zsófia Nagy, Ágnes Kóspál, Péter Ábrahám +33

Episodic accretion is a fundamental process in the build-up of the stellar mass. EX Lupi-type eruptive young stars (EXors) represent one of the main types of episodic accretion. We…

astro-ph.SR2024★ 3 cited

Gaia20bdk -- a new FUor in Sh 2-301 Star Forming Region

M. Siwak, Á. Kóspál, P. Ábrahám +28

Context. We analyse multi-colour photometric and spectroscopic observations of a Young Stellar Object Gaia20bdk. Aims. We aim to investigate the exact nature of the eruptive phenom…

astro-ph.GA2024★ 129 cited

Discovery of a dormant 33 solar-mass black hole in pre-release Gaia astrometry

Gaia Collaboration, P. Panuzzo, T. Mazeh +412

Gravitational waves from black-hole merging events have revealed a population of extra-galactic BHs residing in short-period binaries with masses that are higher than expected base…

astro-ph.SR2024★ 5 cited

The Enigma of Gaia18cjb: a Rare Hybrid of FUor and EXor?

Eleonora Fiorellino, Peter Abraham, Agnes Kospal +28

Context. Gaia18cjb is one of the Gaia-alerted eruptive young star candidates which has been experiencing a slow and strong brightening during the last 13 years, similar to some FU…

astro-ph.SR2023★ 16 cited

Gaia Focused Product Release: Sources from Service Interface Function image analysis -- Half a million new sources in omega Centauri

Gaia Collaboration, K. Weingrill, A. Mints +400

Gaia's readout window strategy is challenged by very dense fields in the sky. Therefore, in addition to standard Gaia observations, full Sky Mapper (SM) images were recorded for ni…

astro-ph.EP2023★ 23 cited

Gaia Focused Product Release: Asteroid orbital solution. Properties and assessment

Gaia Collaboration, P. David, F. Mignard +2

Context. We report the exploitation of a sample of epoch astrometry for 157 000 asteroids, the same object in the Gaia Data Release 3, extended over the time coverage planned for t…

astro-ph.GA2023★ 7 cited

Gaia Focused Product Release: A catalogue of sources around quasars to search for strongly lensed quasars

Gaia Collaboration, A. Krone-Martins, C. Ducourant +398

Context. Strongly lensed quasars are fundamental sources for cosmology. The Gaia space mission covers the entire sky with the unprecedented resolution of " in the optical, ma…

astro-ph.SR2023

Gaia Focused Product Release: Radial velocity time series of long-period variables

Gaia Collaboration, M. Trabucchi, N. Mowlavi +403

The third Gaia Data Release (DR3) provided photometric time series of more than 2 million long-period variable (LPV) candidates. Anticipating the publication of full radial-velocit…

astro-ph.IM2022★ 56 cited

Gaia Data Release 3: Cross-match of Gaia sources with variable objects from the literature

P. Gavras, L. Rimoldini, K. Nienartowicz +22

Context. In the current ever increasing data volumes of astronomical surveys, automated methods are essential. Objects of known classes from the literature are necessary for traini…

astro-ph.SR2022★ 42 cited

Gaia Data Release 3 Validating the classification of variable Young Stellar Object candidates

Gábor Marton, Péter Ábrahám, Lorenzo Rimoldini +14

Context. The Gaia third Data Release (DR3) presents the first catalogue of full-sky variable Young Stellar Object (YSO) candidates observed by the Gaia space telescope during the i…

astro-ph.SR2013★ 33 cited

Exploring the circumstellar environment of the young eruptive star V2492 Cyg

Á. Kóspál, P. Ábrahám, J. A. Acosta-Pulido +20

Context. V2492 Cyg is a young eruptive star that went into outburst in 2010. The near-infrared color changes observed since the outburst peak suggest that the source belongs to a n…

astro-ph.SR2010★ 96 cited

The outburst and nature of two young eruptive stars in the North America/Pelican Nebula Complex

Á. Kóspál, P. Ábrahám, J. A. Acosta-Pulido +8

Context. In August 2010, the sudden optical brightening of two young stellar objects, located in the North America/Pelican Nebula Complex, was announced. Early observations indicat…