1,725,751 research outputs found
Dr Abhijeet Gaur work done in the field of XAFS
No full text<p>Dr Abhijeet Gaur work done in the field of XAFS</p
Simulation hypothesis - a theoretical framework by abhijeet thakur
No full textThis project proposes a new framework for understanding physical constraints such as the speed of light, gravity, and quantum uncertainty as potential signs of a simulated universe. Authored by Abhijeet Thakur, it introduces testable predictions and encourages further exploration into the Simulation Hypothesis
The Cosmic Evolution of C IV Absorbers at 1.4 < z < 4.5: Insights from 100,000 Systems in DESI Quasars
No full textAbhijeet Anand et al.We present the largest catalog to date of triply ionized carbon (C IV) absorbers detected in quasar spectra from the Dark Energy Spectroscopic Instrument. Using an automated matched-kernel convolution method with adaptive signal-to-noise thresholds, we identify 101,487 C IV systems in the redshift range 1.4 < z < 4.5 from 300,637 quasar spectra. Completeness is estimated via Monte Carlo simulations, and the catalog is 50% complete at EWC IV 0.4 Å. The differential equivalent width frequency distribution declines exponentially and shows weak redshift evolution. The absorber incidence per unit comoving path increases by a factor of 2–5 from z ≈ 4.5 to z ≈ 1.4, with stronger redshift evolution for strong systems. Using column densities derived from the apparent optical depth method, we constrain the cosmic mass density of C IV, ΩC IV, which increases by a factor of ∼3.8 from (0.82 ± 0.05) × 10−8 at z ≈ 4.5 to (3.16 ± 0.2) × 10−8 at z ≈ 1.4. From ΩC IV, we estimate a lower limit on intergalactic medium metallicity log(ZIGM/Z ) --3.25 at z ∼ 2.3, with a smooth decline at higher redshifts. These trends trace the cosmic star formation history and He II photoheating rate, suggesting a link between C IV enrichment, star formation, and UV background over ∼3 Gyr. The catalog also provides a critical resource for future studies connecting circumgalactic metals to galaxy evolution, especially near cosmic noon.We thank the anonymous referee for providing constructive feedback that significantly improved the quality and clarity of the paper. All of the computations were performed at the DOE’s high-performance computing facility, NERSC, located at Berkeley Lab. This material is based upon work supported by the U.S. Department of Energy (DOE), Office of Science, Office of High-Energy Physics, under contract No. DE–AC02–05CH11231, and by the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility under the same contract. Additional support for DESI was provided by the U.S. National Science Foundation (NSF), Division of Astronomical Sciences under contract No. AST-0950945 to the NSF’s National Optical-Infrared Astronomy Research Laboratory; the Science and Technology Facilities Council of the United Kingdom; the Gordon and Betty Moore Foundation; the Heising-Simons Foundation; the French Alternative Energies and Atomic Energy Commission (CEA); the National Council of Humanities, Science and Technology of Mexico (CONAHCYT); the Ministry of Science and Innovation of Spain (MICINN); and by the DESI Member Institutions (https://www.desi.lbl.gov/collaborating-institutions). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the U.S. National Science Foundation, the U.S. Department of Energy, or any of the listed funding agencies.Peer reviewe
The Cosmic Evolution of CIV Absorbers at 1.4 < z < 4.5 : Insights from 100,000 Systems in DESI Quasars [Dataset]
No full textThis Zenodo link provides the data used to reproduce the plots in the results section of the paper titled The Cosmic Evolution of CIV absorbers at 1.4 < z < 4.5 : Insights from 100,000 Systems in DESI Quasars . The DESI DR2 raw data used to generate this dataset will be released publicly in the future. However, the DR1 CIV catalog is publicly available at: https://github.com/abhi0395/desi-dr1-civ. -- DESI-DR1 VAC will also be available on : https://data.desi.lbl.gov/doc/releases/dr1/#value-added-catalogs. -- The paper is available at: https://arxiv.org/abs/2504.20299. -- The associated code that was used to build the catalog is available at: 10.5281/zenodo.15685771DESI Collaboration: Abhijeet Anand, Gaztañaga, Enrique, et al.Peer reviewe
Indian Responses to 21st Century African Women's Writing
No full textAbhijeet Dawle, Shivaji Methe “Indian Responses to 21st Century African Women’s Writing.” Publisher: Vidhan Publishing Company, ISBN 978-81-960565-7-5, September 2023
CULTURAL CONFLICT IN AYI KWEI ARMAH’S WHY ARE WE SO BLEST?
No full textAbhijeet Dawle, “Cultural Conflict in Ayi Kwei Armah’s Why Are We So Blest?”, RESEARCH ARENA, ISSN 2320-6263, Vol. 2, Issue no. 12, pp.11 – 16, March 2015
MAgPIE model - Transition to timber cities can help reduce carbon emissions without increasing competition for land
No full textMAgPIE source code for reproducibility
Transition to timber cities can help reduce carbon emissions without increasing competition for land
(Nature Communications, 2022, forthcoming)
Abhijeet Mishra1,2,*, Florian Humpenöder1, Galina Churkina1, Christopher P.O. Reyer1, Felicitas Beier1,2, Benjamin Leon Bodirsky1, Hans Joachim Schellnhuber1, Hermann Lotze-Campen1,2, and Alexander Popp1
1 Potsdam Institute for Climate Impact Research (PIK), Member of Leibniz Association, P.O.Box 60 12 03, 14412,6
Potsdam, Germany
2 Humboldt University of Berlin, Department of Agricultural Economics, Unter den Linden 6, 10099 Berlin,8
Germany
Abhijeet Mishra
*[email protected]
May 2022
See README.md for further details
MAgPIE model - Land use change and carbon emissions of a transformation to timber cities
No full textMAgPIE source code for reproducibility
Land use change and carbon emissions of a transformation to timber cities
(Nature Communications, 2022)
DOI: 10.1038/s41467-022-32244-w
Abhijeet Mishra1,2,*, Florian Humpenöder1, Galina Churkina1, Christopher P.O. Reyer1, Felicitas Beier1,2, Benjamin Leon Bodirsky1, Hans Joachim Schellnhuber1, Hermann Lotze-Campen1,2, and Alexander Popp1
1 Potsdam Institute for Climate Impact Research (PIK), Member of Leibniz Association, P.O.Box 60 12 03, 14412,6
Potsdam, Germany
2 Humboldt University of Berlin, Department of Agricultural Economics, Unter den Linden 6, 10099 Berlin,8
Germany
Abhijeet Mishra
*[email protected]
May 2022
See README.md for further details
An Overview of Marketing Communication Strategy: A Descriptive Study
No full textSanjay Shrivastava, Abhijeet Dawle, “An Overview Of Marketing Communication Strategy: A Descriptive Study”, International Journal of Current Research, ISSN: 0975-833X, Vol. 12, Issue no. 10, pp.14502 – 14504, October 2020
Mahesh Dattani: The Forerunner of Indian English Theatre’s Changing Dynamics
No full textShivaji Methe, Abhijeet Dawle, “Mahesh Dattani: The Forerunner of Indian English Theatre’s Changing Dynamics”, International Journal of Creative Research Thoughts, ISSN 2320-2882, Vol. 11, Issue no. 3, pp.b339 – b343, March 2023
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