Article
Astronomy & Astrophysics
Rongpu Zhou, Biprateep Dey, Jeffrey A. Newman, Daniel J. Eisenstein, K. Dawson, S. Bailey, A. Berti, J. Guy, Ting-Wen Lan, H. Zou, J. Aguilar, S. Ahlen, Shadab Alam, D. Brooks, A. de la Macorra, A. Dey, G. Dhungana, K. Fanning, A. Font-Ribera, S. Gontcho A. Gontcho, K. Honscheid, Mustapha Ishak, T. Kisner, A. Kovacs, A. Kremin, M. Landriau, Michael E. Levi, C. Magneville, Marc Manera, P. Martini, Aaron M. Meisner, R. Miquel, J. Moustakas, Adam D. Myers, Jundan Nie, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, F. Prada, A. Raichoor, A. J. Ross, E. Schlafly, D. Schlegel, M. Schubnell, Gregory Tarle, B. A. Weaver, R. H. Wechsler, Christophe Yeche, Zhimin Zhou
Summary: The Dark Energy Spectroscopic Instrument (DESI) is conducting a five-year survey to measure the redshifts of tens of millions of galaxies and quasars. The DESI LRG sample, selected using photometry data from the DESI Legacy Imaging Surveys, shows high robustness against imaging systematics. The sample has a higher density compared to previous surveys and has a high success rate in obtaining confident redshifts.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Adam D. Myers, John Moustakas, Stephen Bailey, Benjamin A. Weaver, Andrew P. Cooper, Jaime E. Forero-Romero, Bela Abolfathi, David M. Alexander, David Brooks, Edmond Chaussidon, Chia-Hsun Chuang, Kyle Dawson, Arjun Dey, Biprateep Dey, Govinda Dhungana, Peter Doel, Kevin Fanning, Enrique Gaztanaga, Satya Gontcho Gontcho, Alma X. Gonzalez-Morales, ChangHoon Hahn, Hiram K. Herrera-Alcantar, Klaus Honscheid, Mustapha Ishak, Tanveer Karim, David Kirkby, Theodore Kisner, Sergey E. Koposov, Anthony Kremin, Ting-Wen Lan, Martin Landriau, Dustin Lang, Michael E. Levi, Christophe Magneville, Lucas Napolitano, Paul Martini, Aaron Meisner, Jeffrey A. Newman, Nathalie Palanque-Delabrouille, Will Percival, Claire Poppett, Francisco Prada, Anand Raichoor, Ashley J. Ross, Edward F. Schlafly, David Schlegel, Michael Schubnell, Ting Tan, Gregory Tarle, Michael J. Wilson, Christophe Yeche, Rongpu Zhou, Zhimin Zhou, Hu Zou
Summary: In May 2021, the Dark Energy Spectroscopic Instrument (DESI) initiated a 5-year survey involving approximately 50 million extragalactic and Galactic targets. The primary targets of DESI include emission line galaxies, luminous red galaxies, and quasars. The survey is divided into dark-time targets and bright-time targets, with different targeting phases and identification systems. This paper provides an overview of the desitarget pipeline used for processing DESI targets, including the data model, structure, and access of DESI targeting files, as well as supporting target classes.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Joseph Harry Silber, Parker Fagrelius, Kevin Fanning, Michael Schubnell, Jessica Nicole Aguilar, Steven Ahlen, Jon Ameel, Otger Ballester, Charles Baltay, Chris Bebek, Dominic Benton Beard, Robert Besuner, Laia Cardiel-Sas, Ricard Casas, Francisco Javier Castander, Todd Claybaugh, Carl Dobson, Yutong Duan, Patrick Dunlop, Jerry Edelstein, William T. Emmet, Ann Elliott, Matthew Evatt, Irena Gershkovich, Julien Guy, Stu Harris, Henry Heetderks, Ian Heetderks, Klaus Honscheid, Jose Maria Illa, Patrick Jelinsky, Sharon R. Jelinsky, Jorge Jimenez, Armin Karcher, Stephen Kent, David Kirkby, Jean-Paul Kneib, Andrew Lambert, Mike Lampton, Daniela Leitner, Michael Levi, Jeremy McCauley, Aaron Meisner, Timothy N. Miller, Ramon Miquel, Julia Mundet, Claire Poppett, David Rabinowitz, Kevin Reil, David Roman, David Schlegel, Santiago Serrano, William Van Shourt, David Sprayberry, Gregory Tarle, Suk Sien Tie, Curtis Weaverdyck, Kai Zhang, Marco Azzaro, Stephen Bailey, Santiago Becerril, Tami Blackwell, Mohamed Bouri, David Brooks, Elizabeth Buckley-Geer, Jose Penate Castro, Mark Derwent, Arjun Dey, Govinda Dhungana, Peter Doel, Daniel J. Eisenstein, Nasib Fahim, Juan Garcia-Bellido, Enrique Gaztanaga, Satya Gontcho A. Gontcho, Gaston Gutierrez, Philipp Horler, Robert Kehoe, Theodore Kisner, Anthony Kremin, Luzius Kronig, Martin Landriau, Laurent Le Guillou, Paul Martini, John Moustakas, Nathalie Palanque-Delabrouille, Xiyan Peng, Will Percival, Francisco Prada, Carlos Allende Prieto, Guillermo Gonzalez de Rivera, Eusebio Sanchez, Justo Sanchez, Ray Sharples, Marcelle Soares-Santos, Edward Schlafly, Benjamin Alan Weaver, Zhimin Zhou, Yaling Zhu, Hu Zou
Summary: In 2019, a system of 5020 robotic fiber positioners was installed on the Mayall Telescope at Kitt Peak National Observatory. These robots automatically retarget their optical fibers every 10-20 minutes with high precision, enabling the Dark Energy Spectroscopic Instrument (DESI) to measure the spectra of 35 million galaxies and quasars. The system includes other components such as guide cameras, wave front cameras, fiducial point sources, and a metrology camera, and contains over 675,000 individual parts.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
M. Bonici, C. Carbone, S. Davini, P. Vielzeuf, L. Paganin, V. Cardone, N. Hamaus, A. Pisani, A. J. Hawken, A. Kovacs, S. Nadathur, S. Contarini, G. Verza, I. Tutusaus, F. Marulli, L. Moscardini, M. Aubert, C. Giocoli, A. Pourtsidou, S. Camera, S. Escoffier, A. Caminata, S. Di Domizio, M. Martinelli, M. Pallavicini, V. Pettorino, Z. Sakr, D. Sapone, G. Testera, S. Tosi, V. Yankelevich, A. Amara, N. Auricchio, M. Baldi, D. Bonino, E. Branchini, M. Brescia, J. Brinchmann, V. Capobianco, J. Carretero, M. Castellano, S. Cavuoti, R. Cledassou, G. Congedo, L. Conversi, Y. Copin, L. Corcione, F. Courbin, M. Cropper, A. Da Silva, H. Degaudenzi, M. Douspis, F. Dubath, C. A. J. Duncan, X. Dupac, S. Dusini, A. Ealet, S. Farrens, S. Ferriol, P. Fosalba, M. Frailis, E. Franceschi, M. Fumana, P. Gomez-Alvarez, B. Garilli, B. Gillis, A. Grazian, F. Grupp, L. Guzzo, S. V. H. Haugan, W. Holmes, F. Hormuth, A. Hornstrup, K. Jahnke, M. Kuemmel, S. Kermiche, A. Kiessling, M. Kilbinger, M. Kunz, H. Kurki-Suonio, R. Laureijs, S. Ligori, P. B. Lilje, I. Lloro, E. Maiorano, O. Mansutti, O. Marggraf, K. Markovic, R. Massey, E. Medinaceli, M. Melchior, M. Meneghetti, G. Meylan, M. Moresco, E. Munari, S. M. Niemi, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, W. J. Percival, S. Pires, G. Polenta, M. Poncet, L. Popa, F. Raison, R. Rebolo, A. Renzi, J. Rhodes, E. Rossetti, R. Saglia, B. Sartoris, M. Scodeggio, A. Secroun, G. Seidel, C. Sirignano, G. Sirri, L. Stanco, J. -L. Starck, C. Surace, P. Tallada-Crespi, D. Tavagnacco, A. N. Taylor, I. Tereno, R. Toledo-Moreo, F. Torradeflot, E. A. Valentijn, L. Valenziano, Y. Wang, J. Weller, G. Zamorani, J. Zoubian, S. Andreon
Summary: The Euclid space telescope will survey cosmic voids using galaxy samples and estimate its performance in utilizing photometric void clustering, galaxy weak lensing, and their cross-correlation. The study finds that the inclusion of the void-lensing cross-correlation signal enhances parameter constraints and improves the joint void clustering and galaxy lensing figure of merit. When combined with spectroscopic galaxy clustering, the study shows that the FoM increases significantly. The conclusion suggests that photometric void clustering and its cross-correlation with galaxy lensing should be utilized in the data analysis of the Euclid galaxy survey to improve its constraining power.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Ting-Wen Lan, R. Tojeiro, E. Armengaud, J. Xavier Prochaska, T. M. Davis, David M. Alexander, A. Raichoor, Rongpu Zhou, Christophe Yeche, C. Balland, S. BenZvi, A. Berti, R. Canning, A. Carr, H. Chittenden, S. Cole, M. -C. Cousinou, K. Dawson, Biprateep Dey, K. Douglass, A. Edge, S. Escoffier, A. Glanville, S. Gontcho Gontcho, J. Guy, C. Hahn, C. Howlett, Ho Seong Hwang, L. Jiang, A. Kovacs, M. Mezcua, S. Moore, S. Nadathur, M. Oh, D. Parkinson, A. Rocher, A. J. Ross, V. Ruhlmann-Kleider, C. G. Sabiu, K. Said, C. Saulder, D. Sierra-Porta, B. Weiner, J. Yu, P. Zarrouk, Y. Zhang, H. Zou, S. Ahlen, S. Bailey, D. Brooks, A. P. Cooper, A. de la Macorra, A. Dey, G. Dhungana, P. Doel, S. Eftekharzadeh, K. Fanning, A. Font-Ribera, L. Garrison, E. Gaztanaga, R. Kehoe, T. Kisner, A. Kremin, M. Landriau, L. Le Guillou, Michael E. Levi, C. Magneville, Aaron M. Meisner, R. Miquel, J. Moustakas, Adam D. Myers, Jeffrey A. Newman, J. D. Nie, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, F. Prada, M. Schubnell, Gregory Tarle, B. A. Weaver, K. Zhang, Zhimin Zhou
Summary: The Dark Energy Spectroscopic Instrument (DESI) Survey validated its survey design and target selections by obtaining spectroscopic measurements of approximately 2500 bright galaxies, 3500 luminous red galaxies (LRGs), and 10,000 emission-line galaxies (ELGs). The results show that the final survey design produces samples of bright galaxies, LRGs, and ELGs with purity greater than 99%. The precision of the redshift measurements is approximately 10 km/s for bright galaxies and ELGs and approximately 40 km/s for LRGs.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
J. Guy, S. Bailey, A. Kremin, Shadab Alam, D. M. Alexander, C. Allende Prieto, S. BenZvi, A. S. Bolton, D. Brooks, E. Chaussidon, A. P. Cooper, K. Dawson, A. de la Macorra, A. Dey, Biprateep Dey, G. Dhungana, D. J. Eisenstein, A. Font-Ribera, J. E. Forero-Romero, E. Gaztanaga, S. Gontcho A. Gontcho, D. Green, K. Honscheid, M. Ishak, R. Kehoe, D. Kirkby, T. Kisner, Sergey E. Koposov, Ting-Wen Lan, M. Landriau, L. Le Guillou, Michael E. Levi, C. Magneville, Christopher J. Manser, P. Martini, Aaron M. Meisner, R. Miquel, J. Moustakas, Adam D. Myers, Jeffrey A. Newman, Jundan Nie, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, F. Prada, A. Raichoor, C. Ravoux, A. J. Ross, E. F. Schlafly, D. Schlegel, M. Schubnell, Ray M. Sharples, Gregory Tarle, B. A. Weaver, Christophe Yeche, Rongpu Zhou, Zhimin Zhou, H. Zou
Summary: The Dark Energy Spectroscopic Instrument (DESI) is a purpose-built instrument on the 4 m Mayall Telescope at Kitt Peak National Observatory for conducting a redshift survey. With a spectroscopic data processing pipeline, DESI generates wavelength- and flux-calibrated spectra, spectroscopic classifications, and redshift measurements. The pipeline has exceeded the project's requirements for redshift performance, achieving a purity greater than 99% for all target classes.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
ChangHoon Hahn, Michael J. Wilson, Omar Ruiz-Macias, Shaun Cole, David H. Weinberg, John Moustakas, Anthony Kremin, Jeremy L. Tinker, Alex Smith, Risa H. Wechsler, Steven Ahlen, Shadab Alam, Stephen Bailey, David Brooks, Andrew P. Cooper, Tamara M. Davis, Kyle Dawson, Arjun Dey, Biprateep Dey, Sarah Eftekharzadeh, Daniel J. Eisenstein, Kevin Fanning, Jaime E. Forero-Romero, Carlos S. Frenk, Enrique Gaztanaga, Satya Gontcho Gontcho, Julien Guy, Klaus Honscheid, Mustapha Ishak, Stephanie Juneau, Robert Kehoe, Theodore Kisner, Ting-Wen Lan, Martin Landriau, Laurent Le Guillou, Michael E. Levi, Christophe Magneville, Paul Martini, Aaron Meisner, Adam D. Myers, Jundan Nie, Peder Norberg, Nathalie Palanque-Delabrouille, Will J. Percival, Claire Poppett, Francisco Prada, Anand Raichoor, Ashley J. Ross, Sasha Safonova, Christoph Saulder, Eddie Schlafly, David Schlegel, David Sierra-Porta, Gregory Tarle, Benjamin A. Weaver, Christophe Yeche, Pauline Zarrouk, Rongpu Zhou, Zhimin Zhou, Hu Zou
Summary: In the next 5 years, DESI will conduct the first Stage IV dark energy galaxy survey using 10 spectrographs with 5000 fibers on the 4 m Mayall Telescope. The DESI Bright Galaxy Survey will produce a detailed map of the universe during the dark-energy-dominated epoch, covering a large area with high redshifts. The final target selection and survey design for the BGS have been presented and validated.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
David M. Alexander, Tamara M. Davis, E. Chaussidon, V. A. Fawcett, Alma X. Gonzalez-Morales, Ting-Wen Lan, Christophe Yeche, S. Ahlen, J. N. Aguilar, E. Armengaud, S. Bailey, D. Brooks, Z. Cai, R. Canning, A. Carr, S. Chabanier, Marie-Claude Cousinou, K. Dawson, A. de la Macorra, A. Dey, Biprateep Dey, G. Dhungana, A. C. Edge, S. Eftekharzadeh, K. Fanning, James Farr, A. Font-Ribera, J. Garcia-Bellido, Lehman Garrison, E. Gaztanaga, Satya Gontcho Gontcho, C. Gordon, Stefany Guadalupe Medellin Gonzalez, J. Guy, Hiram K. Herrera-Alcantar, L. Jiang, S. Juneau, N. G. Karacayli, R. Kehoe, T. Kisner, A. Kovacs, M. Landriau, Michael E. Levi, C. Magneville, P. Martini, Aaron M. Meisner, M. Mezcua, R. Miquel, P. Montero Camacho, J. Moustakas, Andrea Munoz-Gutierrez, Adam D. Myers, S. Nadathur, L. Napolitano, J. D. Nie, N. Palanque-Delabrouille, Z. Pan, W. J. Percival, I. Perez-Rafols, C. Poppett, F. Prada, Cesar Ramirez-Perez, C. Ravoux, D. J. Rosario, M. Schubnell, Gregory Tarle, M. Walther, B. Weiner, S. Youles, Zhimin Zhou, H. Zou, Siwei Zou
Summary: A detailed visual inspection of the optical spectroscopic data is crucial for the Dark Energy Spectroscopic Instrument (DESI) survey validation. This paper presents the results of the quasar survey using deep coadded SV spectra, showing that the majority of the main-survey targets are confirmed as quasars. A modified pipeline is introduced to increase the quasar yield by recovering misidentified quasars. Both the standard and modified pipelines achieve high redshift purity and demonstrate good redshift precision and accuracy.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
A. Raichoor, J. Moustakas, Jeffrey A. Newman, T. Karim, S. Ahlen, Shadab Alam, S. Bailey, D. Brooks, K. Dawson, A. de la Macorra, A. de Mattia, A. Dey, Biprateep Dey, G. Dhungana, S. Eftekharzadeh, D. J. Eisenstein, K. Fanning, A. Font-Ribera, J. Garcia-Bellido, E. Gaztanaga, S. Gontcho A. Gontcho, J. Guy, K. Honscheid, M. Ishak, R. Kehoe, T. Kisner, Anthony Kremin, Ting-Wen Lan, M. Landriau, L. Le Guillou, Michael E. Levi, C. Magneville, M. Manera, P. Martini, Aaron M. Meisner, Adam D. Myers, Jundan Nie, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, F. Prada, A. J. Ross, V. Ruhlmann-Kleider, C. G. Sabiu, E. F. Schlafly, D. Schlegel, Gregory Tarle, B. A. Weaver, Christophe Yeche, Rongpu Zhou, Zhimin Zhou, H. Zou
Summary: The Dark Energy Spectroscopic Instrument (DESI) will collect approximately 40 million extragalactic redshifts to precisely constrain cosmic expansion and the growth of structure. It will cover about 80% of cosmic history and one-third of the sky. The Emission Line galaxy (ELG) sample, which comprises one-third of all DESI tracers, will be used to probe the universe within the 0.6 < z < 1.6 range, with the tightest constraints expected in the 1.1 < z < 1.6 range. The target selection for the DESI Survey Validation (SV) and Main Survey ELG samples relies on imaging from the Legacy Surveys.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Edmond Chaussidon, Christophe Yeche, Nathalie Palanque-Delabrouille, David M. Alexander, Jinyi Yang, Steven Ahlen, Stephen Bailey, David Brooks, Zheng Cai, Solene Chabanier, Tamara M. Davis, Kyle Dawson, Axel de la Macorra, Arjun Dey, Biprateep Dey, Sarah Eftekharzadeh, Daniel J. Eisenstein, Kevin Fanning, Andreu Font-Ribera, Enrique Gaztanaga, Satya Gontcho A. Gontcho, Alma X. Gonzalez-Morales, Julien Guy, Hiram K. Herrera-Alcantar, Klaus Honscheid, Mustapha Ishak, Linhua Jiang, Stephanie Juneau, Robert Kehoe, Theodore Kisner, Andras Kovacs, Anthony Kremin, Ting-Wen Lan, Martin Landriau, Laurent Le Guillou, Michael E. Levi, Christophe Magneville, Paul Martini, Aaron M. Meisner, John Moustakas, Andrea Munoz-Gutierrez, Adam D. Myers, Jeffrey A. Newman, Jundan Nie, Will J. Percival, Claire Poppett, Francisco Prada, Anand Raichoor, Corentin Ravoux, Ashley J. Ross, Edward Schlafly, David Schlegel, Ting Tan, Gregory Tarle, Rongpu Zhou, Zhimin Zhou, Hu Zou
Summary: The DESI survey will measure large-scale structures using quasars as direct tracers of dark matter in the redshift range 0.9 < z < 2.1 and using Ly alpha forests in quasar spectra at z > 2.1. Various methods for selecting candidate quasars for DESI were tested and the final selection was optimized based on a random forest algorithm. The selected quasars show excellent agreement with quasar luminosity function predictions.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Andrew P. Cooper, Sergey E. Koposov, Carlos Allende Prieto, Christopher J. Manser, Namitha Kizhuprakkat, Adam D. Myers, Arjun Dey, Boris T. Gansicke, Ting S. Li, Constance Rockosi, Monica Valluri, Joan Najita, Alis Deason, Anand Raichoor, M. -Y. Wang, Y. -S. Ting, Bokyoung Kim, Andreia Carrillo, Wenting Wang, Leandro Beraldo e Silva, Jiwon Jesse Han, Jiani Ding, Miguel Sanchez-Conde, Jessica N. Aguilar, Steven Ahlen, Stephen Bailey, Vasily Belokurov, David Brooks, Katia Cunha, Kyle Dawson, Axel de la Macorra, Peter Doel, Daniel J. Eisenstein, Parker Fagrelius, Kevin Fanning, Andreu Font-Ribera, Jaime E. Forero-Romero, Enrique Gaztanaga, Satya Gontcho A. Gontcho, Julien Guy, Klaus Honscheid, Robert Kehoe, Theodore Kisner, Anthony Kremin, Martin Landriau, Michael E. Levi, Paul Martini, Aaron M. Meisner, Ramon Miquel, John Moustakas, Jundan J. D. Nie, Nathalie Palanque-Delabrouille, Will J. Percival, Claire Poppett, Francisco Prada, Nabeel Rehemtulla, Edward Schlafly, David Schlegel, Michael Schubnell, Ray M. Sharples, Gregory Tarle, Risa H. Wechsler, David H. Weinberg, Zhimin Zhou, Hu Zou
Summary: We describe the Milky Way Survey (MWS), which will be conducted with the Dark Energy Spectroscopic Instrument (DESI), aiming to observe approximately seven million stars and investigate the Galactic structure and stellar evolution. The MWS target selection scheme focuses on the thick disk and stellar halo, including rare stellar types such as white dwarfs, low-mass stars near the Sun, and horizontal branch stars. Our pipelines for deriving radial velocities, atmospheric parameters, and chemical abundances are validated using the DESI Survey Validation program (SV) data, showing good agreement with expectations from mock catalogs and previous surveys.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Naonori S. Sugiyama, Daisuke Yamauchi, Tsutomu Kobayashi, Tomohiro Fujita, Shun Arai, Shin'ichi Hirano, Shun Saito, Florian Beutler, Hee-Jong Seo
Summary: We conducted a joint analysis of galaxy two- and three-point correlation functions to test modified gravity theories and constrain non-linear effects on cosmological scales. Applying this analysis to BOSS data, we obtained lower bounds on the parameters characterizing the time evolution of the second-order velocity field, which are consistent with GR predictions. The results showed significant improvement compared to the analysis using only the isotropic three-point correlation function.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Alice M. Eltvedt, T. Shanks, N. Metcalfe, B. Ansarinejad, L. F. Barrientos, R. Sharp, U. Malik, D. N. A. Murphy, M. Irwin, M. Wilson, D. M. Alexander, Andras Kovacs, Juan Garcia-Bellido, Steven Ahlen, David Brooks, Axel de la Macorra, Andreu Font-Ribera, Satya Gontcho a Gontcho, Klaus Honscheid, Aaron Meisner, Ramon Miquel, Jundan Nie, Gregory Tarle, Mariana Vargas-Magana, Zhimin Zhou
Summary: We present the VST ATLAS Quasar Survey, which includes over 1,229,000 quasar (QSO) candidates with 16 < g < 22.5 over an area of approximately 4,700 square degrees. The survey aims to reach a QSO sky density of 130 deg-2 for z < 2.2 and about 30 deg-2 for z > 2.2. The selection of candidates is guided by X-ray/UV/optical/MIR data in the William Herschel Deep Field (WHDF) and we find that about 25% of the QSOs are morphologically classified as optically extended. In terms of completeness and contamination, MIR, UV, and X-ray selections are 70-90% complete, with X-ray suffering less contamination than MIR and UV.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Naonori S. Sugiyama, Daisuke Yamauchi, Tsutomu Kobayashi, Tomohiro Fujita, Shun Arai, Shin'ichi Hirano, Shun Saito, Florian Beutler, Hee-Jong Seo
Summary: For the first time, we have conducted an observational test of the consistency relation for the large-scale structure (LSS) of the Universe by jointly analyzing the anisotropic two-and three-point correlation functions (2PCF and 3PCF) of galaxies. Using the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 12, we found no violation of the LSS consistency relation in our analysis within the statistical errors. Our analysis opens up a new observational window to test fundamental physics using anisotropic higher-order correlation functions of galaxy clustering.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Cesar A. Zen Vasconcellos, Jose Rodrigo Sacahui Reyes, Peter O. Hess, Gabriella Piccinelli, Mariana Vargas Magana, Ricardo Gonzalez Felipe, Thomas Boller, Steven Gullberg, Dimiter Hadjimichef
Summary: This article outlines our experience in organizing the 10th edition of the International Workshop on Astronomy and Relativistic Astrophysics: from Quarks to Cosmos, IWARA2022, in a hybrid format combining virtual and face-to-face sessions. The meeting took place from 05 to 09 September, 2022, in Antigua, Guatemala.
ASTRONOMISCHE NACHRICHTEN
(2023)