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Black Hole

Lensing of space time around a black hole. At Oxford we study black holes observationally and theoretically on all size and time scales - it is some of our core work.

Credit: ALAIN RIAZUELO, IAP/UPMC/CNRS. CLICK HERE TO VIEW MORE IMAGES.

Dr Aprajita Verma

Senior Research Fellow

Research theme

  • Astronomy and astrophysics

Sub department

  • Astrophysics

Research groups

  • Zooniverse
  • Astronomical instrumentation
  • Galaxy formation and evolution
  • Rubin-LSST
  • Extremely Large Telescope
aprajita.verma@physics.ox.ac.uk
Telephone: 01865 (2)73374
Denys Wilkinson Building, room 760
  • About
  • Outreach
  • Teaching
  • Publications

ANDES, the high resolution spectrograph for the ELT: science goals, project overview, and future developments

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 13096 (2024) 1309613-1309613-26

Authors:

A Marconi, M Abreu, V Adibekyan, V Alberti, S Albrecht, J Alcaniz, M Aliverti, C Allende Prieto, JD Alvarado-Gomez, CS Alves, PJ Amado, M Amate, MI Andersen, S Antoniucci, E Artigau, C Bailet, C Baker, V Baldini, A Balestra, SA Barnes, F Baron, SCC Barros, SM Bauer, M Beaulieu, O Bellido-Tirado, B Benneke, T Bensby, EA Bergin, P Berio, K Biazzo, L Bigot, A Bik, JL Birkby, N Blind, O Boebion, I Boisse, E Bolmont, JS Bolton, M Bonaglia, X Bonfils, L Bonhomme, F Borsa, J-C Bouret, A Brandeker, W Brandner, CH Broeg, M Brogi, D Brousseau, A Brucalassi, J Brynnel, LA Buchhave, DF Buscher, L Cabona, A Cabral, G Calderone, R Calvo-Ortega, F Cantalloube, BL Canto Martins, L Carbonaro, Y Caujolle, G Chauvin, B Chazelas, A-L Cheffot, YS Cheng, A Chiavassa, L Christensen, R Cirami, M Cirasuolo, NJ Cook, RJ Cooke, I Coretti, S Covino, N Cowan, G Cresci, S Cristiani, V Cunha Parro, G Cupani, V D'Odorico, K Dadi, I de Castro Leão, A De, JR De Medeiros, F Debras, M Debus, A Delorme, O Demangeon, F Derie, M Dessauges-Zavadsky, P Di Marcantonio, S Di Stefano, F Dionies, A Domiciano de Souza, R Doyon, J Dunn, S Egner, D Ehrenreich, JP Faria, D Ferruzzi, C Feruglio, M Fisher, A Fontana, BS Frank, C Fuesslein, M Fumagalli, T Fusco, J Fynbo, O Gabella, W Gaessler, E Gallo, X Gao, L Genolet, M Genoni, P Giacobbe, E Giro, RS Gonçalves, OA Gonzalez, JI González-Hernández, C Gouvret, F Gracia Témich, MG Haehnelt, C Haniff, A Hatzes, R Helled, HJ Hoeijmakers, I Hughes, P Huke, Y Ivanisenko, AS Järvinen, SP Järvinen, A Kaminski, J Kern, J Knoche, A Kordt, H Korhonen, AJ Korn, D Kouach, G Kowzan, L Kreidberg, M Landoni, AA Lanotte, A Lavail, B Lavie, D Lee, M Lehmitz, J Li, W Li, J Liske, C Lovis, S Lucatello, D Lunney, MJ MacIntosh, N Madhusudhan, L Magrini, R Maiolino, J Maldonado, L Malo, AWS Man, T Marquart, CMJ Marques, EL Marques, P Martinez, A Martins, CJAP Martins, JHC Martins, P Maslowski, C Mason, E Mason, RA McCracken, MAF Melo E Sousa, P Mergo, G Micela, D Milaković, P Mollière, MA Monteiro, D Montgomery, C Mordasini, J Morin, A Mucciarelli, MT Murphy, M N'Diaye, N Nardetto, B Neichel, N Neri, AT Niedzielski, E Niemczura, B Nisini, L Nortmann, P Noterdaeme, NJ Nunes, L Oggioni, F Olchewsky, E Oliva, H Önel, L Origlia, G Östlin, NN-Q Ouellette, E Pallé, P Papaderos, G Pariani, L Pasquini, J Peñate Castro, F Pepe, C Peroux, L Perreault Levasseur, S Perruchot, P Petit, O Pfuhl, L Pino, J Piqueras, N Piskunov, A Pollo, K Poppenhaeger, M Porru, J Puschnig, A Quirrenbach, E Rauscher, R Rebolo, EMA Redaelli, S Reffert, DT Reid, A Reiners, P Richter, M Riva, S Rivoire, C Rodríguez-López, IU Roederer, D Romano, M Roth, S Rousseau, J Rowe, A Saccardi, S Salvadori, N Sanna, NC Santos, P Santos Diaz, J Sanz-Forcada, M Sarajlic, J-F Sauvage, D Savio, A Scaudo, S Schäfer, RP Schiavon, TM Schmidt, C Selmi, R Simoes, A Simonnin, S Sivanandam, M Sordet, R Sordo, F Sortino, D Sosnowska, SG Sousa, A Spang, R Spiga, E Stempels, JRY Stevenson, KG Strassmeier, A Suárez Mascareño, A Sulich, X Sun, NR Tanvir, F Tenegi-Sanginés, S Thibault, SJ Thompson, P Tisserand, A Tozzi, M Turbet, J-P Véran, P Vallée, I Vanni, R Varas, A Vega-Moreno, KA Venn, A Verma, J Vernet, M Viel, G Wade, C Waring, M Weber, J Weder, B Wehbé, J Weingrill, M Woche, M Xompero, E Zackrisson, A Zanutta, MR Zapatero Osorio, M Zechmeister, J Zimara
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Euclid. I. Overview of the Euclid mission

(2024)

Authors:

Euclid Collaboration, Y Mellier, Abdurro'uf, JA Acevedo Barroso, A Achúcarro, J Adamek, R Adam, GE Addison, N Aghanim, M Aguena, V Ajani, Y Akrami, A Al-Bahlawan, A Alavi, IS Albuquerque, G Alestas, G Alguero, A Allaoui, SW Allen, V Allevato, AV Alonso-Tetilla, B Altieri, A Alvarez-Candal, S Alvi, A Amara, L Amendola, J Amiaux, IT Andika, S Andreon, A Andrews, G Angora, RE Angulo, F Annibali, A Anselmi, S Anselmi, S Arcari, M Archidiacono, G Aricò, M Arnaud, S Arnouts, M Asgari, J Asorey, L Atayde, H Atek, F Atrio-Barandela, M Aubert, E Aubourg, T Auphan, N Auricchio, B Aussel, H Aussel, PP Avelino, A Avgoustidis, S Avila, S Awan, R Azzollini, C Baccigalupi, E Bachelet, D Bacon, M Baes, MB Bagley, B Bahr-Kalus, A Balaguera-Antolinez, E Balbinot, M Balcells, M Baldi, I Baldry, A Balestra, M Ballardini, O Ballester, M Balogh, E Bañados, R Barbier, S Bardelli, M Baron, T Barreiro, R Barrena, J-C Barriere, BJ Barros, A Barthelemy, N Bartolo, A Basset, P Battaglia, AJ Battisti, CM Baugh, L Baumont, L Bazzanini, J-P Beaulieu, V Beckmann, AN Belikov, J Bel, F Bellagamba, M Bella, E Bellini, K Benabed, R Bender, G Benevento, CL Bennett, K Benson, P Bergamini, JR Bermejo-Climent, F Bernardeau, D Bertacca, M Berthe, J Berthier, M Bethermin, F Beutler, C Bevillon, S Bhargava, R Bhatawdekar, D Bianchi, L Bisigello, A Biviano, RP Blake, A Blanchard, J Blazek, L Blot, A Bosco, C Bodendorf, T Boenke, H Böhringer, P Boldrini, M Bolzonella, A Bonchi, M Bonici, D Bonino, L Bonino, C Bonvin, W Bon, JT Booth, S Borgani, AS Borlaff, E Borsato, A Bosco, B Bose, MT Botticella, A Boucaud, F Bouche, JS Boucher, D Boutigny, T Bouvard, R Bouwens, H Bouy, RAA Bowler, V Bozza, E Bozzo, E Branchini, G Brando, S Brau-Nogue, P Brekke, MN Bremer, M Brescia, M-A Breton, J Brinchmann, T Brinckmann, C Brockley-Blatt, M Brodwin, L Brouard, ML Brown, S Bruton, J Bucko, H Buddelmeijer, G Buenadicha, F Buitrago, P Burger, C Burigana, V Busillo, D Busonero, R Cabanac, L Cabayol-Garcia, MS Cagliari, A Caillat, L Caillat, M Calabrese, A Calabro, G Calderone, F Calura, B Camacho Quevedo, S Camera, L Campos, G Canas-Herrera, GP Candini, M Cantiello, V Capobianco, E Cappellaro, N Cappelluti, A Cappi, KI Caputi, C Cara, C Carbone, VF Cardone, E Carella, RG Carlberg, M Carle, L Carminati, F Caro, JM Carrasco, J Carretero, P Carrilho, J Carron Duque, B Carry, A Carvalho, CS Carvalho, R Casas, S Casas, P Casenove, CM Casey, P Cassata, FJ Castander, D Castelao, M Castellano, L Castiblanco, G Castignani, T Castro, C Cavet, S Cavuoti, P-Y Chabaud, KC Chambers, Y Charles, S Charlot, N Chartab, R Chary, F Chaumeil, H Cho, G Chon, E Ciancetta, P Ciliegi, A Cimatti, M Cimino, M-RL Cioni, R Claydon, C Cleland, B Clément, DL Clements, N Clerc, S Clesse, S Codis, F Cogato, J Colbert, RE Cole, P Coles, TE Collett, RS Collins, C Colodro-Conde, C Colombo, F Combes, V Conforti, G Congedo, S Conseil, CJ Conselice, S Contarini, T Contini, L Conversi, AR Cooray, Y Copin, P-S Corasaniti, P Corcho-Caballero, L Corcione, O Cordes, O Corpace, M Correnti, M Costanzi, A Costille, F Courbin, L Courcoult Mifsud, HM Courtois, M-C Cousinou, G Covone, T Cowell, C Cragg, G Cresci, S Cristiani, M Crocce, M Cropper, PE Crouzet, B Csizi, J-G Cuby, E Cucchetti, O Cucciati, J-C Cuillandre, PAC Cunha, V Cuozzo, E Daddi, M D'Addona, C Dafonte, N Dagoneau, E Dalessandro, GB Dalton, G D'Amico, H Dannerbauer, P Danto, I Das, A Da Silva, R da Silva, W d'Assignies Doumerg, G Daste, JE Davies, S Davini, P Dayal, T de Boer, R Decarli, B De Caro, H Degaudenzi, G Degni, JTA de Jong, LF de la Bella, S de la Torre, F Delhaise, D Delley, G Delucchi, G De Lucia, J Denniston, F De Paolis, M De Petris, A Derosa, S Desai, V Desjacques, G Despali, G Desprez, J De Vicente-Albendea, Y Deville, JDF Dias, A Díaz-Sánchez, JJ Diaz, S Di Domizio, JM Diego, D Di Ferdinando, AM Di Giorgio, P Dimauro, J Dinis, K Dolag, C Dolding, H Dole, H Domínguez Sánchez, O Doré, F Dournac, M Douspis, H Dreihahn, B Droge, B Dryer, F Dubath, P-A Duc, F Ducret, C Duffy, F Dufresne, CAJ Duncan, X Dupac, V Duret, R Durrer, F Durret, S Dusini, A Ealet, A Eggemeier, PRM Eisenhardt, D Elbaz, MY Elkhashab, A Ellien, J Endicott, A Enia, T Erben, JA Escartin Vigo, S Escoffier, I Escudero Sanz, J Essert, S Ettori, M Ezziati, G Fabbian, M Fabricius, Y Fang, A Farina, M Farina, R Farinelli, S Farrens, F Faustini, A Feltre, AMN Ferguson, P Ferrando, AG Ferrari, A Ferré-Mateu, PG Ferreira, I Ferreras, I Ferrero, S Ferriol, P Ferruit, D Filleul, F Finelli, SL Finkelstein, A Finoguenov, B Fiorini, F Flentge, P Focardi, J Fonseca, A Fontana, F Fontanot, F Fornari, P Fosalba, M Fossati, S Fotopoulou, D Fouchez, N Fourmanoit, M Frailis, D Fraix-Burnet, E Franceschi, A Franco, P Franzetti, J Freihoefer, CS Frenk, G Frittoli, P-A Frugier, N Frusciante, A Fumagalli, M Fumagalli, M Fumana, Y Fu, L Gabarra, S Galeotta, L Galluccio, K Ganga, H Gao, J García-Bellido, K Garcia, JP Gardner, B Garilli, L-M Gaspar-Venancio, T Gasparetto, V Gautard, R Gavazzi, E Gaztanaga, L Genolet, R Genova Santos, F Gentile, K George, M Gerbino, Z Ghaffari, F Giacomini, F Gianotti, GPS Gibb, W Gillard, B Gillis, M Ginolfi, C Giocoli, M Girardi, SK Giri, LWK Goh, P Gómez-Alvarez, V Gonzalez-Perez, AH Gonzalez, EJ Gonzalez, JC Gonzalez, S Gouyou Beauchamps, G Gozaliasl, J Gracia-Carpio, S Grandis, BR Granett, M Granvik, A Grazian, A Gregorio, C Grenet, C Grillo, F Grupp, C Gruppioni, A Gruppuso, C Guerbuez, S Guerrini, M Guidi, P Guillard, CM Gutierrez, P Guttridge, L Guzzo, S Gwyn, J Haapala, J Haase, CR Haddow, M Hailey, A Hall, D Hall, N Hamaus, BS Haridasu, J Harnois-Déraps, C Harper, WG Hartley, G Hasinger, F Hassani, NA Hatch, SVH Haugan, B Häußler, A Heavens, L Heisenberg, A Helmi, G Helou, S Hemmati, K Henares, O Herent, C Hernández-Monteagudo, T Heuberger, PC Hewett, S Heydenreich, H Hildebrandt, M Hirschmann, J Hjorth, J Hoar, H Hoekstra, AD Holland, MS Holliman, W Holmes, I Hook, B Horeau, F Hormuth, A Hornstrup, S Hosseini, D Hu, P Hudelot, MJ Hudson, M Huertas-Company, EM Huff, ACN Hughes, A Humphrey, LK Hunt, DD Huynh, R Ibata, K Ichikawa, S Iglesias-Groth, O Ilbert, S Ilić, L Ingoglia, E Iodice, H Israel, UE Israelsson, L Izzo, P Jablonka, N Jackson, J Jacobson, M Jafariyazani, K Jahnke, B Jain, H Jansen, MJ Jarvis, J Jasche, M Jauzac, N Jeffrey, M Jhabvala, Y Jimenez-Teja, A Jimenez Muñoz, B Joachimi, PH Johansson, S Joudaki, E Jullo, JJE Kajava, Y Kang, A Kannawadi, V Kansal, D Karagiannis, M Kärcher, A Kashlinsky, MV Kazandjian, F Keck, E Keihänen, E Kerins, S Kermiche, A Khalil, A Kiessling, K Kiiveri, M Kilbinger, J Kim, R King, CC Kirkpatrick, T Kitching, M Kluge, M Knabenhans, JH Knapen, A Knebe, J-P Kneib, R Kohley, LVE Koopmans, H Koskinen, E Koulouridis, R Kou, A Kovács, I Kovačić, A Kowalczyk, K Koyama, K Kraljic, O Krause, S Kruk, B Kubik, U Kuchner, K Kuijken, M Kümmel, M Kunz, H Kurki-Suonio, F Lacasa, CG Lacey, F La Franca, N Lagarde, O Lahav, C Laigle, A La Marca, O La Marle, B Lamine, MC Lam, A Lançon, H Landt, M Langer, A Lapi, C Larcheveque, SS Larsen, M Lattanzi, F Laudisio, D Laugier, R Laureijs, V Laurent, G Lavaux, A Lawrenson, A Lazanu, T Lazeyras, Q Le Boulc'h, AMC Le Brun, V Le Brun, F Leclercq, S Lee, J Le Graet, L Legrand, KN Leirvik, M Le Jeune, M Lembo, D Le Mignant, MD Lepinzan, F Lepori, A Le Reun, G Leroy, GF Lesci, J Lesgourgues, L Leuzzi, ME Levi, TI Liaudat, G Libet, P Liebing, S Ligori, PB Lilje, C-C Lin, D Linde, E Linder, V Lindholm, L Linke, S-S Li, SJ Liu, I Lloro, FSN Lobo, N Lodieu, M Lombardi, L Lombriser, P Lonare, G Longo, M López-Caniego, X Lopez Lopez, J Lorenzo Alvarez, A Loureiro, J Loveday, E Lusso, J Macias-Perez, T Maciaszek, G Maggio, M Magliocchetti, F Magnard, EA Magnier, A Magro, G Mahler, G Mainetti, D Maino, E Maiorano, E Maiorano, N Malavasi, GA Mamon, C Mancini, R Mandelbaum, M Manera, A Manjón-García, F Mannucci, O Mansutti, M Manteiga Outeiro, R Maoli, C Maraston, S Marcin, P Marcos-Arenal, B Margalef-Bentabol, O Marggraf, D Marinucci, M Marinucci, K Markovic, FR Marleau, J Marpaud, J Martignac, J Martín-Fleitas, P Martin-Moruno, EL Martin, M Martinelli, N Martinet, H Martin, CJAP Martins, F Marulli, D Massari, R Massey, DC Masters, S Matarrese, Y Matsuoka, S Matthew, BJ Maughan, N Mauri, L Maurin, S Maurogordato, K McCarthy, AW McConnachie, HJ McCracken, I McDonald, JD McEwen, CJR McPartland, E Medinaceli, V Mehta, S Mei, M Melchior, J-B Melin, B Ménard, J Mendes, J Mendez-Abreu, M Meneghetti, A Mercurio, E Merlin, RB Metcalf, G Meylan, M Migliaccio, M Mignoli, L Miller, M Miluzio, B Milvang-Jensen, JP Mimoso, R Miquel, H Miyatake, B Mobasher, JJ Mohr, P Monaco, M Monguió, A Montoro, A Mora, A Moradinezhad Dizgah, M Moresco, C Moretti, G Morgante, N Morisset, TJ Moriya, PW Morris, DJ Mortlock, L Moscardini, DF Mota, S Mottet, LA Moustakas, T Moutard, T Müller, E Munari, G Murphree, C Murray, N Murray, P Musi, S Nadathur, BC Nagam, T Nagao, K Naidoo, R Nakajima, C Nally, P Natoli, A Navarro-Alsina, D Navarro Girones, C Neissner, A Nersesian, S Nesseris, HN Nguyen-Kim, L Nicastro, RC Nichol, M Nielbock, S-M Niemi, S Nieto, K Nilsson, J Noller, P Norberg, A Nouri-Zonoz, P Ntelis, AA Nucita, P Nugent, NJ Nunes, T Nutma, I Ocampo, J Odier, PA Oesch, M Oguri, D Magalhaes Oliveira, M Onoue, T Oosterbroek, F Oppizzi, C Ordenovic, K Osato, F Pacaud, F Pace, C Padilla, K Paech, L Pagano, MJ Page, E Palazzi, S Paltani, S Pamuk, S Pandolfi, D Paoletti, M Paolillo, P Papaderos, K Pardede, G Parimbelli, A Parmar, C Partmann, F Pasian, F Passalacqua, K Paterson, L Patrizii, C Pattison, A Paulino-Afonso, R Paviot, JA Peacock, FR Pearce, K Pedersen, A Peel, RF Peletier, M Pellejero Ibanez, R Pello, MT Penny, WJ Percival, A Perez-Garrido, L Perotto, V Pettorino, A Pezzotta, S Pezzuto, A Philippon, M Pierre, O Piersanti, M Pietroni, L Piga, L Pilo, S Pires, A Pisani, A Pizzella, L Pizzuti, C Plana, G Polenta, JE Pollack, M Poncet, M Pöntinen, P Pool, LA Popa, V Popa, J Popp, C Porciani, L Porth, D Potter, M Poulain, A Pourtsidou, L Pozzetti, I Prandoni, GW Pratt, S Prezelus, E Prieto, A Pugno, S Quai, L Quilley, GD Racca, A Raccanelli, G Rácz, S Radinović, M Radovich, A Ragagnin, U Ragnit, F Raison, N Ramos-Chernenko, C Ranc, Y Rasera, N Raylet, R Rebolo, A Refregier, P Reimberg, TH Reiprich, F Renk, A Renzi, J Retre, Y Revaz, C Reylé, L Reynolds, J Rhodes, F Ricci, M Ricci, G Riccio, SO Ricken, S Rissanen, I Risso, H-W Rix, AC Robin, B Rocca-Volmerange, P-F Rocci, M Rodenhuis, G Rodighiero, M Rodriguez Monroy, RP Rollins, M Romanello, J Roman, E Romelli, M Romero-Gomez, M Roncarelli, P Rosati, C Rosset, E Rossetti, W Roster, HJA Rottgering, A Rozas-Fernández, K Ruane, JA Rubino-Martin, A Rudolph, F Ruppin, B Rusholme, S Sacquegna, I Sáez-Casares, S Saga, R Saglia, M Sahlén, T Saifollahi, Z Sakr, J Salvalaggio, R Salvaterra, L Salvati, M Salvato, J-C Salvignol, AG Sánchez, E Sanchez, DB Sanders, D Sapone, M Saponara, E Sarpa, F Sarron, S Sartori, B Sartoris, B Sassolas, L Sauniere, M Sauvage, M Sawicki, R Scaramella, C Scarlata, L Scharré, J Schaye, JA Schewtschenko, J-T Schindler, E Schinnerer, M Schirmer, F Schmidt, F Schmidt, M Schmidt, A Schneider, M Schneider, P Schneider, N Schöneberg, T Schrabback, M Schultheis, S Schulz, N Schuster, J Schwartz, D Sciotti, M Scodeggio, D Scognamiglio, D Scott, V Scottez, A Secroun, E Sefusatti, G Seidel, M Seiffert, E Sellentin, M Selwood, E Semboloni, M Sereno, S Serjeant, S Serrano, G Setnikar, F Shankar, RM Sharples, A Short, A Shulevski, M Shuntov, M Sias, G Sikkema, A Silvestri, P Simon, C Sirignano, G Sirri, J Skottfelt, E Slezak, D Sluse, GP Smith, LC Smith, RE Smith, SJA Smit, F Soldano, BGB Solheim, JG Sorce, F Sorrenti, E Soubrie, L Spinoglio, A Spurio Mancini, J Stadel, L Stagnaro, L Stanco, SA Stanford, J-L Starck, P Stassi, J Steinwagner, D Stern, C Stone, P Strada, F Strafella, D Stramaccioni, C Surace, F Sureau, SH Suyu, I Swindells, M Szafraniec, I Szapudi, S Taamoli, M Talia, P Tallada-Crespí, K Tanidis, C Tao, P Tarrío, D Tavagnacco, AN Taylor, JE Taylor, PL Taylor, EM Teixeira, M Tenti, P Teodoro Idiago, HI Teplitz, I Tereno, N Tessore, V Testa, G Testera, M Tewes, R Teyssier, N Theret, C Thizy, PD Thomas, Y Toba, S Toft, R Toledo-Moreo, E Tolstoy, E Tommasi, O Torbaniuk, F Torradeflot, C Tortora, S Tosi, S Tosti, M Trifoglio, A Troja, T Trombetti, A Tronconi, M Tsedrik, A Tsyganov, M Tucci, I Tutusaus, C Uhlemann, L Ulivi, M Urbano, L Vacher, L Vaillon, P Valageas, I Valdes, EA Valentijn, L Valenziano, C Valieri, J Valiviita, M Van den Broeck, T Vassallo, R Vavrek, J Vega-Ferrero, B Venemans, A Venhola, S Ventura, G Verdoes Kleijn, D Vergani, A Verma, F Vernizzi, A Veropalumbo, G Verza, C Vescovi, D Vibert, M Viel, P Vielzeuf, C Viglione, A Viitanen, F Villaescusa-Navarro, S Vinciguerra, F Visticot, K Voggel, M von Wietersheim-Kramsta, WJ Vriend, S Wachter, M Walmsley, G Walth, DM Walton, NA Walton, M Wander, L Wang, Y Wang, JR Weaver, J Weller, M Wetzstein, DJ Whalen, IH Whittam, A Widmer, M Wiesmann, J Wilde, OR Williams, H-A Winther, A Wittje, JHW Wong, AH Wright, V Yankelevich, HW Yeung, M Yoon, S Youles, LYA Yung, A Zacchei, L Zalesky, G Zamorani, A Zamorano Vitorelli, M Zanoni Marc, M Zennaro, FM Zerbi, IA Zinchenko, J Zoubian, E Zucca, M Zumalacarregui
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Anti-Black Racism Workshop during the Vera C. Rubin Observatory Virtual 2021 Project and Community Workshop

Chapter in An Astronomical Inclusion Revolution, IOP Publishing (2024) 7-1-7-12

Authors:

Andrés A Plazas Malagón, Federica Bianco, Ranpal Gill, Robert D Blum, Rosaria Sara Bonito, Wil O’Mullane, Alsyha Shugart, Rachel Street, Aprajita Verma
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A Bayesian approach to strong lens finding in the era of wide-area surveys

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 530:2 (2024) 1297-1310

Authors:

Philip Holloway, Philip J Marshall, Aprajita Verma, Anupreeta More, Raoul Cañameras, Anton T Jaelani, Yuichiro Ishida, Kenneth C Wong

Abstract:

The arrival of the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST), Euclid-Wide and Roman wide-area sensitive surveys will herald a new era in strong lens science in which the number of strong lenses known is expected to rise from to. However, current lens-finding methods still require time-consuming follow-up visual inspection by strong lens experts to remove false positives which is only set to increase with these surveys. In this work, we demonstrate a range of methods to produce calibrated probabilities to help determine the veracity of any given lens candidate. To do this we use the classifications from citizen science and multiple neural networks for galaxies selected from the Hyper Suprime-Cam survey. Our methodology is not restricted to particular classifier types and could be applied to any strong lens classifier which produces quantitative scores. Using these calibrated probabilities, we generate an ensemble classifier, combining citizen science, and neural network lens finders. We find such an ensemble can provide improved classification over the individual classifiers. We find a false-positive rate of 10-3 can be achieved with a completeness of 46 per cent, compared to 34 per cent for the best individual classifier. Given the large number of galaxy-galaxy strong lenses anticipated in LSST, such improvement would still produce significant numbers of false positives, in which case using calibrated probabilities will be essential for population analysis of large populations of lenses and to help prioritize candidates for follow-up.
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The JWST Hubble Sequence: The Rest-frame Optical Evolution of Galaxy Structure at 1.5 < z < 6.5

The Astrophysical Journal American Astronomical Society 955:2 (2023) 94

Authors:

Leonardo Ferreira, Christopher J Conselice, Elizaveta Sazonova, Fabricio Ferrari, Joseph Caruana, Clár-Bríd Tohill, Geferson Lucatelli, Nathan Adams, Dimitrios Irodotou, Madeline A Marshall, Will J Roper, Christopher C Lovell, Aprajita Verma, Duncan Austin, James Trussler, Stephen M Wilkins
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