Search: id:"swepub:oai:DiVA.org:kth-299472" >
Sub-MeV spectroscop...
Sub-MeV spectroscopy with AstroSat-CZT imager for gamma ray bursts
-
- Chattopadhyay, Tanmoy (author)
- Kavli Inst Astrophys & Cosmol, 452 Lomita Mall, Stanford, CA 94305 USA.
-
- Gupta, Soumya (author)
- Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India.
-
- Sharma, Vidushi (author)
- KTH,Partikel- och astropartikelfysik,Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India.
-
show more...
-
- Iyyani, Shabnam (author)
- Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India.
-
- Ratheesh, Ajay (author)
- Univ Roma Tor Vergata, Dipartimento Fis, Via Ric Sci 1, I-00133 Rome, Italy.;INAF Ist Astrofis & Planetol Spaziali, Via Fosso Cavaliere, I-00133 Rome, RM, Italy.;Univ Roma La Sapienza, Dipartimento Fis, Ple A Moro 2, I-00185 Rome, Italy.
-
- Mithun, N. P. S. (author)
- Phys Res Lab, Ahmadabad 380009, Gujarat, India.
-
- Aarthy, E. (author)
- Phys Res Lab, Ahmadabad 380009, Gujarat, India.
-
- Palit, Sourav (author)
- Indian Inst Technol, Mumbai 400076, Maharashtra, India.
-
- Kumar, Abhay (author)
- Phys Res Lab, Ahmadabad 380009, Gujarat, India.
-
- Vadawale, Santosh V. (author)
- Phys Res Lab, Ahmadabad 380009, Gujarat, India.
-
- Rao, A. R. (author)
- Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India.;Tata Inst Fundamental Res, Mumbai 400005, Maharashtra, India.
-
- Bhalerao, Varun (author)
- Indian Inst Technol, Mumbai 400076, Maharashtra, India.
-
- Bhattacharya, Dipankar (author)
- Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India.
-
show less...
-
Kavli Inst Astrophys & Cosmol, 452 Lomita Mall, Stanford, CA 94305 USA Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India. (creator_code:org_t)
- 2021-07-21
- 2021
- English.
-
In: Journal of astrophysics and astronomy. - : Springer Nature. - 0250-6335 .- 0973-7758. ; 42:2
- Related links:
-
http://arxiv.org/pdf...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Cadmium-Zinc-Telluride Imager (CZTI) onboard AstroSat has been a prolific Gamma-Ray Burst (GRB) monitor. While the 2-pixel Compton scattered events (100-300 keV) are used to extract sensitive spectroscopic information, the inclusion of the low-gain pixels (similar to 20% of the detector plane) after careful calibration extends the energy range of Compton energy spectra to 600 keV. The new feature also allows single-pixel spectroscopy of the GRBs to the sub-MeV range which is otherwise limited to 150 keV. We also introduced a new noise rejection algorithm in the analysis ('Compton noise'). These new additions not only enhances the spectroscopic sensitivity of CZTI, but the sub-MeV spectroscopy will also allow proper characterization of the GRBs not detected by Fermi. This article describes the methodology of single, Compton event and veto spectroscopy in 100-900 keV combined for the GRBs detected in the first year of operation. CZTI in last five years has detected similar to 20 bright GRBs. The new methodologies, when applied on the spectral analysis for this large sample of GRBs, has the potential to improve the results significantly and help in better understanding the prompt emission mechanism.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- AstroSat
- CZT imager
- sub-MeV spectroscopy
- gamma ray burst
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Chattopadhyay, T ...
-
Gupta, Soumya
-
Sharma, Vidushi
-
Iyyani, Shabnam
-
Ratheesh, Ajay
-
Mithun, N. P. S.
-
show more...
-
Aarthy, E.
-
Palit, Sourav
-
Kumar, Abhay
-
Vadawale, Santos ...
-
Rao, A. R.
-
Bhalerao, Varun
-
Bhattacharya, Di ...
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Astronomy Astrop ...
- Articles in the publication
-
Journal of astro ...
- By the university
-
Royal Institute of Technology