2022-present postdoctoral researcher at CTP PAS
2021-2022 PTSF Aryabhatta Research Institute of Observational Sciences (ARIES), India
Research interest: Quasar absorption lines, intergalactic medium, Ly-alpha forest, quasar environment, Voigt profile, Machine learning
2015-2021 PhD Aryabhatta Research Institute of Observational Sciences (ARIES), India
Thesis title: Probing the physical state of the intergalactic medium and Quasar environments
Research interest: Quasar absorption lines, intergalactic medium, Ly-alpha forest, quasar environments
2013-2015 M.Sc. University of Delhi, India
Topics: Basic astronomy, and cosmology
Dissertation: Distance measurement in cosmology
2010-2013 B.Sc. Physics Hons. University of Delhi, India
Topics: Basic physics, Maths and Advanced computer science theory
In my thesis, we use Lyman alpha absorption in the spectrum of quasars and quasar pairs, to study their environment in Mpc scales. In this context, we also increase the available sample of quasar pairs and lensed quasars to study the tomography of the IGM at various length scales. The key outcomes of my thesis are the utilization of the same quasars to explore both the transverse and the longitudinal directions along with detailed simulation to validate the optical depth-dependent ionization correction on the pixel optical depth to constraint the overdensity profile and parameterize its dependence on various cosmological parameters and UVB models.
Currently, as a postdoctoral researcher at CFT, I am exploring machine learning as a tool to understand the selection bias for the galaxy catalogue.
Host galaxy properties of quasi-periodically erupting X-ray sources
Authors- T. Wevers, D.R. Pasham,P. Jalan, S. Rakshit, and R. Arco-dia
Journal- 2022, A&A, 659, L2
Gaia GraL: Gaia DR2 Gravitational Lens Systems. VII. XMM-Newton Observations of Lensed Quasars
Authors -Thomas Connor, Daniel Stern, Alberto Krone-Martins, S. G. Djorgovski, Matthew J. Graham, Dominic J. Walton, Ludovic Delchambre, Christine Ducourant, Ramachrisna Teixeira, Jean-François Le Campion, Jakob Sebastian den Brok, Dougal Dobie, Laurent Galluccio, Priyanka Jalan, Sergei A. Klioner, Jonas Klüter, Ashish A. Mahabal, Vibhore Negi, Anna Nierenberg, Quentin Petit, Sergio Scarano Jr, Eric Slezak, Dominique Sluse, Carolina Spíndola-Duarte, Jean Surdej, Joachim Wambsganss
Journal - Accepted for publication in ApJ
Constraining the excess optical depth profile of high-z quasars using the longitudinal proximity effect
Authors - Jalan, Priyanka; Chand, Hum; Srianand, Raghunathan
Journal - 2021, MNRAS, 505, 689
Gaia GraL: GaiaDR2 Gravitational Lens Systems. VI. Spectroscopic confirmation and modeling of quadruply-imaged lensed quasars
Authors -D. Stern, S. G. Djorgovski, A. Krone-Martins, D. Sluse, L. Delchambre, C. Ducourant, R. Teixeira, J. Surdej, C. Boehm, J. Den Brok, A. Drake, L. Galluccio, M. J. Graham, P. Jalan, J. Kluter, J. F. Lecampion, A. Mahabal, F. Mignard, A. Nierenberg, S. Scarano, J. Simon, E. Slezak, J. Wambsganss
Journal - 2021, ApJ, 921, 42S
Gaia GraL:GaiaDR2 Gravitational Lens Systems. V.Doubly-imaged QSOs discovered from entropy and wavelets
Authors - A. Krone-Martins, M.J. Graham, D. Stern, S.G. Djorgovski, L. Delchambre, C. Ducourant, R. Teixeira,A.J. Drake, S. Scarano Jr., J. Surdej, L. Galluccio, P. Jalan, O. Wertz12, J. Klüter, F. Mignard,C. Spindola-Duarte, D. Dobie, E. Slezak, D. Sluse, T. Murphy, C. Boehm,A. M. Nierenberg, U. Bastian, J. Wambsganss, J.-F. LeCampion
Journal - Submitted to A&A
Probing the environment of high-z quasars using the proximity effect in projected quasar pairs
Authors - Jalan, Priyanka; Chand, Hum; Srianand, Raghunathan
Journal - 2019, ApJ, 884, 151
Transverse and Longitudinal proximity effect
Authors - Jalan, Priyanka; Chand, Hum; Srianand, Raghunathan
Journal - Bulletin de la Société Royale des Sciences de Liège 2018, BSRSL, 87, 330
Probing the central engine and environment of AGN using ARIES 1.3-m and 3.6-m telescopes
Authors - Chand, Hum; Rakshit, Suvendu; Jalan, Priyanka; Ojha, Vineet; Srianand, Raghunathan; Vivek, Mariappan; Mishra, Sapna; Omar, Amitesh; Kumar, Parveen; Joshi, Ravi
Journal - Bulletin de la Société Royale des Sciences de Liège 2018, BSRSL, 87, 291
