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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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  • " Orphan" γ-ray flares and stationary sheaths of blazar jets 

    MacDonald, Nicholas Roy; Jorstad, Svetlana G.; Marscher, Alan P. (American Astronomical Society, 2017-11-20)
    Blazars exhibit flares across the entire electromagnetic spectrum. Many γ-ray flares are highly correlated with flares detected at longer wavelengths; however, a small subset appears to occur in isolation, with little or ...
  • MAGIC gamma-ray and multi-frequency observations of flat spectrum radio quasar PKS 1510− 089 in early 2012 

    Aleksić, J.; Ansoldi, S.; Antonelli, L. A.; Antoranz, P.; Babic, A.; Bangale, P.; de Almeida, U. B.; Barrio, J. A.; González, J. B.; Bednarek, W. (EDP Sciences, 2014-09-17)
    AIMS: Amongst more than fifty blazars detected in very high energy (VHE, E> 100 GeV) γ rays, only three belong to the subclass of flat spectrum radio quasars (FSRQs). The detection of FSRQs in the VHE range is challenging, ...
  • 3 mm GMVA observations of total and polarized emission from blazar and radio galaxy core regions 

    Casadio, Carolina; Krichbaum, Thomas P.; Marscher, Alan P.; Jorstad, Svetlana G.; Gomez, Jose L.; Agudo, Ivan; Bach, Uwe; Kim, Jae-Young; Hodgson, Jeffrey A.; Zensus, Anton J. (MDPI AG, 2017-10-18)
    We present total and linearly polarized 3 mm Global mm-VLBI Array images of a sample of blazars and radio galaxies from the VLBA-BU-BLAZAR 7 mm monitoring program designed to probe the innermost regions of active galactic ...
  • The detection of the blazar S4 0954+65 at very-high-energy with the MAGIC telescopes during an exceptionally high optical state 

    Collaboration, MAGIC; Ahnen, M. L.; Ansoldi, S.; Antonelli, L. A.; Arcaro, C.; Baack, D.; Babić, A.; Banerjee, B.; Bangale, P.; Almeida, U. Barres de; Barrio, J. A.; Bednarek, W.; Bernardini, E.; Berse, R. Ch.; Berti, A.; Bhattacharyya, W.; Biland, A.; Blanch, O.; Bonnoli, G.; Carosi, R.; Carosi, A.; Ceribella, G.; Chatterjee, A.; Colak, S. M.; Colin, P.; Colombo, E.; Contreras, J. L.; Cortina, J.; Covino, S.; Cumani, P.; Vela, P. Da; Dazzi, F.; Angelis, A. De; Lotto, B. De; Delfino, M.; Delgado, J.; Pierro, F. Di; Domínguez, A.; Prester, D. Dominis; Dorner, D.; Doro, M.; Einecke, S.; Elsaesser, D.; Ramazani, V. Fallah; Fernández-Barral, A.; Fidalgo, D.; Fonseca, M. V.; Font, L.; Fruck, C.; Galindo, D.; López, R. J. García; Garczarczyk, M.; Gaug, M.; Giammaria, P.; Godinović, N.; Gora, D.; Guberman, D.; Hadasch, D.; Hahn, A.; Hassan, T.; Hayashida, M.; Herrera, J.; Hose, J.; Hrupec, D.; Ishio, K.; Konno, Y.; Kubo, H.; Kushida, J.; dić, D. Kuvež; Lelas, D.; Lindfors, E.; Lombardi, S.; Longo, F.; López, M.; Maggio, C.; Majumdar, P.; Makariev, M.; Maneva, G.; Manganaro, M.; Mannheim, K.; Maraschi, L.; Mariotti, M.; Martínez, M.; Masuda, S.; Mazin, D.; Mielke, K.; Minev, M.; Miranda, J. M.; Mirzoyan, R.; Moralejo, A.; Moreno, V.; Moretti, E.; Nagayoshi, T.; Neustroev, V.; Niedzwiecki, A.; Rosillo, M. Nievas; Nigro, C.; Nilsson, K.; Ninci, D.; Nishijima, K.; Noda, K.; Nogués, L.; Paiano, S.; Palacio, J.; Paneque, D.; Paoletti, R.; Paredes, J. M.; Pedaletti, G.; Peresano, M.; Persic, M.; Moroni, P. G. Prada; Prandini, E.; Puljak, I.; Garcia, J. R.; Reichardt, I.; Rhode, W.; Ribó, M.; Rico, J.; Righi, C.; Rugliancich, A.; Saito, T.; Satalecka, K.; Schweizer, T.; Sitarek, J.; Šnidarić, I.; Sobczynska, D.; Stamerra, A.; Strzys, M.; Surić, T.; Takahashi, M.; Takalo, L.; Tavecchio, F.; Temnikov, P.; Terzić, T.; Teshima, M.; Torres-Albà, N.; Treves, A.; Tsujimoto, S.; Vanzo, G.; Acosta, M. Vazquez; Vovk, I.; Ward, J. E.; Will, M.; Zarić, D.; González, J. Becerra; Tanaka, Y.; Ojha, R.; Finke, J.; Lähteenmäki, A.; Järvelä, E.; Tornikoski, M.; Ramakrishnan, V.; Hovatta, T.; Jorstad, S. G.; Marscher, Alan P.; Larionov, V. M.; Borman, G. A.; Grishina, T. S.; Kopatskaya, E. N.; Larionova, L. V.; Morozova, D. A.; Savchenko, S. S.; Troitskaya, Yu. V.; Troitsky, I. S.; Vasilyev, A. A.; Agudo, I.; Molina, S. N.; Casadio, C.; Gurwell, M.; Carnerero, M. I.; Protasio, C.; Pulido, J. A. Acosta (EDP Sciences, 2018-09)
    The very-high-energy (VHE, ≳ 100 GeV) γ-ray MAGIC observations of the blazar S4 0954+65, were triggered by an exceptionally high flux state of emission in the optical. This blazar has a disputed redshift of z=0.368 or z ≥ ...
  • Exploring the connection between Parsec-scale jet activity and broadband outbursts in 3C 279 

    Rani, B.; Jorstad, Svetlana G.; Marscher, Alan P.; Agudo, I.; Sokolovsky, K. V.; Larionov, V. M.; Smith, P.; Mosunova, D. A.; Borman, G. A.; Grishina, T. S.; Kopatskaya, E. N.; Mokrushina, A. A.; Morozova, D. A.; Savchenko, S. S.; Troitskaya, Yu. V.; Troitsky, I. S.; Thum, C.; Molina, S. N.; Casadio, C. (IOP Publishing LTD, 2018-05-10)
    We use a combination of high-resolution very long baseline interferometry (VLBI) radio and multiwavelength flux density and polarization observations to constrain the physics of the dissipation mechanism powering the ...
  • The bright gamma-ray flare of 3C 279 in 2015 June: AGILE detection and multifrequency follow-up observations 

    Pittori, Carlotta; Lucarelli, Fabrizio; Verrecchia, Francesco; Raiteri, Claudia Maria; Villata, M.; Vittorini, Valerio; Tavani, Marco; Puccetti, Simonetta; Perri, M.; Donnarumma, I.; Vercellone, Stefano; Acosta-Pulido, J. A.; Bachev, R.; Benitez, E.; Borman, G. A.; Carnerero, M. I.; Carosati, D.; Chen, W. P.; Ehgamberdiev, Sh. A.; Goded, A.; Grishina, T. S.; Hiriart, D.; Hsiao, H. Y.; Jorstad, Svetlana G.; Kimeridze, G. N.; Kopatskaya, E. N.; Kurtanidze, O. M.; Kurtanidze, S. O.; Larionov, Valeri M.; Larionova, L. V.; Marscher, Alan P.; Mirzaqulov, D. O.; Morozova, Daria A.; Nilsson, K.; Samal, M. R.; Sigua, L. A.; Spassov, B.; Strigachev, A.; Takalo, L. O.; Antonelli, L. A.; Bulgarelli, A.; Cattaneo, P.; Colafrancesco, S.; Giommi, P.; Longo, F.; Morselli, Aldo; Paoletti, F. (IOP Publishing LTD, 2018-04-01)
    We report the AGILE detection and the results of the multifrequency follow-up observations of a bright γ-ray flare of the blazar 3C 279 in 2015 June. We use AGILE and Fermi gamma-ray data, together with Swift X-ray ...
  • Faraday conversion in turbulent blazar jets 

    MacDonald, Nicholas Roy; Marscher, Alan P. (American Astronomical Society, 2018-07-23)
    Low (≲1%) levels of circular polarization (CP) detected at radio frequencies in the relativistic jets of some blazars can provide insight into the underlying nature of the jet plasma. CP can be produced through linear ...
  • Optical emission and particle acceleration in a quasi-stationary component in the jet of OJ 287 

    Sasada, Mahito; Jorstad, Svetlana; Marscher, Alan P.; Bala, Vishal; Joshi, Manasvita; MacDonald, Nicholas R.; Malmrose, Michael P.; Larionov, Valeri M.; Morozova, Daria A.; Troitsky, Ivan S.; Agudo, Ivan; Casadio, Carolina; Gomez, Jose L.; Molina, Sol N.; Itoh, Ryosuke (IOP Publishing LTD, 2018-09-01)
    We analyze the linear polarization of the relativistic jet in BL Lacertae object OJ 287 as revealed by multi-epoch Very Long Baseline Array images at 43 GHz and monitoring observations at optical bands. The electric-vector ...
  • Stochastic modeling of multiwavelength variability of the classical BL Lac Object OJ287 on timescales ranging from decades to hours 

    Goyal, A.; Stawarz, L.; Zola, S.; Marchenko, V.; Soida, M.; Nilsson, K.; Ciprini, S.; Baran, A.; Ostrowski, M.; Wiita, P. J.; Gopal-Krishna; Siemiginowska, A.; Sobolewska, M.; Jorstad, Svetlana; Marscher, Alan P.; Aller, M. F.; Aller, H. D.; Hovatta, T.; Caton, D. B.; Reichart, D.; Matsumoto, K.; Sadakane, K.; Gazeas, K.; Kidger, M.; Piirola, V.; Jermak, H.; Alicavus, F.; Baliyan, K. S.; Baransky, A.; Berdyugin, A.; Blay, P.; Boumis, P.; Boyd, D.; Bufan, Y.; Campas Torrent, M.; Campos, F.; Carrillo Gomez, J.; Dalessio, J.; Debski, B.; Dimitrov, D.; Drozdz, M.; Er, H.; Erdem, A.; Escartin Perez, A.; Ramazani, V. Fallah; Filippenko, A. V.; Gafton, E.; Garcia, F.; Godunova, V.; Gomez Pinilla, F.; Gopinathan, M.; Haislip, J. B.; Haque, S.; Harmanen, J.; Hudec, R.; Hurst, G.; Ivarsen, K. M.; Joshi, A.; Kagitani, M.; Karaman, N.; Karjalainen, R.; Kaur, N.; Koziel-Wierzbowska, D.; Kuligowska, E.; Kundera, T.; Kurowski, S.; Kvammen, A.; LaCluyze, A. P.; Lee, B. C.; Liakos, A.; Lozano de Haro, J.; Moore, J. P.; Mugrauer, M.; Naves Nogues, R.; Neely, A. W.; Ogloza, W.; Okano, S.; Pajdosz, U.; Pandey, J. C.; Perri, M.; Poyner, G.; Provencal, J.; Pursimo, T.; Raj, A.; Rajkumar, B.; Reinthal, R.; Reynolds, T.; Saario, J.; Sadegi, S.; Sakanoi, T.; Salto Gonzalez, J. L.; Sameer; Simon, A. O.; Siwak, M.; Schweyer, T.; Soldan Alfaro, F. C.; Sonbas, E.; Strobl, J.; Takalo, L. O.; Tremosa Espasa, L.; Valdes, J. R.; Vasylenko, V. V.; Verrecchia, F.; Webb, J. R.; Yoneda, M.; Zejmo, M.; Zheng, W.; Zielinski, P.; Janik, J.; Chavushyan, V.; Mohammed, I.; Cheung, C. C.; Giroletti, M. (IOP Publishing LTD, 2018-08-20)
    We present the results of our power spectral density analysis for the BL Lac object OJ 287, utilizing the Fermi-LAT survey at high-energy γ-rays, Swift-XRT in X-rays, several ground-based telescopes and the Kepler satellite ...
  • High-resolution polarization imaging of the Fermi blazar 3C 279 

    Rani, Bindu; Jorstad, Svetlana G.; Marscher, Alan P. (Sissa Medialab, 2017-12-12)
    Ever since the discovery by the Fermi mission that active galactic nuclei (AGN) produce copious amounts of high-energy emission, its origin has remained elusive. Using high-frequency radio interferometry (VLBI) polarization ...

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