Zobrazeno 1 - 10
of 104
pro vyhledávání: '"David Mkrtichian"'
Autor:
Yuka Terada, Hauyu Baobab Liu, David Mkrtichian, Jinshi Sai, Mihoko Konishi, Ing-Guey Jiang, Takayuki Muto, Jun Hashimoto, Motohide Tamura
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 2, p 147 (2023)
The powerful, high-energy magnetic activities of young stars play important roles in the magnetohydrodynamics in the innermost parts of the protoplanetary disks. In addition, the associated UV and X-ray emission dictates the photochemistry; moreover,
Externí odkaz:
https://doaj.org/article/072de567ac114cc2b5b5851af74c85f7
Autor:
David Mkrtichian, Khemsinan Gunsriviwat, Holger Lehmann, Chris Engelbrecht, Andrew Tkachenko, Victor Nazarenko
Publikováno v:
Galaxies, Vol 10, Iss 5, p 97 (2022)
We present a review of the latest results of studies of the class of mass-accreting pulsating components of semi-detached eclipsing binaries known as oEA stars. The application of the techniques of asteroseismology to this class of stars unlocks new
Externí odkaz:
https://doaj.org/article/060d7e7b753f463a9f608fa78ae8170f
Publikováno v:
Frontiers in Astronomy & Space Sciences; 2024, p1-10, 10p
Autor:
David Mkrtichian, Byeong-Cheol Lee, S. A. Korotin, Leonid S. Lyubimkov, Inwoo Han, Dmitry B. Poklad, Dmitry V. Petrov
Publikováno v:
Astronomische Nachrichten. 342:497-514
Autor:
P. T. O'Brien, David Mkrtichian, Kendall Ackley, U. Burhanudin, T. Heikkilä, R. Cutter, Andrew J. Levan, Paul Chote, Benjamin P. Gompertz, Justyn R. Maund, Supachai Awiphan, Y. L. Mong, Klaas Wiersema, E. J. Daw, James McCormac, G. Ramsay, Krzysztof Ulaczyk, S. Tooke, Enric Palle, D. Mata Sánchez, R. Eyles-Ferris, Christopher J. Duffy, T. Killestein, Saran Poshyachinda, Eric Thrane, Seppo Mattila, James Mullaney, S. Williams, E. Rol, Puji Irawati, S. Aukkaravittayapun, L. K. Nuttall, Don Pollacco, Rubina Kotak, Danny Steeghs, Rene P. Breton, Utane Sawangwit, R. L. C. Starling, A. Chrimes, J. D. Lyman, L. Makrygianni, Elizabeth R. Stanway, Mark Kennedy, S. P. Littlefair, P. A. Strøm, Duncan K. Galloway, Martin J. Dyer, V. S. Dhillon
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 503, 4, pp. 4838-4854
Monthly Notices of the Royal Astronomical Society
Killestein, T L, Lyman, J, Steeghs, D, Ackley, K, Dyer, M J, Ulaczyk, K, Cutter, R, Mong, Y-L, Galloway, D K, Dhillon, V, O'Brien, P, Ramsay, G, Poshyachinda, S, Kotak, R, Breton, R P, Nuttall, L K, Pallé, E, Pollacco, D, Thrane, E, Aukkaravittayapun, S, Awiphan, S, Burhanudin, U, Chote, P, Chrimes, A, Daw, E, Duffy, C, Eyles-Ferris, R, Gompertz, B, Heikkilä, T, Irawati, P, Kennedy, M R, Levan, A, Littlefair, S, Makrygianni, L, Sánchez, D M, Mattila, S, Maund, J, McCormac, J, Mkrtichian, D, Mullaney, J, Rol, E, Sawangwit, U, Stanway, E, Starling, R, Strøm, P A, Tooke, S & Wiersema, K 2021, ' Transient-optimised real-bogus classification with Bayesian convolutional neural networks-sifting the GOTO candidate stream ', Monthly Notices of the Royal Astronomical Society, vol. 503, no. 4, pp. 4838-4854 . https://doi.org/10.1093/mnras/stab633
arXiv
Monthly Notices of the Royal Astronomical Society, 503, 4838-4854
Monthly Notices of the Royal Astronomical Society
Killestein, T L, Lyman, J, Steeghs, D, Ackley, K, Dyer, M J, Ulaczyk, K, Cutter, R, Mong, Y-L, Galloway, D K, Dhillon, V, O'Brien, P, Ramsay, G, Poshyachinda, S, Kotak, R, Breton, R P, Nuttall, L K, Pallé, E, Pollacco, D, Thrane, E, Aukkaravittayapun, S, Awiphan, S, Burhanudin, U, Chote, P, Chrimes, A, Daw, E, Duffy, C, Eyles-Ferris, R, Gompertz, B, Heikkilä, T, Irawati, P, Kennedy, M R, Levan, A, Littlefair, S, Makrygianni, L, Sánchez, D M, Mattila, S, Maund, J, McCormac, J, Mkrtichian, D, Mullaney, J, Rol, E, Sawangwit, U, Stanway, E, Starling, R, Strøm, P A, Tooke, S & Wiersema, K 2021, ' Transient-optimised real-bogus classification with Bayesian convolutional neural networks-sifting the GOTO candidate stream ', Monthly Notices of the Royal Astronomical Society, vol. 503, no. 4, pp. 4838-4854 . https://doi.org/10.1093/mnras/stab633
arXiv
Monthly Notices of the Royal Astronomical Society, 503, 4838-4854
Large-scale sky surveys have played a transformative role in our understanding of astrophysical transients, only made possible by increasingly powerful machine learning-based filtering to accurately sift through the vast quantities of incoming data g
Autor:
Anton Kochergin, Ekaterina Chornaya, G. Kornienko, Igor Luk'yanyk, Igor Molotov, Oleksandra Ivanova, Evgenij Zubko, Saran Poshyachinda, Sung-Soo Kim, Gorden Videen, Maxim Zheltobryukhov, David Mkrtichian
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 498:1814-1825
We measure the degree of linear polarization of comet 46P/Wirtanen during two months, embracing the perihelion passage in 2018 December with phase angles ranging from {\alpha}=18.1 to 46.4 deg. The polarimetric response PQ obtained resembles what was
Autor:
Meenakshi Purandardas, Aruna Goswami, J Shejeelammal, Mayani Sonamben, Ganesh Pawar, David Mkrtichian, Vijayakumar H Doddamani, Santosh Joshi
We present the results of the high-resolution (R$\sim$60,000) spectroscopic analysis of the star LAMOSTJ045019.27+394758.7 (hereafter J045) from the list of carbon stars of LAMOST DR2. From our analysis, we find that J045 does not exhibit the spectra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57a01d3ba01f07dd02af446d792b6497
Autor:
Rene P. Breton, B. P. Gompertz, Seppo Mattila, S. P. Littlefair, James Mullaney, J. D. Lyman, K. Noysena, Y. L. Mong, Eric Thrane, Danny Steeghs, Justyn R. Maund, T. R. Marsh, Klaas Wiersema, Michael J. I. Brown, E. Rol, Christopher J. Duffy, G. Ramsay, David Mkrtichian, Duncan K. Galloway, L. K. Nuttall, Martin J. Dyer, Puji Irawati, P. A. Strøm, P. T. O'Brien, T. Heikkilä, K. Ackley, Mark Kennedy, D. Mata-Sanchez, A. Chrimes, Utane Sawangwit, Don Pollacco, Elizabeth R. Stanway, V. S. Dhillon, R. L. C. Starling, E. J. Daw, Supachai Awiphan, Krzysztof Ulaczyk, S. Tooke, T. Killestein, Rubina Kotak, R. Cutter, Paul Chote, R. Eyles-Ferris, James McCormac, Andrew J. Levan, L. Makrygianni, U. Burhanudin, Enric Palle
The typical detection rate of $\sim1$ gamma-ray burst (GRB) per day by the \emph{Fermi} Gamma-ray Burst Monitor (GBM) provides a valuable opportunity to further our understanding of GRB physics. However, the large uncertainty of the \emph{Fermi} loca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::870915cadd8301f008122a2f74183871
http://wrap.warwick.ac.uk/158445/1/WRAP-searching-Fermi-GRB-optical-counterparts-with-prototype-Gravitational-wave-Optical-Transient-Observer-(GOTO)-2021.pdf
http://wrap.warwick.ac.uk/158445/1/WRAP-searching-Fermi-GRB-optical-counterparts-with-prototype-Gravitational-wave-Optical-Transient-Observer-(GOTO)-2021.pdf
Autor:
Y. L. Mong, Duncan K. Galloway, V. S. Dhillon, James McCormac, U. Burhanudin, R. Eyles-Ferris, P. T. O'Brien, Danny Steeghs, Martin J. Dyer, S. P. Littlefair, Kendall Ackley, K. Noysena, Utane Sawangwit, L. K. Nuttall, Don Pollacco, R. L. C. Starling, T. Heikkilä, Mark Kennedy, Andrew J. Levan, J. D. Lyman, David Mkrtichian, Enric Palle, P. A. Strøm, Seppo Mattila, A. Chrimes, Klaas Wiersema, Elizabeth R. Stanway, James Mullaney, D. Mata-Sanchez, Puji Irawati, B. P. Gompertz, Christopher J. Duffy, Eric Thrane, Supachai Awiphan, Rene P. Breton, Krzysztof Ulaczyk, S. Tooke, T. Killestein, E. J. Daw, Rubina Kotak, Justyn R. Maund, G. Ramsay, Paul Chote, R. Cutter, L. Makrygianni
Publikováno v:
Burhanudin, U F, Maund, J R, Killestein, T, Ackley, K, Dyer, M J, Lyman, J, Ulaczyk, K, Cutter, R, Mong, Y-L, Steeghs, D, Galloway, D K, Dhillon, V, O'Brien, P, Ramsay, G, Noysena, K, Kotak, R, Breton, R P, Nuttall, L, Pallé, E, Pollacco, D, Thrane, E, Awiphan, S, Chote, P, Chrimes, A, Daw, E, Duffy, C, Eyles-Ferris, R, Gompertz, B, Heikkilä, T, Irawati, P, Kennedy, M R, Levan, A, Littlefair, S, Makrygianni, L, Mata-Sánchez, D, Mattila, S, McCormac, J, Mkrtichian, D, Mullaney, J, Sawangwit, U, Stanway, E, Starling, R, Strøm, P, Tooke, S & Wiersema, K 2021, ' Light curve classification with recurrent neural networks for GOTO : dealing with imbalanced data ', Monthly Notices of the Royal Astronomical Society, vol. 505, no. 3, pp. 4345-4361 . https://doi.org/10.1093/mnras/stab1545
The advent of wide-field sky surveys has led to the growth of transient and variable source discoveries. The data deluge produced by these surveys has necessitated the use of machine learning (ML) and deep learning (DL) algorithms to sift through the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81ac2607da546de6bf614fe7f4fccd51
https://researchportal.port.ac.uk/portal/en/publications/light-curve-classification-with-recurrent-neural-networks-for-goto(571902a2-a7ea-48c5-b98a-3f5c85dc6576).html
https://researchportal.port.ac.uk/portal/en/publications/light-curve-classification-with-recurrent-neural-networks-for-goto(571902a2-a7ea-48c5-b98a-3f5c85dc6576).html
Autor:
Vineet Kumar Mannaday, Parijat Thakur, John Southworth, Ing-Guey Jiang, D. K. Sahu, L. Mancini, M. Vaňko, Emil Kundra, Pavol Gajdoš, Napaporn A-thano, Devesh P. Sariya, Li-Chin Yeh, Evgeny Griv, David Mkrtichian, Aleksey Shlyapnikov
Publikováno v:
The Astronomical Journal. 164:198
We present and analyze 58 transit light curves of TrES-3b and 98 transit light curves of Qatar-1b observed by Transiting Exoplanet Survey Satellite (TESS), plus two transit light curves of Qatar-1b observed by us using a ground-based 1.23\,m telescop