[en] The International Liquid Mirror Telescope (ILMT) is a 4-m aperture, zenith-pointing telescope with a field of view of 22, situated in the foothills of the Himalayas. The telescope operates in continuous survey mode, making it a useful instrument for time-domain astronomy, particularly for detecting transients, variable stars, active galactic nuclei variability, and asteroids. This paper presents thePYLMT transient detection pipeline to detect such transient/varying sources in the ILMT images. The pipeline utilizes the image subtraction technique to compare a pair of images from the same field, identifying such sources in subtracted images with the help of convolutional neural network (CNN)-based real/bogus classifiers.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Pranshu, Kumar; Aryabhatta Research Institute of Observational sciencES (ARIES), Manora Peak, Nainital, 263001, India ; Department of Applied Optics and Photonics, University of Calcutta, Kolkata, 700106, India
Misra, Kuntal; Aryabhatta Research Institute of Observational sciencES (ARIES), Manora Peak, Nainital, 263001, India
Ailawadhi, Bhavya; Aryabhatta Research Institute of Observational sciencES (ARIES), Manora Peak, Nainital, 263001, India ; Department of Physics, Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur, 273009, India
Dubey, Monalisa; Aryabhatta Research Institute of Observational sciencES (ARIES), Manora Peak, Nainital, 263001, India ; Department of Applied Physics, Mahatma Jyotiba Phule Rohilkhand University, Bareilly, 243006, India
Dukiya, Naveen; Aryabhatta Research Institute of Observational sciencES (ARIES), Manora Peak, Nainital, 263001, India ; Department of Applied Physics, Mahatma Jyotiba Phule Rohilkhand University, Bareilly, 243006, India
Filali, Sara ; Université de Liège - ULiège > Unités de recherche interfacultaires > Space sciences, Technologies and Astrophysics Research (STAR)
Hickson, Paul; Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada
Kumar, Brajesh; South-Western Institute for Astronomy Research, Yunnan University, Kunming, 650500, Yunnan, PR China
Negi, Vibhore; Inter-University Centre for Astronomy and Astrophysics, Ganeshkhind, Pune, 411007, India
Surdej, Jean ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO)
Language :
English
Title :
PyLMT: A transient detection pipeline for the 4-m International Liquid Mirror Telescope
Abadi M. et al., 2016, TensorFlow: a system for large-scale machine learning, Proceedings of the 12th USENIX Conference on Operating Systems Design and Implementation (OSDI’16), 265, https://dl.acm.org/doi/10.5555/3026877.3026899
Acero-Cuellar T., Bianco F., Dobler G., Sako M., Qu H., LSST Dark Energy Science Collaboration, 2023, AJ, 166, 115
Ackley K., Eikenberry S. S., Yildirim C., Klimenko S., Garner A., 2019, AJ, 158, 172
Ailawadhi B. et al., 2024, Bull. Soc. R. Sci. Liege, 93, 820
Bailey S., Aragon C., Romano R., Thomas R. C., Weaver B. A., Wong D., 2007, ApJ, 665, 1246
Becker A., 2015, Astrophysics Source Code Library, record ascl:1504.004
Bellm E. C. et al., 2019, PASP, 131, 018002
Bellm E. C., Kulkarni S. R., Intermediate Palomar Transient Factory Collaboration, 2017, in American Astronomical Society Meeting Abstracts #229. p. 313.01
Beroiz M., Cabral J. B., Sanchez B., 2020, Astroalign: A Python module for astronomical image registration, Astronomy and Computing, 32, 100384, https://www.sciencedirect.com/science/article/pii/S221313372030038X
Berthier J., Vachier F., Thuillot W., Fernique P., Ochsenbein F., Genova F., Lainey V., Arlot J.-E., 2006, in Gabriel C., Arviset C., Ponz D., Enrique S., eds, ASP Conf. Ser. Vol. 351, Astronomical Data Analysis Software and Systems XV. Astron. Soc. Pac., San Francisco, p. 367
Bradley L. et al., 2016, Astrophysics Source Code Library, record ascl:1609.011
Bramich D. M., 2008, MNRAS, 386, L77
Brink H., Richards J. W., Poznanski D., Bloom J. S., Rice J., Negahban S., Wainwright M., 2013, MNRAS, 435, 1047
Cabrera-Vives G., Reyes I., Förster F., Estévez P. A., Maureira J.-C., 2017, ApJ, 836, 97
Cao Y., Nugent P. E., Kasliwal M. M., 2016, PASP, 128, 114502
Carrasco-Davis R. et al., 2021, AJ, 162, 231
Chambers K. C. et al., 2016, preprint (arXiv:1612.05560)
Chollet F. et al., 2015, keras, https://keras.io
Denneau L. et al., 2013, PASP, 125, 357
Duev D. A. et al., 2019, MNRAS, 489, 3582
Duev D. A. et al., 2021, AJ, 161, 218
Dukiya N. et al., 2024, Bull. Soc. R. Sci. Liege, 93, 837
Egret D., Wenger M., Dubois P., 1991, in Albrecht M. A., Egret D., eds, Astrophysics and Space Science Library Vol. 171, Databases and On-line Data in Astronomy. Astron. Soc. Pac., San Francisco, p. 79
Makhlouf K., Turpin D., Corre D., Karpov S., Kann D. A., Klotz A., 2022, A&A, 664, A81
Masci F. J. et al.., 2019, PASP, 131, 018003
McGraw J. T., Stockman H. S., Angel J. R. P., Epps H., Williams J. T., 1982, Crawford D. L., Instrumentation in Astronomy IV, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, SPIE,Tucson,UnitedStates,331,137,https://doi.org/10.1117/12.933448
Misra K. et al.., 2024, Bull. Soc. R. Sci. Liège, 93, 872,
Moré J. J., 1978, in Vol. 630, Lecture Notes in Mathematics. Springer Verlag, Berlin, p. 105
Nair V., Hinton G., 2010, Rectified linear units improve restricted boltzmann machines, Proceedings of the 27th International Conference on International Conference on Machine Learning (ICML’10), Omnipress, USA, 807
Negi V. et al., 2024, Bull. Soc. R. Sci. Liege, 93, 863
Pranshu K. et al., 2023, Transient Name Server Discovery Report, 2023-3062, 1
Pranshu K. et al., 2024a, Bull. Soc. R. Sci. Liege, 93, 828
Pranshu K. et al., 2024b, Transient Name Server Discovery Report, 2024-964, 1
Sánchez B. O., Cabral J. B., Beroiz M., Domínguez M., Lares M., 2019, Astrophysics Source Code Library, record ascl:1904.025
Sánchez B., Beroiz M., Chalela M., Cabral J., 2020, Two Co-addition and Image Subtraction Codes, http://dx.doi.org/10.13140/RG.2.2.11455.232 03
Sánchez-Sáez P. et al., 2021, AJ, 161, 141
Santos A. et al., 2024, MNRAS, 529, 59
Srivastava N., Hinton G., Krizhevsky A., Sutskever I., Salakhutdinov R., 2014, J. Mach. Learn. Res., 15, 1929
Steeghs D. et al., 2022, MNRAS, 511, 2405
Surdej J. et al., 2006, in Stepp L. M., ed., Proc. SPIE Conf. Ser. Vol. 6267, Ground-based and Airborne Telescopes. SPIE, Bellingham, p. 626704
Surdej J. et al., 2018, Bull. Soc. R. Sci. Liège, 87, 68
Tonry J. L. et al., 2018, PASP, 130, 064505
Turpin D. et al., 2020, MNRAS, 497, 2641
Virtanen P. et al., 2020, Nat. Methods, 17, 261
Wood-Vasey W. M. et al., 2004, New A Rev., 48, 637
