no code implementations • 26 Feb 2021 • Ajay Ratheesh, A. R. Rao, N. P. S Mithun, Santosh V. Vadawale, Ajay Vibhute, Dipankar Bhattacharya, Priya Pradeep, S. Sreekumar, Varun Bhalerao
As hard X-ray instruments like CZTI are sensitive to cosmic rays in addition to X-rays, it is required to identify and remove particle induced or other noise events and select events for scientific analysis of the data.
High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics
no code implementations • 26 Feb 2021 • Tanmoy Chattopadhyay, Soumya Gupta, Vidushi Sharma, Shabnam Iyyani, Ajay Ratheesh, N. P. S. Mithun, E. Aarthy, Sourav Palit, Abhay Kumar, Santosh V Vadawale, A. R. Rao, Varun Bhalerao, Dipankar Bhattacharya
While the 2-pixel Compton scattered events (100 - 300 keV) are used to extract sensitive spectroscopic information, the inclusion of the low-gain pixels (around 20% of the detector plane) after careful calibration extends the energy range of Compton energy spectra to 600 keV.
High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics
no code implementations • 26 Feb 2021 • Abhay Kumar, Tanmoy Chattopadhyay, Santosh V Vadawale, A. R. Rao, Soumya Gupta, Mithun N. P. S., Varun Bhalerao, Dipankar Bhattacharya
Here we explore the possibility of using the Compton events as well as the low gain pixels to extend the spectroscopic energy range of CZTI for ON-axis bright X-ray sources.
Instrumentation and Methods for Astrophysics High Energy Astrophysical Phenomena
no code implementations • 25 Feb 2021 • Josiah N. Purdum, Zhong-Yi Lin, Bryce T. Bolin, Kritti Sharma, Phillip I. Choi, Varun Bhalerao, Harsh Kumar, Robert Quimby, Joannes C. Van Roestel, Chengxing Zhai, Yanga R. Fernandez, Josef Hanuš, Carey M. Lisse, Dennis Bodewits, Christoffer Fremling, Nathan Ryan Golovich, Chen-Yen Hsu, Wing-Huen Ip, Chow-Choong Ngeow, Navtej S. Saini, Michael Shao, Yuhan Yao, Tomás Ahumada, Shreya Anand, Igor Andreoni, Kevin B. Burdge, Rick Burruss, Chan-Kao Chang, Chris M. Copperwheat, Michael Coughlin, Kishalay De, Richard Dekany, Alexandre Delacroix, Andrew Drake, Dmitry Duev, Matthew Graham, David Hale, Erik C. Kool, Mansi M. Kasliwal, Iva S. Kostadinova, Shrinivas R. Kulkarni, Russ R. Laher, Ashish Mahabal, Frank J. Masci, Przemyslaw J. Mróz, James D. Neill, Reed Riddle, Hector Rodriguez, Roger M. Smith, Richard Walters, Lin Yan, Jeffry Zolkower
We observed Episodically Active Asteroid (6478) Gault in 2020 with multiple telescopes in Asia and North America and have found that it is no longer active after its recent outbursts at the end of 2018 and start of 2019.
Time Series Analysis Earth and Planetary Astrophysics
1 code implementation • 25 Oct 2018 • Anna Y. Q. Ho, E. Sterl Phinney, Vikram Ravi, S. R. Kulkarni, Glen Petitpas, Bjorn Emonts, Varun Bhalerao, Ray Blundell, S. Bradley Cenko, Dougal Dobie, Ryan Howie, Nikita Kamraj, Mansi M. Kasliwal, Tara Murphy, Daniel A. Perley, T. K. Sridharan, Ilsang Yoon
Regardless of the nature of this central engine, this source heralds a new class of energetic transients shocking a dense medium, which at early times are most readily observed at millimeter wavelengths.
High Energy Astrophysical Phenomena