Roaring to Softly Whispering: X-Ray Emission after ∼3.7 yr at the Location of the Transient AT2018cow and Implications for Accretion-powered Scenarios

Autor: Giulia Migliori, R. Margutti, B. D. Metzger, R. Chornock, C. Vignali, D. Brethauer, D. L. Coppejans, T. Maccarone, L. Rivera Sandoval, J. S. Bright, T. Laskar, D. Milisavljevic, E. Berger, A. J. Nayana

Publikováno v: The Astrophysical Journal Letters, Vol 963, Iss 1, p L24 (2024)

We present the first deep X-ray observations of luminous fast blue optical transient (LFBOT) AT 2018cow at ∼3.7 yr since discovery, together with the reanalysis of the observation at δ t ∼ 220 days. X-ray emission is significantly detected at a

Externí odkaz: https://doaj.org/article/00f566ea293e46778ab2f4f352b06703

COSMIC: An Ethernet-based Commensal, Multimode Digital Backend on the Karl G. Jansky Very Large Array for the Search for Extraterrestrial Intelligence

Autor: C. D. Tremblay, S. S. Varghese, J. Hickish, P. B. Demorest, C. Ng, A. P. V. Siemion, D. Czech, R. A. Donnachie, W. Farah, V. Gajjar, M. Lebofsky, D. H. E. MacMahon, T. Myburgh, M. Ruzindana, J. S. Bright, A. Erickson, K. Lacker

Publikováno v: The Astronomical Journal, Vol 167, Iss 1, p 35 (2023)

The primary goal of the search for extraterrestrial intelligence is to gain an understanding of the prevalence of technologically advanced beings (organic or inorganic) in the Galaxy. One way to approach this is to look for technosignatures: remotely

Externí odkaz: https://doaj.org/article/b3191100ad2141fcb20e678e4eb2336c

Day-time-scale variability in the radio light curve of the Tidal Disruption Event AT2022cmc: confirmation of a highly relativistic outflow

Autor: L Rhodes, J S Bright, R Fender, I Sfaradi, D A Green, A Horesh, K Mooley, D Pasham, S Smartt, D J Titterington, A J van der Horst, D R A Williams

Publikováno v: Rhodes, L, Bright, J S, Fender, R, Sfaradi, I, Green, D A, Horesh, A, Mooley, K, Pasham, D, Smartt, S, Titterington, D J, van der Horst, A J & Williams, D R A 2023, ' Day-time-scale variability in the radio light curve of the Tidal Disruption Event AT2022cmc: confirmation of a highly relativistic outflow ', Monthly Notices of the Royal Astronomical Society, vol. 521, no. 1, pp. 389–395 . https://doi.org/10.1093/mnras/stad344
Rhodes, L, Bright, J S, Fender, R, Sfaradi, I, Green, D A, Horesh, A, Mooley, K, Pasham, D, Smartt, S, Titterington, D J, van der Horst, A J & Williams, D R A 2023, ' Day-time-scale variability in the radio light curve of the Tidal Disruption Event AT2022cmc: confirmation of a highly relativistic outflow ', Monthly Notices of the Royal Astronomical Society, vol. 521, no. 1, pp. 389-395 . https://doi.org/10.1093/mnras/stad344

Tidal disruption events (TDEs) are transient, multi-wavelength events in which a star is ripped apart by a supermassive black hole. Observations show that in a small fraction of TDEs, a short-lived, synchrotron emitting jet is produced. We observed t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7afa3e0960f414be63992046d010b551
https://www.repository.cam.ac.uk/handle/1810/346015

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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