Anomaly Detection and Approximate Similarity Searches of Transients in Real-time Data Streams

Autor: P. D. Aleo, A. W. Engel, G. Narayan, C. R. Angus, K. Malanchev, K. Auchettl, V. F. Baldassare, A. Berres, T. J. L. de Boer, B. M. Boyd, K. C. Chambers, K. W. Davis, N. Esquivel, D. Farias, R. J. Foley, A. Gagliano, C. Gall, H. Gao, S. Gomez, M. Grayling, D. O. Jones, C.-C. Lin, E. A. Magnier, K. S. Mandel, T. Matheson, S. I. Raimundo, V. G. Shah, M. D. Soraisam, K. M. de Soto, S. Vicencio, V. A. Villar, R. J. Wainscoat

Publikováno v: The Astrophysical Journal, Vol 974, Iss 2, p 172 (2024)

We present Lightcurve Anomaly Identification and Similarity Search ( LAISS ), an automated pipeline to detect anomalous astrophysical transients in real-time data streams. We deploy our anomaly detection model on the nightly Zwicky Transient Facility

Externí odkaz: https://doaj.org/article/94a0ad0287c342a882f3191898101f2f

The Circumstellar Environments of Double-peaked, Calcium-strong Transients 2021gno and 2021inl

Autor: W. V. Jacobson-Galán, P. Venkatraman, R. Margutti, D. Khatami, G. Terreran, R. J. Foley, R. Angulo, C. R. Angus, K. Auchettl, P. K. Blanchard, A. Bobrick, J. S. Bright, D. Brout, K. C. Chambers, C. D. Couch, D. A. Coulter, K. Clever, K. W. Davis, T. J. L. de Boer, L. DeMarchi, S. A. Dodd, D. O. Jones, J. Johnson, C. D. Kilpatrick, N. Khetan, Z. Lai, D. Langeroodi, C.-C. Lin, E. A. Magnier, D. Milisavljevic, H. B. Perets, J. D. R. Pierel, J. Raymond, S. Rest, A. Rest, R. Ridden-Harper, K. J. Shen, M. R. Siebert, C. Smith, K. Taggart, S. Tinyanont, F. Valdes, V. A. Villar, Q. Wang, S. K. Yadavalli, Y. Zenati, A. Zenteno

Publikováno v: Jacobson-Galan, W V, Venkatraman, P, Margutti, R, Khatami, D, Terreran, G, Foley, R J, Angulo, R, Angus, C R, Auchettl, K, Blanchard, P K, Bobrick, A, Bright, J S, Brout, D, Chambers, K C, Couch, C D, Coulter, D A, Clever, K, Davis, K W, de Boer, T J L, DeMarchi, L, Dodd, S A, Jones, D O, Johnson, J, Kilpatrick, C D, Khetan, N, Lai, Z, Langeroodi, D, Lin, C-C, Magnier, E A, Milisavljevic, D, Perets, H B, Pierel, J D R, Raymond, J, Rest, S, Rest, A, Ridden-Harper, R, Shen, K J, Siebert, M R, Smith, C, Taggart, K, Tinyanont, S, Valdes, F, Villar, V A, Wang, Q, Yadavalli, S K, Zenati, Y & Zenteno, A 2022, ' The Circumstellar Environments of Double-peaked, Calcium-strong Transients 2021gno and 2021inl ', Astrophysical Journal, vol. 932, no. 1, 58 . https://doi.org/10.3847/1538-4357/ac67dc

We present panchromatic observations and modeling of calcium-strong supernovae (SNe) 2021gno in the star-forming host-galaxy NGC 4165 and 2021inl in the outskirts of elliptical galaxy NGC 4923, both monitored through the Young Supernova Experiment tr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba22b71685953059d46ebd8b20f5d94b
https://curis.ku.dk/ws/files/315472935/Jacobson_Gal_n_2022_ApJ_932_58.pdf

The nuclear transient AT 2017gge: a tidal disruption event in a dusty and gas-rich environment and the awakening of a dormant SMBH

Autor: F Onori, G Cannizzaro, P G Jonker, M Kim, M Nicholl, S Mattila, T M Reynolds, M Fraser, T Wevers, E Brocato, J P Anderson, R Carini, P Charalampopoulos, P Clark, M Gromadzki, C P Gutiérrez, N Ihanec, C Inserra, A Lawrence, G Leloudas, P Lundqvist, T E Müller-Bravo, S Piranomonte, M Pursiainen, K A Rybicki, A Somero, D R Young, K C Chambers, H Gao, T J L de Boer, E A Magnier

Publikováno v: Onori, F, Cannizzaro, G, Jonker, P G, Kim, M, Nicholl, M, Mattila, S, Reynolds, T M, Fraser, M, Wevers, T, Brocato, E, Anderson, J P, Carini, R, Charalampopoulos, P, Clark, P, Gromadzki, M, Gutierrez, C P, Ihanec, N, Inserra, C, Lawrence, A, Leloudas, G, Lundqvist, P, Muller-Bravo, T E, Piranomonte, S, Pursiainen, M, Rybicki, K A, Somero, A, Young, D R, Chambers, K C, Gao, H, de Boer, T J L & Magnier, E A 2022, ' The nuclear transient AT 2017gge : a tidal disruption event in a dusty and gas-rich environment and the awakening of a dormant SMBH ', Monthly Notices of the Royal Astronomical Society, vol. 517, no. 1, pp. 76-98 . https://doi.org/10.1093/mnras/stac2673
Monthly Notices of the Royal Astronomical Society, 517, 76-98
Monthly Notices of the Royal Astronomical Society, 517, 1, pp. 76-98

We present the results from a dense multi-wavelength (optical/UV, near-infrared (IR), and X-ray) follow-up campaign of the nuclear transient AT2017gge, covering a total of 1698 days from the transient's discovery. The bolometric lightcurve, the black

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc62d14686e9504aab64d54606a0b7b2
http://arxiv.org/abs/2206.00049

SN 2020kyg and the rates of faint Iax supernovae from ATLAS

Autor: Shubham Srivastav, S J Smartt, M E Huber, K C Chambers, C R Angus, T-W Chen, F P Callan, J H Gillanders, O R McBrien, S A Sim, M Fulton, J Hjorth, K W Smith, D R Young, K Auchettl, J P Anderson, G Pignata, T J L de Boer, C-C Lin, E A Magnier

Publikováno v: Srivastav, S, Smartt, S J, Huber, M E, Chambers, K C, Angus, C R, Chen, T-W, Callan, F P, Gillanders, J H, McBrien, O R, Sim, S A, Fulton, M, Hjorth, J, Smith, K W, Young, D R, Auchettl, K, Anderson, J P, Pignata, G, de Boer, T J L, Lin, C-C & Magnier, E A 2022, ' SN 2020kyg and the rates of faint Iax supernovae from ATLAS ', Monthly Notices of the Royal Astronomical Society, vol. 511, no. 2, pp. 2708-2731 . https://doi.org/10.1093/mnras/stac177
Srivastav, S, Smartt, S J, Huber, M E, Chambers, K C, Angus, C R, Chen, T-W, Callan, F P, Gillanders, J H, McBrien, O R, Sim, S A, Fulton, M, Hjorth, J, Smith, K W, Young, D R, Auchettl, K, Anderson, J P, Pignata, G, de Boer, T J L, Lin, C-C & Magnier, E A 2022, ' SN 2020kyg and the rates of faint Iax supernovae from ATLAS ', Monthly Notices of the Royal Astronomical Society, vol. 511, no. 2, pp. 2708–2731 . https://doi.org/10.1093/mnras/stac177

We present multi-wavelength follow-up observations of the ATLAS discovered faint Iax supernova SN 2020kyg that peaked at an absolute magnitude of $M_g \approx -14.9 \pm 0.2$, making it another member of the faint Iax supernova population. The bolomet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40c9506a76f514e5d1569ae54f6f89e5
https://curis.ku.dk/ws/files/302384679/stac177.pdf

Novel constraints on the particle nature of dark matter from stellar streams

Autor: Gianfranco Bertone, Nilanjan Banik, Jo Bovy, Denis Erkal, T. J. L. de Boer

Publikováno v: Journal of Cosmology and Astroparticle Physics, 2021(10):043. IOP Publishing Ltd.
Journal of Cosmology and Astroparticle Physics, 10. IOP Publishing Ltd

Tidal streams are highly sensitive to perturbations from passing dark matter (DM) subhalos and thus provide a means of measuring their abundance. In a recent paper, we analyzed the distribution of stars along the GD-1 stream with a combination of dat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f05011f9711ad339be8c1e9821d31c7e
https://dare.uva.nl/personal/pure/en/publications/novel-constraints-on-the-particle-nature-of-dark-matter-from-stellar-streams(db0c9e11-f280-460c-a562-a91a2092515a).html