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91̽»¨
Black Hole

Lensing of space time around a black hole. At 91̽»¨ we study black holes observationally and theoretically on all size and time scales - it is some of our core work.

Credit: ALAIN RIAZUELO, IAP/UPMC/CNRS. CLICK HERE TO VIEW MORE IMAGES.

Dr Siddharth Maharana

PDRA

Research theme

  • Astronomy and astrophysics
  • Instrumentation
  • Exoplanets and planetary physics

Sub department

  • Astrophysics

Research groups

  • Extremely Large Telescope
siddharth.maharana@physics.ox.ac.uk
Telephone: 01865 (2)73503
Denys Wilkinson Building, room 361A
  • About
  • Current projects
  • Research
  • Publications

WALOP-South: A Four Camera One Shot Imaging Polarimeter for PASIPHAE Survey. Paper I -- Optical Design

ArXiv 2102.09505 (2021)

Authors:

Siddharth Maharana, John A Kypriotakis, AN Ramaprakash, Chaitanya Rajarshi, Ramya M Anche, Shrish, Dmitry Blinov, Hans Kristian Eriksen, Tuhin Ghosh, Eirik Gjerløw, Nikolaos Mandarakas, Georgia V Panopoulou, Vasiliki Pavlidou, Timothy J Pearson, Vincent Pelgrims, Stephen B Potter, Anthony CS Readhead, Raphael Skalidis, Konstantinos Tassis, Ingunn K Wehus

WALOP-South: A wide-field one-shot linear optical polarimeter for PASIPHAE survey

ArXiv 2102.09519 (2021)

Authors:

Siddharth Maharana, John A Kypriotakis, AN Ramaprakash, Pravin Khodade, Chaitanya Rajarshi, Bhushan S Joshi, Pravin Chordia, Ramya M Anche, Shrish Mishra, Dmitry Blinov, Hans Kristian Eriksen, Tuhin Ghosh, Eirik Gjerløw, Nikolaos Mandarakas, Georgia V Panopoulou, Vasiliki Pavlidou, Timothy J Pearson, Vincent Pelgrims, Stephen B Potter, Anthony CS Readhead, Raphail Skalidis, Konstantinos Tassis, Ingunn K Wehus

RoboPol: AGN polarimetric monitoring data

Monthly Notices of the Royal Astronomical Society 91̽»¨ University Press (OUP) 501:3 (2021) 3715-3726

Authors:

D Blinov, S Kiehlmann, V Pavlidou, GV Panopoulou, R Skalidis, E Angelakis, C Casadio, EN Einoder, T Hovatta, K Kokolakis, A Kougentakis, A Kus, N Kylafis, E Kyritsis, A Lalakos, I Liodakis, S Maharana, E Makrydopoulou, N Mandarakas, GM Maragkakis, I Myserlis, I Papadakis, G Paterakis, TJ Pearson, AN Ramaprakash, ACS Readhead, P Reig, A Słowikowska, K Tassis, K Xexakis, M Żejmo, JA Zensus

Abstract:

ABSTRACT We present uniformly reprocessed and re-calibrated data from the RoboPol programme of optopolarimetric monitoring of active galactic nuclei (AGNs), covering observations between 2013, when the instrument was commissioned, and 2017. In total, the data set presented in this paper includes 5068 observations of 222 AGN with Dec. > −25○. We describe the current version of the RoboPol pipeline that was used to process and calibrate the entire data set, and we make the data publicly available for use by the astronomical community. Average quantities summarizing optopolarimetric behaviour (average degree of polarization, polarization variability index) are also provided for each source we have observed and for the time interval we have followed it.

WALOP-South: A wide-field one-shot linear optical polarimeter for PASIPHAE survey

Ground-based and Airborne Instrumentation for Astronomy VIII SPIE (2020) 24-24

Authors:

Siddharth Maharana, John A Kypriotakis, Anamparambu N Ramaprakash, Pravin Khodade, Chaitanya V Rajarshi, Bhushan S Joshi, Pravin A Chordia, Ramya Anche, Shrish Mishra, Dmitry Blinov, Hans Kristian Eriksen, Tuhin Ghosh, Eirik Gjerløw, Nikolaos Mandarakas, Georgia V Panopoulou, Vasiliki Pavlidou, Timothy J Pearson, Vincent Pelgrims, Stephen Potter, Anthony CS Readhead, Raphail Skalidis, Konstantinos Tassis, Ingunn K Wehus

RoboPol: AGN polarimetric monitoring data

ArXiv 2012.00008 (2020)

Authors:

D Blinov, S Kiehlmann, V Pavlidou, GV Panopoulou, R Skalidis, E Angelakis, C Casadio, EN Einoder, T Hovatta, K Kokolakis, A Kougentakis, A Kus, N Kylafis, E Kyritsis, A Lalakos, I Liodakis, S Maharana, E Makrydopoulou, N Mandarakas, GM Maragkakis, I Myserlis, I Papadakis, G Paterakis, TJ Pearson, AN Ramaprakash, ACS Readhead, P Reig, A Słowikowska, K Tassis, K Xexakis, M Żejmo, JA Zensus

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