Unveiling photometric transients with the ILMT and their follow-up using DOT
Abstract
The two 4-m class telescopes at the Devasthal site in India are complementary: the 4-m International Liquid Mirror Telescope (ILMT) is dedicated to the discovery of new transient phenomena, which can be followed up using the 3.6-m Devasthal Optical Telescope (DOT) for their optical characterisation. The ILMT continuously surveys a 22.3′ × 22.3′ wide strip of the zenith sky. A dedicated transient detection and classification pipeline, PyLMT, based on optimised image subtraction and convolutional neural network (CNN) techniques, enables the discovery of numerous photometric transients with the ILMT. However, these transient discoveries still require spectroscopic confirmation to determine their types, for which spectra obtained with the DOT are essential. Here, we present a selection of photometric transients, specifically supernova candidates. We investigate their photometric and spectroscopic properties using ILMT light curves, supplemented with ZTF data and DOT spectroscopic observations.
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BibTeX
@misc{kumari2026unveiling,
title = {{Unveiling photometric transients with the ILMT and their follow-up using DOT}},
author = {Priyanshi Kumari and Bhavya Ailawadhi and Talat Akhunov and Monalisa Dubey and Naveen Dukiya and Sara Filali and Paul Hickson and Gokul Singh Mehra and Kuntal Misra and Vibhore Negi and Kumar Pranshu and Jean Surdej and Sarvesh Kumar Yadav},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.18909},
eprint = {2610.18909},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.18909},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Unveiling photometric transients with the ILMT and their follow-up using DOT
AU - Priyanshi Kumari
AU - Bhavya Ailawadhi
AU - Talat Akhunov
AU - Monalisa Dubey
AU - Naveen Dukiya
AU - Sara Filali
AU - Paul Hickson
AU - Gokul Singh Mehra
AU - Kuntal Misra
AU - Vibhore Negi
AU - Kumar Pranshu
AU - Jean Surdej
AU - Sarvesh Kumar Yadav
PY - 2026
DA - 2026/10/12
PB - arXiv
DO - 10.48550/arxiv.2610.18909
UR - https://arxiv.org/abs/2610.18909
AB - The two 4-m class telescopes at the Devasthal site in India are complementary: the 4-m International Liquid Mirror Telescope (ILMT) is dedicated to the discovery of new transient phenomena, which can be followed up using the 3.6-m Devasthal Optical Telescope (DOT) for their optical characterisation. The ILMT continuously surveys a 22.3^′ × 22.3^′ wide strip of the zenith sky. A dedicated transient detection and classification pipeline, PyLMT, based on optimised image subtraction and convolutional neural network (CNN) techniques, enables the discovery of numerous photometric transients with the ILMT. However, these transient discoveries still require spectroscopic confirmation to determine their types, for which spectra obtained with the DOT are essential. Here, we present a selection of photometric transients, specifically supernova candidates. We investigate their photometric and spectroscopic properties using ILMT light curves, supplemented with ZTF data and DOT spectroscopic observations.
ER -