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URI: http://hdl.handle.net/2144/1176

The Department of Astronomy guides students at the undergraduate and graduate levels toward the advanced mathematical skills and physical insight they need to understand the nature of the universe from the modern scientific perspective. The department offers three undergraduate concentrations: astronomy, astronomy and physics, and planetary and space sciences. It offers an MA for students interested in careers in scientific applications, scientific computing, and related fields, and a PhD for students interested in research and academic careers in astrophysics and space physics. The department has two outstanding affiliated research centers, the Center for Space Physics and the Institute for Astrophysical Research.

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Department chair: Tereasa Brainerd
Campus address: 725 Commonwealth Avenue, Room 514
Phone: 617-353-2625
Fax: 617-353-5704
Website: www.bu.edu/astronomy/

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  • Multiwavelength variability and correlation studies of Mrk 421 during historically low X-ray and γ-ray activity in 2015–2016 

    Acciari, V.A.; Ansoldi, S.; Antonelli, L.A.; Asano, K.; Babić, A.; Banerjee, B.; Baquero, A.; de Almeida, U. Barres; Barrio, J.A.; González, J. Becerra; Bednarek, W.; Bellizzi, L.; Bernardini, E.; Bernardos, M.; Berti, A.; Besenrieder, J.; Bhattacharyya, W.; Bigongiari, C.; Blanch, O.; Bonnoli, G.; Bošnjak, Ž.; Busetto, G.; Carosi, R.; Ceribella, G.; Cerruti, M.; Chai, Y.; Chilingarian, A.; Cikota, S.; Colak, S.M.; Colombo, E.; Contreras, J.L.; Cortina, J.; Covino, S.; D’Amico, G.; D’Elia, V.; Da Vela, P.; Dazzi, F.; De Angelis, A.; De Lotto, B.; Delfino, M.; Delgado, J.; Mendez, C. Delgado; Depaoli, D.; Girolamo, T. Di; Pierro, F. Di; Venere, L. Di; Espi neira, E. Do Souto; Prester, D. Dominis; Donini, A.; Doro, M.; Ramazani, V. Fallah; Fattorini, A.; Ferrara, G.; Foffano, L.; Fonseca, M.V.; Font, L.; Fruck, C.; Fukami, S.; López, R.J. García; Garczarczyk, M.; Gasparyan, S.; Gaug, M.; Giglietto, N.; Giordano, F.; Gliwny, P.; Godinović, N.; Green, J.G.; Green, D.; Hadasch, D.; Hahn, A.; Heckmann, L.; Herrera, J.; Hoang, J.; Hrupec, D.; Hütten, M.; Inada, T.; Inoue, S.; Ishio, K.; Iwamura, Y.; Jormanainen, J.; Jouvin, L.; Kajiwara, Y.; Karjalainen, M.; Kerszberg, D.; Kobayashi, Y.; Kubo, H.; Kushida, J.; Lamastra, A.; Lelas, D.; Leone, F.; Lindfors, E.; Lombardi, S.; Longo, F.; López, M.; López-Coto, R.; López-Oramas, A.; Loporchio, S.; Fraga, B. Machado de Oliveira; Maggio, C.; Majumdar, P.; Makariev, M.; Mallamaci, M.; Maneva, G.; Manganaro, M.; Maraschi, L.; Mariotti, M.; Martínez, M.; Mazin, D.; Mender, S.; Mićanović, S.; Miceli, D.; Miener, T.; Minev, M.; Miranda, J.M.; Mirzoyan, R.; Molina, E.; Moralejo, A.; Morcuende, D.; Moreno, V.; Moretti, E.; Munar-Adrover, P.; Neustroev, V.; Nigro, C.; Nilsson, K.; Ninci, D.; Nishijima, K.; Noda, K.; Nozaki, S.; Ohtani, Y.; Oka, T.; Otero-Santos, J.; Palatiello, M.; Paneque, D.; Paoletti, R.; Paredes, J.M.; Pavletić, L.; Penil, P.; Perennes, C.; Persic, M.; Moroni, P.G .Prada; Prandini, E.; Priyadarshi, C.; Puljak, I.; Rhode, W.; Ribó, M.; Rico, J.; Righi, C.; Rugliancich, A.; Saha, L.; Sahakyan, N.; Saito, T.; Sakurai, S.; Satalecka, K.; Schleicher, B.; Schmidt, K.; Schweizer, T.; Sitarek, J.; Šnidarić, I.; Sobczynska, D.; Spolon, A.; Stamerra, A.; Strom, D.; Strzys, M.; Suda, Y.; Surić, T.; Takahashi, M.; Tavecchio, F.; Temnikov, P.; Terzić, T.; Teshima, M.; Torres-Albà, N.; Tosti, L.; Truzzi, S.; van Scherpenberg, J.; Vanzo, G.; Acosta, M. Vazquez; Ventura, S.; Verguilov, V.; Vigorito, C.F.; Vitale, V.; Vovk, I.; Will, M.; Zarić, D.; Arbet-Engels, A.; Baack, D.; Balbo, M.; Beck, M.; Biederbeck, N.; Biland, A.; Bretz, T.; Bruegge, K.; Buss, J.; Dorner, D.; Elsaesser, D.; Hildebrand, D.; Iotov, R.; Klinger, M.; Mannheim, K.; Neise, D.; Neronov, A.; Noethe, M.; Paravac, A.; Rhode, W.; Schleicher, B.; Sliusar, V.; Theissen, F.; Walter, R.; Valverde, J.; Horan, D.; Giroletti, M.; Perri, M.; Verrecchia, F.; Leto, C.; Sadun, A.C.; Moody, J.W.; Joner, M.; Marscher, Alan P.; Jorstad, S.G.; Lähteenmäki, A.; Tornikoski, M.; Ramakrishnan, V.; Järvelä, E.; Vera, R.J.C.; Righini, S.; Lien, A.Y. (Oxford University Press (OUP), 2020-12-03)
    We report a characterization of the multi-band flux variability and correlations of the nearby (z=0.031) blazar Markarian 421 (Mrk 421) using data from Metsähovi, Swift, Fermi-LAT, MAGIC, FACT and other collaborations and ...
  • Observation of a sudden cessation of a very-high-energy gamma-ray flare in PKS 1510-089 with H.E.S.S. and MAGIC in May 2016 

    Collaboration, H.E.S.S.; Abdalla, H.; Adam, R.; Aharonian, F.; Benkhali, F. Ait; Angüner, E.O.; Arcaro, C.; Arm, C.; Armstrong, T.; Ashkar, H.; Backes, M.; Baghmanyan, V.; Martins, V. Barbosa; Barnacka, A.; Barnard, M.; Becherini, Y.; Berge, D.; Bernlöhr, K.; Bi, B.; Böttcher, M.; Boisson, C.; Bolmont, J.; Bonnefoy, S.; Lavergne, M. de Bony de; Bregeon, J.; Breuhaus, M.; Brun, F.; Brun, P.; Bryan, M.; Büchele, M.; Bulik, T.; Bylund, T.; Caroff, S.; Carosi, A.; Casanova, S.; Ch, T.; Ch, S.; Chen, A.; Cotter, G.; Curyło, M.; Mbarubucyeye, J. Damascene; Davids, I.D.; Davies, J.; Deil, C.; Devin, J.; deWilt, P.; Dirson, L.; Djannati-Ataï, A.; Dmytriiev, A.; Donath, A.; Doroshenko, V.; Dyks, J.; Egberts, K.; Eichhorn, F.; Einecke, S.; Emery, G.; Ernenwein, J.-P.; Feijen, K.; Fegan, S.; Fiasson, A.; Clairfontaine, G. Fichet de; Filipovic, M.; Fontaine, G.; Funk, S.; Füßling, M.; Gabici, S.; Gallant, Y.A.; Giavitto, G.; Giunti, L.; Glawion, D.; Glicenstein, J.F.; Gottschall, D.; Grondin, M.-H.; Hahn, J.; Haupt, M.; Hermann, G.; Hinton, J.A.; Hofmann, W.; Hoischen, C.; Holch, T.L.; Holler, M.; Hörbe, M.; Horns, D.; Huber, D.; Jamrozy, M.; Jankowsky, D.; Jankowsky, F.; Jardin-Blicq, A.; Joshi, V.; Jung-Richardt, I.; Kastendieck, M.A.; Katarzyński, K.; Katz, U.; Khangulyan, D.; Khélifi, B.; Klepser, S.; Kluźniak, W.; Komin, Nu; Konno, R.; Kosack, K.; Kostunin, D.; Kreter, M.; Lamanna, G.; Lemière, A.; Lemoine-Goumard, M.; Lenain, J.-P.; Levy, C.; Lohse, T.; Lypova, I.; Mackey, J.; Majumdar, J.; Malyshev, D.; Malyshev, D.; Mar, V.; Marchegiani, P.; Marcowith, A.; Mares, A.; Martí-Devesa, G.; Marx, R.; Maurin, G.; Meintjes, P.J.; Meyer, M.; Mitchell, A.M.W.; Moderski, R.; Mohamed, M.; Mohrmann, L.; Montanari, A.; Moore, C.; Morris, P.; Moulin, E.; Muller, J.; Murach, T.; Nakashima, K.; Nayerhoda, A.; Naurois, M. de; Ndiyavala, H.; Niederwanger, F.; Niemiec, J.; Oakes, L.; O'Brien, P.; Odaka, H.; Ohm, S.; Olivera-Nieto, L.; Wilhelmi, E. de Ona; Ostrowski, M.; Panter, M.; Panny, S.; Parsons, R.D.; Peron, G.; Peyaud, B.; Piel, Q.; Pita, S.; Poireau, V.; Noel, A Priyana; Prokhorov, D.A.; Prokoph, H.; Pühlhofer, G.; Punch, M.; Quirrenbach, A.; Raab, S.; Rauth, R.; Reichherzer, P.; Reimer, A.; Reimer, O.; Remy, Q.; Renaud, M.; Rieger, F.; Rinchiuso, L.; Romoli, C.; Rowell, G.; Rudak, B.; Ruiz-Velasco, E.; Sahakian, V.; Sailer, S.; Sanchez, D.A.; Santangelo, A.; Sasaki, M.; Scalici, M.; Schüssler, F.; Schutte, H.M.; Schwanke, U.; Schwemmer, S.; Seglar-Arroyo, M.; Senniappan, M.; Seyffert, A.S.; Shafi, N.; Shiningayamwe, K.; Simoni, R.; Sinha, A.; Sol, H.; Specovius, A.; Spencer, S.; Spir-Jacob, M.; Stawarz, Ł.; Sun, L.; Steenkamp, R.; Stegmann, C.; Steinmassl, S.; Steppa, C.; Takahashi, T.; Tavernier, T.; Taylor, A.M.; Terrier, R.; Tiziani, D.; Tluczykont, M.; Tomankova, L.; Trichard, C.; Tsirou, M.; Tuffs, R.; Uchiyama, Y.; Walt, D.J. van der; Eldik, C. van; Rensburg, C. van; Soelen, B. van; Vasileiadis, G.; Veh, J.; Venter, C.; Vincent, P.; Vink, J.; Völk, H.J.; Vuillaume, T.; Wadiasingh, Z.; Wagner, S.J.; Watson, J.; Werner, F.; White, R.; Wierzcholska, A.; Wong, Yu Wun; Yusafzai, A.; Zacharias, M.; Zanin, R.; Zargaryan, D.; Zdziarski, A.A.; Zech, A.; Zhu, S.J.; Zorn, J.; Zouari, S.; Żywucka, N.; Collaboration, MAGIC; Acciari, V.A.; Ansoldi, S.; Antonelli, L.A.; Engels, A. Arbet; Asano, K.; Baack, D.; Babić, A.; Baquero, A.; Almeida, U. Barres de; Barrio, J.A.; González, J. Becerra; Bednarek, W.; Bellizzi, L.; Bernardini, E.; Berti, A.; Besenrieder, J.; Bhattacharyya, W.; Bigongiari, C.; Bil, A.; Blanch, O.; Bonnoli, G.; Bošnjak, Ž.; Busetto, G.; Carosi, R.; Ceribella, G.; Cerruti, M.; Chai, Y.; Chilingarian, A.; Cikota, S.; Colak, S.M.; Colin, U.; Colombo, E.; Contreras, J.L.; Cortina, J.; Covino, S.; D'Amico, G.; D'Elia, V.; Vela, P. Da; Dazzi, F.; Angelis, A. De; Lotto, B. De; Delfino, M.; Delgado, J.; Depaoli, D.; Pierro, F. Di; Venere, L. Di; Neira, E. Do Souto Espi; Prester, D. Dominis; Donini, A.; Dorner, D.; Doro, M.; Elsaesser, D.; Ramazani, V. Fallah; Fattorini, A.; Ferrara, G.; Foffano, L.; Fonseca, M.V.; Font, L.; Fruck, C.; Fukami, S.; López, R.J. García; Garczarczyk, M.; Gasparyan, S.; Gaug, M.; Giglietto, N.; Giordano, F.; Gliwny, P.; Godinović, N.; Green, D.; Hadasch, D.; Hahn, A.; Heckmann, L.; Herrera, J.; Hoang, J.; Hrupec, D.; Hütten, M.; Inada, T.; Inoue, S.; Ishio, K.; Iwamura, Y.; Jouvin, L.; Kajiwara, Y.; Karjalainen, M.; Kerszberg, D.; Kobayashi, Y.; Kubo, H.; Kushida, J.; Lamastra, A.; Lelas, D.; Leone, F.; Lindfors, E.; Lombardi, S.; Longo, F.; López, M.; López-Coto, R.; López-Oramas, A.; Loporchio, S..; Fraga, B Machado de Oliveira; Maggio, C.; Majumdar, P.; Makariev, M.; Mallamaci, M.; Maneva, G.; Manganaro, M.; Mannheim, K.; Maraschi, L.; Mariotti, M.; Martínez, M.; Mazin, D.; Mender, S.; Mićanović, S.; Miceli, D.; Miener, T.; Minev, M.; Mir, J.M.; Mirzoyan, R.; Molina, E.; Moralejo, A.; Morcuende, D.; Moreno, V.; Moretti, E.; Munar-Adrover, P.; Neustroev, V.; Nigro, C.; Nilsson, K.; Ninci, D.; Nishijima, K.; Noda, K.; Nozaki, S.; Ohtani, Y.; Oka, T.; Otero-Santos, J.; Palatiello, M.; Paneque, D.; Paoletti, R.; Paredes, J.M.; Pavletić, L.; Nil, P. Pe; Perennes, C.; Persic, M.; Moroni, P.G. Prada; Pr, E.; Priyadarshi, C.; Puljak, I.; Rhode, W.; Ribó, M.; Rico, J.; Righi, C.; Rugliancich, A.; Saha, L.; Sahakyan, N.; Saito, T.; Sakurai, S.; Satalecka, K.; Schleicher, B.; Schmidt, K.; Schweizer, T.; Sitarek, J.; Šnidarić, I.; Sobczynska, D.; Spolon, A.; Stamerra, A.; Strom, D.; Strzys, M.; Suda, Y.; Surić, T.; Takahashi, M.; Tavecchio, F.; Temnikov, P.; Terzić, T.; Teshima, M; Torres-Albà, N.; Tosti, L.; Truzzi, S.; Scherpenberg, J. van; Vanzo, G.; Acosta, M. Vazquez; Ventura, S.; Verguilov, V.; Vigorito, C.F.; Vitale, V.; Vovk, I.; Will, M.; Zarić, D.; Jorstad, S.G.; Marscher, Alan P.; Boccardi, B.; Casadio, C.; Hodgson, J.; Kim, J.-Y.; Krichbaum, T.P.; Lähteenmäki, A.; Tornikoski, M.; Traianou, E.; Weaver, Z.R.
    The flat spectrum radio quasar (FSRQ) PKS 1510-089 is known for its complex multiwavelength behavior, and is one of only a few FSRQs detected at very high energy (VHE, E >100 GeV) 𝛾-rays. VHE 𝛾-ray observations with ...
  • VHE gamma-ray detection of FSRQ QSO B1420+326 and modeling of its enhanced broadband state in 2020 

    Acciari, V.A.; Ansoldi, S.; Antonelli, L.A.; Engels, A. Arbet; Artero, M.; Asano, K.; Baack, D.; Babić, A.; Baquero, A.; Almeida, U. Barres de; Barrio, J.A.; González, J. Becerra; Bednarek, W.; Bellizzi, L.; Bernardini, E.; Bernardos, M.; Berti, A.; Besenrieder, J.; Bhattacharyya, W.; Bigongiari, C.; Biland, A.; Blanch, O.; Bonnoli, G.; Bošnjak, Ž.; Busetto, G.; Carosi, R.; Ceribella, G.; Cerruti, M.; Chai, Y.; Chilingarian, A.; Cikota, S.; Colak, S.M.; Colombo, E.; Contreras, J.L.; Cortina, J.; Covino, S.; D'Amico, G.; D'Elia, V.; Vela, P. Da; Dazzi, F.; Angelis, A. De; Lotto, B. De; Delfino, M.; Delgado, J.; Mendez, C. Delgado; Depaoli, D.; Pierro, F. Di; Venere, L. Di; Espiñeira, E. Do Souto; Prester, D. Dominis; Donini, A.; Dorner, D.; Doro, M.; Elsaesser, D.; Ramazani, V. Fallah; Fattorini, A.; Ferrara, G.; Foffano, L.; Fonseca, M.V.; Font, L.; Fruck, C.; Fukami, S.; López, R.J. García; Garczarczyk, M.; Gasparyan, S.; Gaug, M.; Giglietto, N.; Giordano, F.; Gliwny, P.; Godinović, N.; Green, J.G.; Green, D.; Hadasch, D.; Hahn, A.; Heckmann, L.; Herrera, J.; Hoang, J.; Hrupec, D.; Hütten, M.; Inada, T.; Inoue, S.; Ishio, K.; Iwamura, Y.; Jormanainen, J.; Jouvin, L.; Kajiwara, Y.; Karjalainen, M.; Kerszberg, D.; Kobayashi, Y.; Kubo, H.; Kushida, J.; Lamastra, A.; Lelas, D.; Leone, F.; Lindfors, E.; Lombardi, S.; Longo, F.; López-Coto, R.; López-Moya, M.; López-Oramas, A.; Loporchio, S.; Fraga, B. Machado de Oliveira; Maggio, C.; Majumdar, P.; Makariev, M.; Mallamaci, M.; Maneva, G.; Manganaro, M.; Mannheim, K.; Maraschi, L.; Mariotti, M.; Martínez, M.; Mazin, D.; Mender, S.; Mićanović, S.; Miceli, D.; Miener, T.; Minev, M.; Miranda, J.M.; Mirzoyan, R.; Molina, E.; Moralejo, A.; Morcuende, D.; Moreno, V.; Moretti, E.; Neustroev, V.; Nigro, C.; Nilsson, K.; Ninci, D.; Nishijima, K.; Noda, K.; Nozaki, S.; Ohtani, Y.; Oka, T.; Otero-Santos, J.; Paiano, S.; Palatiello, M.; Paneque, D.; Paoletti, R.; Paredes, J.M.; Pavletić, L.; Peñil, P.; Perennes, C.; Persic, M.; Moroni, P.G. Prada; Prandini, E.; Priyadarshi, C.; Puljak, I.; Rhode, W.; Ribó, M.; Rico, J.; Righi, C.; Rugliancich, A.; Saha, L.; Sahakyan, N.; Saito, T.; Sakurai, S.; Satalecka, K.; Saturni, F.G.; Schleicher, B.; Schmidt, K.; Schweizer, T.; Sitarek, J.; Šnidarić, I.; Sobczynska, D.; Spolon, A.; Stamerra, A.; Strom, D.; Strzys, M.; Suda, Y.; Surić, T.; Takahashi, M.; Tavecchio, F.; Temnikov, P.; Terzić, T.; Teshima, M.; Torres-Albà, N..; Tosti, L.; Truzzi, S.; Tutone, A.; Scherpenberg, J. van; Vanzo, G.; Acosta, M. Vazquez; Ventura, S.; Verguilov, V.; Vigorito, C.F.; Vitale, V.; Vovk, I.; Will, M.; Zarić, D.; Angioni, R.; D'Ammando, F.; Ciprini, S.; Cheung, C.C.; Orienti, M.; Pacciani, L.; Prajapati, P.; Kumar, P.; Ganesh, S.; Minev, M.; Kurtenkov, A.; Marchini, A.; Carrasco, L.; Escobedo, G.; Porras, A.; Recillas, E.; Lähteenmäki, A.; Tornikoski, M.; Berton, M.; Tammi, J.; Vera, R.J.C.; Jorstad, S.G.; Marscher, Alan P.; Weaver, Z.R.; Hart, M.; Hallum, M.K.; Larionov, V.M.; Borman, G.A.; Grishina, T.S.; Kopatskaya, E.N.; Larionova, E.G.; Nikiforova, A.A.; Morozova, D.A.; Savchenko, S.S.; Troitskaya, Yu V.; Troitsky, I.S.; Vasilyev, A.A.; Hodges, M.; Hovatta, T.; Kiehlmann, S.; Max-Moerbeck, W.; Readhead, A.C.S.; Reeves, R.; Pearson, T.J. (2021)
    CONTEXT: QSO B1420+326 is a blazar classified as a Flat Spectrum Radio Quasar (FSRQ). In the beginning of 2020 it underwent an enhanced flux state. An extensive multiwavelength campaign allowed us to trace the evolution ...
  • Gravitational test beyond the first post-Newtonian order with the shadow of the M87 black hole 

    Psaltis, Dimitrios; Medeiros, Lia; Christian, Pierre; Özel, Feryal; Akiyama, Kazunori; Alberdi, Antxon; Alef, Walter; Asada, Keiichi; Azulay, Rebecca; Ball, David; Baloković, Mislav; Barrett, John; Bintley, Dan; Blackburn, Lindy; Boland, Wilfred; Bower, Geoffrey C.; Bremer, Michael; Brinkerink, Christiaan D.; Brissenden, Roger; Britzen, Silke; Broguiere, Dominique; Bronzwaer, Thomas; Byun, Do-Young; Carlstrom, John E.; Chael, Andrew; Chan, Chi-Kwan; Chatterjee, Shami; Chatterjee, Koushik; Chen, Ming-Tang; Chen, Yongjun; Cho, Ilje; Conway, John E.; Cordes, James M.; Crew, Geoffrey B.; Cui, Yuzhu; Davelaar, Jordy; De Laurentis, Mariafelicia; Deane, Roger; Dempsey, Jessica; Desvignes, Gregory; Dexter, Jason; Eatough, Ralph P.; Falcke, Heino; Fish, Vincent L.; Fomalont, Ed; Fraga-Encinas, Raquel; Friberg, Per; Fromm, Christian M.; Gammie, Charles F.; García, Roberto; Gentaz, Olivier; Goddi, Ciriaco; Gómez, José L.; Gu, Minfeng; Gurwell, Mark; Hada, Kazuhiro; Hesper, Ronald; Ho, Luis C.; Ho, Paul; Honma, Mareki; Huang, Chih-Wei L.; Huang, Lei; Hughes, David H.; Inoue, Makoto; Issaoun, Sara; James, David J.; Jannuzi, Buell T.; Janssen, Michael; Jiang, Wu; Jimenez-Rosales, Alejandra; Johnson, Michael D.; Jorstad, Svetlana; Jung, Taehyun; Karami, Mansour; Karuppusamy, Ramesh; Kawashima, Tomohisa; Keating, Garrett K.; Kettenis, Mark; Kim, Jae-Young; Kim, Junhan; Kim, Jongsoo; Kino, Motoki; Koay, Jun Yi; Koch, Patrick M.; Koyama, Shoko; Kramer, Michael; Kramer, Carsten; Krichbaum, Thomas P.; Kuo, Cheng-Yu; Lauer, Tod R.; Lee, Sang-Sung; Li, Yan-Rong; Li, Zhiyuan; Lindqvist, Michael; Lico, Rocco; Liu, Jun; Liu, Kuo; Liuzzo, Elisabetta; Lo, Wen-Ping; Lobanov, Andrei P.; Lonsdale, Colin; Lu, Ru-Sen; Mao, Jirong; Markoff, Sera; Marrone, Daniel P.; Marscher, Alan P.; Martí-Vidal, Iván; Matsushita, Satoki; Mizuno, Yosuke; Mizuno, Izumi; Moran, James M.; Moriyama, Kotaro; Moscibrodzka, Monika; Müller, Cornelia; Musoke, Gibwa; Mus Mejías, Alejandro; Nagai, Hiroshi; Nagar, Neil M.; Narayan, Ramesh; Narayanan, Gopal; Natarajan, Iniyan; Neri, Roberto; Noutsos, Aristeidis; Okino, Hiroki; Olivares, Héctor; Oyama, Tomoaki; Palumbo, Daniel C.M.; Park, Jongho; Patel, Nimesh; Pen, Ue-Li; Piétu, Vincent; Plambeck, Richard; PopStefanija, Aleksandar; Prather, Ben; Preciado-López, Jorge A.; Ramakrishnan, Venkatessh; Rao, Ramprasad; Rawlings, Mark G.; Raymond, Alexander W.; Ripperda, Bart; Roelofs, Freek; Rogers, Alan; Ros, Eduardo; Rose, Mel; Roshanineshat, Arash; Rottmann, Helge; Roy, Alan L.; Ruszczyk, Chet; Ryan, Benjamin R.; Rygl, Kazi L.J.; Sánchez, Salvador; Sánchez-Arguelles, David; Sasada, Mahito; Savolainen, Tuomas; Schloerb, F. Peter; Schuster, Karl-Friedrich; Shao, Lijing; Shen, Zhiqiang; Small, Des; Sohn, Bong Won; SooHoo, Jason; Tazaki, Fumie; Tilanus, Remo P.J.; Titus, Michael; Torne, Pablo; Trent, Tyler; Traianou, Efthalia; Trippe, Sascha; van Bemmel, Ilse; van Langevelde, Huib Jan; van Rossum, Daniel R.; Wagner, Jan; Wardle, John; Ward-Thompson, Derek; Weintroub, Jonathan; Wex, Norbert; Wharton, Robert; Wielgus, Maciek; Wong, George N.; Wu, Qingwen; Yoon, Doosoo; Young, André; Young, Ken; Younsi, Ziri; Yuan, Feng; Yuan, Ye-Fei; Zhao, Shan-Shan; EHT Collaboration (2020-10-02)
    The 2017 Event Horizon Telescope (EHT) observations of the central source in M87 have led to the first measurement of the size of a black-hole shadow. This observation offers a new and clean gravitational test of the ...
  • The ELFIN mission 

    Angelopoulos, V.; Tsai, E.; Bingley, L.; Shaffer, C.; Turner, D.L.; Runov, A.; Li, Wen; Liu, J.; Artemyev, A.V.; Zhang, X.-J.; Strangeway, R.J.; Wirz, R.E.; Shprits, Y.Y.; Sergeev, V.A.; Caron, R.P.; Chung, M.; Cruce, P.; Greer, W.; Grimes, E.; Hector, K.; Lawson, M.J.; Leneman, D.; Masongsong, E.V.; Russell, C.L.; Wilkins, C.; Hinkley, D.; Blake, J.B.; Adair, N.; Allen, M.; Anderson, M.; Arreola-Zamora, M.; Artinger, J.; Asher, J.; Branchevsky, D.; Capitelli, M.R.; Castro, R.; Chao, G.; Chung, N.; Cliffe, M.; Colton, K.; Costello, C.; Depe, D.; Domae, B.W.; Eldin, S.; Fitzgibbon, L.; Flemming, A.; Fox, I.; Frederick, D.M.; Gilbert, A.; Gildemeister, A.; Gonzalez, A.; Hesford, B.; Jha, S.; Kang, N.; King, J.; Krieger, R.; Lian, K.; Mao, J.; McKinney, E.; Miller, J.P.; Norris, A.; Nuesca, M.; Palla, A.; Park, E.S.Y.; Pedersen, C.E.; Qu, Z.; Rozario, R.; Rye, E.; Seaton, R.; Subramanian, A.; Sundin, S.R.; Tan, A.; Turner, W.; Villegas, A.J.; Wasden, M.; Wing, G.; Wong, C.; Xie, E.; Yamamoto, S.; Yap, R.; Zarifian, A.; Zhang, G.Y. (2020)
    The Electron Loss and Fields Investigation with a Spatio-Temporal Ambiguity-Resolving option (ELFIN-STAR, or heretoforth simply: ELFIN) mission comprises two identical 3-Unit (3U) CubeSats on a polar (∼93∘ inclination), ...
  • Interplay of source/seed electrons and wave-particle interactions in producing relativistic electron PSD enhancements in the outer Van Allen belt 

    Nasi, A.; Daglis, I.A.; Katsavrias, C.; Li, Wen (Elsevier BV, 2020-11)
    We perform a superposed epoch analysis on two groups of selected geospace disturbance events, emerging from single and isolated interplanetary drivers, and resulting in either the enhancement or the depletion of the average ...
  • Nonlinear interactions between radiation belt electrons and chorus waves: dependence on wave amplitude modulation 

    Gan, Longzhi; Li, Wen; Ma, Qianli; Albert, Jay; Artemyev, Anton; Bortnik, Jacob (2020-02-06)
    We use test particle simulations to model the interaction between radiation belt electrons and whistler mode chorus waves by focusing on wave amplitude modulations. We quantify the pitch angle and energy changes due to ...
  • Upper limits on planet occurrence around ultracool dwarfs with K2 

    Sagear, Sheila; Skinner Manegold, Julie; Muirhead, Philip (American Astronomical Society, 2020-06-12)
    The occurrence of planets orbiting ultracool dwarfs is poorly constrained. We present results from a guest observer program on NASA's K2 spacecraft to search for transiting planets orbiting a sample of 827 ultracool dwarfs. ...
  • The Solar-wind with Hydrogen Ion Exchange and Large-scale Dynamics (SHIELD) model: a self-consistent kinetic-MHD model of the outer heliosphere 

    Michael, Adam; Opher, Merav; Toth, Gabor; Tenishev, V.; Borovikov, D. (2020-04)
    Neutral hydrogen has been shown to greatly impact the plasma flow in the heliopshere and the location of the heliospheric boundaries. We present the re- sults of the Solar-wind with Hydrogen Ion Exchange and Large-scale ...
  • Dynamic auroral storms on Saturn as observed by the Hubble Space Telescope 

    Nichols, J.D.; Badman, S.V.; Baines, K.H.; Brown, R.H.; Bunce, E.J.; Clarke, J.T.; Cowley, S.W.H.; Crary, F.J.; Dougherty, M.K.; Gerard, J.-C.; Grocott, A.; Grodent, D.; Kurth, W.S.; Melin, H.; Mitchell, D.G.; Pryor, W.R.; Stallard, T.S. (AMER GEOPHYSICAL UNION, 2014-05-28)
    We present observations of significant dynamics within two UV auroral storms observed on Saturn using the Hubble Space Telescope in April/May 2013. Specifically, we discuss bursts of auroral emission observed at the poleward ...

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