Zobrazeno 1 - 10
of 1 390
pro vyhledávání: '"SAHA, Abhijit"'
Autor:
Boyd, Benjamin M., Narayan, Gautham, Mandel, Kaisey S., Grayling, Matthew, Berres, Aidan, Li, Mai, Do, Aaron, Saha, Abhijit, Axelrod, Tim, Matheson, Thomas, Olszewski, Edward W., Bohlin, Ralph C., Calamida, Annalisa, Holberg, Jay B., Hubeny, Ivan, Mackenty, John W., Rest, Armin, Sabbi, Elena, Stubbs, Christopher W.
We use hierarchical Bayesian modelling to calibrate a network of 32 all-sky faint DA white dwarf (DA WD) spectrophotometric standards ($16.5 < V < 19.5$) alongside the three CALSPEC standards, from 912 \r{A} to 32 $\mu$m. The framework is the first o
Externí odkaz:
http://arxiv.org/abs/2412.08809
Autor:
Bohlin, Ralph C., Deustua, Susana, Narayan, Gautham, Saha, Abhijit, Calamida, Annalisa, Gordon, Karl D., Holberg, Jay B., Hubeny, Ivan, Matheson, Thomas, Rest, Armin
Fainter standard stars are essential for the calibration of larger telescopes. This work adds to the CALSPEC (calibration spectra) database 19 faint white dwarfs (WDs) with all-sky coverage and V magnitudes between 16.5 and 18.7. Included for these s
Externí odkaz:
http://arxiv.org/abs/2411.09049
We analyse the impact of dark matter density spike around the Milky Way's supermassive black hole (SMBH), Sgr A$^*$, in probing the Bino-dominated neutralino dark matter (DM) $\tilde \chi_1^0$ within the MSSM, which typically produces relatively fain
Externí odkaz:
http://arxiv.org/abs/2407.14603
The present study aims to unveil a scenario with a non-minimal secluded dark sector (DS) in an effective field theory (EFT) framework. To explore this, we have examined a suitable extension of the type-X Two Higgs Doublet Model (2HDM) as a potential
Externí odkaz:
http://arxiv.org/abs/2312.17171
The minimal $U(1)_{L_\mu-L_\tau}$ gauge symmetry extended Standard Model (SM) is a well motivated framework that resolves the discrepancy between the theoretical prediction and experimental observation of muon anomalous magnetic moment. We envisage t
Externí odkaz:
http://arxiv.org/abs/2308.07855
Autor:
Mukherjee, Ananya, Saha, Abhijit Kumar
In a pure inverse seesaw framework, achieving a substantial lepton asymmetry that can be converted into the observed baryon asymmetry of the Universe is extremely challenging. The difficulty arises primarily due to two reasons, (i) partial cancellati
Externí odkaz:
http://arxiv.org/abs/2307.14405
Autor:
Nidever, David L., Olsen, Knut, Walker, Alistair R., Vivas, A. Katherina, Blum, Robert D., Kaleida, Catherine, Choi, Yumi, Conn, Blair C., Gruendl, Robert A., Bell, Eric F., Besla, Gurtina, Muñoz, Ricardo R., Gallart, Carme, Martin, Nicolas F., Olszewski, Edward W., Saha, Abhijit, Monachesi, Antonela, Monelli, Matteo, de Boer, Thomas J. L., Johnson, L. Clifton, Zaritsky, Dennis, Stringfellow, Guy S., van der Marel, Roeland P., Cioni, Maria-Rosa L., Jin, Shoko, Majewski, Steven R., Martinez-Delgado, David, Monteagudo, Lara, Noël, Noelia E. D., Bernard, Edouard J., Kunder, Andrea, Chu, You-Hua, Bell, Cameron P. M., Santana, Felipe, Frechem, Joshua, Medina, Gustavo E., Parkash, Vaishali, Navarrete, J. C. Serón, Hayes, Christian
The Large and Small Magellanic Clouds are unique local laboratories for studying the formation and evolution of small galaxies in exquisite detail. The Survey of the MAgellanic Stellar History (SMASH) is an NOAO community Dark Energy Camera (DECam) s
Externí odkaz:
http://hdl.handle.net/10150/626050
http://arizona.openrepository.com/arizona/handle/10150/626050
http://arizona.openrepository.com/arizona/handle/10150/626050
Autor:
Vivas, A. Katherina, Saha, Abhijit, Olsen, Knut, Blum, Robert, Olszewski, Edward W., Claver, Jennifer, Valdes, Francisco, Axelrod, Tim, Kaleida, Catherine, Kunder, Andrea, Narayan, Gautham, Matheson, Thomas, Walker, Alistair
We characterize the absolute magnitudes and colors of RR Lyrae stars in the globular cluster M5 in the ugriz filter system of the Dark Energy Camera (DECam). We provide empirical period-luminosity (P-L) relationships in all five bands based on 47 RR
Externí odkaz:
http://hdl.handle.net/10150/625820
http://arizona.openrepository.com/arizona/handle/10150/625820
http://arizona.openrepository.com/arizona/handle/10150/625820
Autor:
Dey, Arjun, Najita, Joan, Filion, Carrie, Han, Jiwon Jesse, Pearson, Sarah, Wyse, Rosemary, Thob, Adrien C. R., Anguiano, Borja, Apfel, Miranda, Arnaboldi, Magda, Bell, Eric F., Silva, Leandro Beraldo e, Besla, Gurtina, Bhattacharya, Aparajito, Bhattacharya, Souradeep, Chandra, Vedant, Choi, Yumi, Collins, Michelle L. M., Cunningham, Emily C., Dalcanton, Julianne J., Escala, Ivanna, Foote, Hayden R., Ferguson, Annette M. N., Gibson, Benjamin J., Gnedin, Oleg Y., Guhathakurta, Puragra, Hawkins, Keith, Horta, Danny, Ibata, Rodrigo, Kallivayalil, Nitya, Koch, Eric W., Koposov, Sergey, Lewis, Geraint F., Macri, Lucas, McKinnon, Kevin A., Nidever, David L., Olsen, Knut A. G., Patel, Ekta, Petersen, Michael S., Petric, Andreea, Price-Whelan, Adrian M., Rich, R. Michael, Riley, Alexander H., Saha, Abhijit, Sanderson, Robyn E., Sharma, Sanjib, Sohn, Sangmo Tony, Soraisam, Monika D., Steinmetz, Matthias, Valluri, Monica, Vivas, A. Katherina, Williams, Benjamin F., Wojno, J. Leigh
As our nearest large neighbor, the Andromeda Galaxy provides a unique laboratory for investigating galaxy formation and the distribution and substructure properties of dark matter in a Milky Way-like galaxy. Here, we propose an initial 2-epoch ($\Del
Externí odkaz:
http://arxiv.org/abs/2306.12302