Discovery of extreme Quasi-Periodic Eruptions in a newly accreting massive black hole
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arXiv
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| Format: | Preprint |
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2025
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| author | Hernández-García, Lorena Chakraborty, Joheen Sánchez-Sáez, Paula Ricci, Claudio Cuadra, Jorge McKernan, Barry Ford, K. E. Saavik Arévalo, Patricia Rau, Arne Arcodia, Riccardo Kara, Erin Liu, Zhu Merloni, Andrea Bruni, Gabriele Goodwin, Adelle Arzoumanian, Zaven Assef, Roberto J. Baldini, Pietro Bayo, Amelia Bauer, Franz E. Bernal, Santiago Brightman, Murray Rivera, Gabriela Calistro Gendreau, Keith Homan, David Krumpe, Mirko Lira, Paulina Martínez-Aldama, Mary Loli Salvato, Mara Sotomayor, Belén |
| author_facet | Hernández-García, Lorena Chakraborty, Joheen Sánchez-Sáez, Paula Ricci, Claudio Cuadra, Jorge McKernan, Barry Ford, K. E. Saavik Arévalo, Patricia Rau, Arne Arcodia, Riccardo Kara, Erin Liu, Zhu Merloni, Andrea Bruni, Gabriele Goodwin, Adelle Arzoumanian, Zaven Assef, Roberto J. Baldini, Pietro Bayo, Amelia Bauer, Franz E. Bernal, Santiago Brightman, Murray Rivera, Gabriela Calistro Gendreau, Keith Homan, David Krumpe, Mirko Lira, Paulina Martínez-Aldama, Mary Loli Salvato, Mara Sotomayor, Belén |
| contents | Quasi-periodic eruptions (QPEs) are rapid, recurring X-ray bursts from supermassive black holes, believed to result from interactions between accretion disks and surrounding matter. The galaxy SDSS1335+0728, previously stable for two decades, exhibited an increase in optical brightness in December 2019, followed by persistent Active Galactic Nucleus (AGN)-like variability for 5 years, suggesting the activation of a $\sim$10$^6\;M_\odot$ black hole. From February 2024, X-ray emission has been detected, revealing extreme $\sim$4.5-day QPEs with the highest fluxes and amplitudes, longest time scales, largest integrated energies, and a $\sim$25-day super-period. Low-significance UV variations are reported for the first time in a QPE host, likely related to the long timescales and large radii from which the emission originates. This discovery broadens the possible formation channels for QPEs, suggesting they are not linked solely to tidal disruption events but more generally to newly formed accretion flows, which we are witnessing in real time in a turn-on AGN candidate. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_07169 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Discovery of extreme Quasi-Periodic Eruptions in a newly accreting massive black hole Hernández-García, Lorena Chakraborty, Joheen Sánchez-Sáez, Paula Ricci, Claudio Cuadra, Jorge McKernan, Barry Ford, K. E. Saavik Arévalo, Patricia Rau, Arne Arcodia, Riccardo Kara, Erin Liu, Zhu Merloni, Andrea Bruni, Gabriele Goodwin, Adelle Arzoumanian, Zaven Assef, Roberto J. Baldini, Pietro Bayo, Amelia Bauer, Franz E. Bernal, Santiago Brightman, Murray Rivera, Gabriela Calistro Gendreau, Keith Homan, David Krumpe, Mirko Lira, Paulina Martínez-Aldama, Mary Loli Salvato, Mara Sotomayor, Belén High Energy Astrophysical Phenomena Astrophysics of Galaxies Quasi-periodic eruptions (QPEs) are rapid, recurring X-ray bursts from supermassive black holes, believed to result from interactions between accretion disks and surrounding matter. The galaxy SDSS1335+0728, previously stable for two decades, exhibited an increase in optical brightness in December 2019, followed by persistent Active Galactic Nucleus (AGN)-like variability for 5 years, suggesting the activation of a $\sim$10$^6\;M_\odot$ black hole. From February 2024, X-ray emission has been detected, revealing extreme $\sim$4.5-day QPEs with the highest fluxes and amplitudes, longest time scales, largest integrated energies, and a $\sim$25-day super-period. Low-significance UV variations are reported for the first time in a QPE host, likely related to the long timescales and large radii from which the emission originates. This discovery broadens the possible formation channels for QPEs, suggesting they are not linked solely to tidal disruption events but more generally to newly formed accretion flows, which we are witnessing in real time in a turn-on AGN candidate. |
| title | Discovery of extreme Quasi-Periodic Eruptions in a newly accreting massive black hole |
| topic | High Energy Astrophysical Phenomena Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2504.07169 |