Publikationen

Publications 

Exoplaneten: Transit-Zeit-Variationen (TTV) 

 

 

 

    • Ground-based transit observations of the HAT-P-18, HAT-P-19, HAT-P-27/WASP40 and WASP-21 systems 
      Seeliger, M.; Kitze, M.; Errmann, R.; Richter, S.; Ohlert, J. M.; Chen, W. P.; Guo, J. K.; Gögüs, E.; Güver, T.; Aydin, B.; Mottola, S.; Hellmich, S.; Fernandez, M.; Aceituno, F. J.; Dimitrov, D.; Kjurkchieva, D.; Jensen, E.; Cohen, D.; Kundra, E.; Pribulla, T.; Vanko, M.; Budaj, J.; Mallonn, M.; Wu, Z.-Y.; Zhou, X.; Raetz, St.; Adam, C.; Schmidt, T. O. B.; Ide, A.; Mugrauer, M.; Marschall, L.; Hackstein, M.; Chini, R.; Haas, M.; Ak, T.; Güzel, E.; Özdönmez, A.; Ginski, C.; Marka, C.; Schmidt, J. G.; Dincel, B.; Werner, K.; Dathe, A.; Greif, J.; Wolf, V.; Buder, S.; Pannicke, A.; Puchalski, D.; Neuhäuser, R. 
      2015, Monthly Notices of the Royal Astronomical Society, Volume 451, Issue 4, p.4060-4072
      http://arxiv.org/abs/1508.06215
      http://arxiv.org/pdf/1508.06215v1.pdf

 

    • No variations in transit times for Qatar-1 b 
      G. Maciejewski, M. Fernández, F. J. Aceituno, J. Ohlert, D. Puchalski, D. Dimitrov, M. Seeliger, M. Kitze, St. Raetz, R. Errman, H. Gilbert, A. Pannicke, J.-G. Schmidt, and R. Neuhäuser 
      2015, Astronomy & Astrophysics, Volume 577, id.A109, 7 pp. 
      http://arxiv.org/abs/1503.07191 
      http://arxiv.org/pdf/1503.07191v1.pdf 

 

 

    • Transit Timing Analysis in the HAT-P-32 System 
      M.Seeliger, D.Dimitrov, D.Kjurkchieva, M.Mallonn, M.Fernandez, M.Kitze, V.Casanova, G.Maciejewski, J.M.Ohlert, J.G.Schmidt, A.Pannicke, D.Puchalski, E.Gögüs, T.Güver, S.Bilir, T.Ak, M.M.Hohle, T.O.B.Schmidt, R.Errmann, E.Jensen, D.Cohen, L.Marschall, G.Saral, I.Bernt, E.Derman, C.Galan, R.Neuhaeuser 
      2014, MNRAS, 441, 304 
      http://adsabs.harvard.edu/abs/2014MNRAS.441..304S

 

    • Revisiting Parameters for the WASP-1 Planetary System 
      G. Maciejewski, J. Ohlert, D. Dimitrov, D. Puchalski, J. Nedorošcík, M. Vanko, C. Marka, S. Baar, St. Raetz, M. Seeliger, and R. Neuhäuser 
      2014, ACTA ASTRONOMICA, Volume 64, pp. 27 - 43 
      http://arxiv.org/abs/1402.6518 

 

    • Constraints on a Second Planet in the WASP-3 System 
      G.Maciejewski, A.Niedzielski, A.Wolszczan, G.Nowak, R.Neuhaeuser, J.N.Winn, B.Deka, M.Adamów, M.Górecka, M.Fernandez, F.J.Aceituno, J.Ohlert, R.Errmann, M.Seeliger, D.Dimitrov, D.W.Latham, G.A.Esquerdo, L.McKnight, M.J.Holman, E.L.N.Jensen, U.Kramm, T.Pribulla, St.Raetz, T.O.B.Schmidt, Ch.Ginski, S.Mottola, S.Hellmich, Ch.Adam, H.Gilbert, M.Mugrauer, G.Saral, V.Popov, M.Raetz 
      2013, The Astronomical Journal, Volume 146, Issue 6, article id. 147, 12 pp. 
      http://adsabs.harvard.edu/abs/2013AJ....146..147M 

 

    • Multi-site campaign for transit timing variations of WASP-12 b: 
      possible detection of a long-period signal of planetary origin 
      G.Maciejewski, D.Dimitrov, M.Seeliger, St.Raetz, L.Bukowiecki, M.Kitze, R.Errmann, G.Nowak, A.Niedzielski, V.Popov, C.Marka, K.Gozdziewski, R.Neuhaeuser, J.Ohlert, T.C.Hinse, J.W.Lee, C.-U.Lee, J.-N.Yoon, A.Berndt, H.Gilbert, Ch.Ginski, M.M.Hohle, M.Mugrauer, T.Roell, T.O.B.Schmidt, N.Tetzlaff, L.Mancini, J.Southworth, M.Dall'Ora, S.Ciceri, R.Zambelli, G.Corfini, H.Takahashi, K.Tachihara, J.M.Benko, K.Sarneczky, Gy.M.Szabo, T.N.Varga, M.Vanko, Y.C.Joshi, W.P.Chen 
      2013, Astronomy & Astrophysics 551, A108 
      http://adsabs.harvard.edu/abs/2013A%26A...551A.108M 

 

 



Exoplaneten: Eigenschaften 

    • Transmission spectroscopy of the hot Jupiter TrES-3 b: Disproof of an overly large Rayleigh-like feature 
      F. Mackebrandt, M. Mallonn, J. M. Ohlert, T. Granzer, S. Lalitha, A. Garcia Munoz, N. P. Gibson, J. W. Lee, A. Sozzetti, J. D. Turner, M. Vanko, K. G. Strassmeier
      2017, Astronomy & Astrophysics 608, A26
      https://arxiv.org/abs/1709.06124
      https://arxiv.org/pdf/1709.06124.pdf



Blasare: Kurzzeit-Variationen 

    • Blazar spectral variability as explained by a twisted inhomogeneous jet 
      C. M. Raiteri, M. Villata, J. A. Acosta-Pulido, I. Agudo, A. A. Arkharov, ... J. M. Ohlert ...
      2017, Nature 552, 374–377 (21 December 2017) 
      Scientific paper in online version 

 

    • Synchrotron emission from the blazar PG 1553+113. An analysis of its flux and polarization variability 
      C. M. Raiteri, F. Nicastro, A. Stamerra, M. Villata, V. M. Larionov, D. Blinov, J. A. Acosta-Pulido... J. M. Ohlert; ...
      2016, Monthly Notices of the Royal Astronomical Society, Volume 466, Issue 3, p.3762-3774 
      https://arxiv.org/abs/1612.07000
      https://arxiv.org/pdf/1612.07000v1.pdf

 

    • Multifrequency Photo-Polarimetric WEBT Observation Campaign on the Blazar S5 0716+714: Source Microvariability and Search for Characteristic Timescales 
      G. Bhatta, L. Stawarz, M. Ostrowski, A. Markowitz ... J.M. Ohlert; ...
      2016, The Astrophysical Journal, Volume 831, Issue 1, article id. 92, 17 pp. 
      https://arxiv.org/abs/1608.03531
      https://arxiv.org/pdf/1608.03531v1.pdf

 

    • The WEBT campaign on the BL Lac object PG 1553+113 in 2013. An analysis of the enigmatic synchrotron emission 
      C. M. Raiteri; A. Stamerra; M. Villata; V. M. Larionov; ... J. M. Ohlert; ...
      2015, Monthly Notices of the Royal Astronomical Society 2015 454 (1): 353-367
      http://arxiv.org/pdf/1509.02706v1.pdf

 

    • Discovery of a Highly Polarized Optical Microflare in Blazar S5 0716+714 during the 2014 WEBT Campaign 
      Bhatta, G.; Goyal, A.; Ostrowski, M.; ... Ohlert, J. M.; ...
      2015, The Astrophysical Journal Letters, Volume 809, Issue 2, article id. L27, 6 pp.

 

    • 5-day photo-polarimetric WEBT Campaign on Blazar S5 0716+714 - a Study of Microvariability in Blazar 
      Bhatta, Gopal; Ostrwoski, Michal; … Ohlert, Johannes; … 
      2015, American Astronomical Society, AAS Meeting #225, #120.04

 

    • The 72-Hour WEBT Microvariability Observation of Blazar S5 0716+714 in 2009 
      G. Bhatta, J.R. Webb, … J. M. Ohlert … 
      2013, Astronomy & Astrophysics, Volume 558, id.A92, 10 pp.

 

    • Multiwavelength intraday variability of the BL Lacertae S5 0716+714 
      A. Gupta, T.P. Krichbaum, … J. M. Ohlert … 
      2012, Monthly Notices of the Royal Astronomical Society, 425, 1357–1370

 

    • Variability and stability in blazar jets on time scales of years: Optical polarization monitoring of OJ 287 in 2005-2009 
      C. Villforth, K. Nilsson, … J. Ohlert … 
      2009, Monthly Notices of the Royal Astronomical Society, Vol. 402, Issue 3, pp 2087 - 2111

 

    • WEBT multiwavelenght monitoring and XMM-Newton observations of BL Lacertae in 2007-2008 
      C.M. Raiteri, M. Villata …. J. Ohlert … 
      2009, Astronomy & Astrophysics, Volume 507, Issue 2, 2009, pp.769-779

 

    • Tidally Induced Outbursts in OJ 287 during 2005 – 2008 
      M.J. Valtonen, K. Nilsson, … J. Ohlert ... 
      2009, Astrophysical Journal 698 (2009) 781 – 785

 

    • The WEBT Campaign on the Intermediate BL Lac Object 3C66A in 2007-2008 
      M. Böttcher; K.Fultz; …. J. M. Ohlert ….. 
      2009, The Astrophysical Journal, Volume 694, Issue 1, pp. 174-182 (2009)

 

    • Results of WEBT, VLBA and RXTE monitoring of 3C 279 during 2006-2007 
      Larionov, V. M.; Jorstad, S. G.; …. J. Ohlert … 
      2008, Astronomy & Astrophysics, Volume 492, Issue 2, 2008 pp. 389-400

 

    • A new activity phase of the blazar 3C 454.3.
      Multifrequency observations by the WEBT and XMM-Newton in 2007-2008 
      C.M. Raiteri, M. Villata …. J. Ohlert … 
      2008, Astronomy & Astrophysics, Volume 491, Issue 3, 2008 pp. 755-766

 

    • The high activity of 3C 454.3 in autumn 2007. Monitoring by the WEBT during the AGILE detection 
      C.M. Raiteri, M. Villata …. J. Ohlert … 
      2008, Astronomy & Astrophysics, Volume 485, Issue 2, 2008 pp. L17-L20

 

    • Radio-to-UV monitoring of AO 0235+164 by the WEBT and Swift during the 2006-2007 outburst 
      C.M. Raiteri, M. Villata …. J. Ohlert … 
      2008, Astronomy & Astrophysics, Volume 480, Issue 2, 2008 pp. 339-347

 

    • The WEBT Campaign on the Blazar 3C 279 in 2006 
      Böttcher, M. …. Ohlert, J. ….. 
      2007, The Astrophysical Journal, Volume 670, Issue 2, pp. 968-977

 

    • WEBT and XMM-Newton observations of 3C 454.3 during the post-outburst phase.
      Detection of the little and big blue bumps. 
      C.M. Raiteri, M. Villata …. J. Ohlert … 
      2007, Astronomy & Astrophysics Volume 473, Issue 3, October III 2007 pp. 819-827

 

    • Prominent activity of the blazar OJ 287 in 2005. XMM-Newton and multiwavelength observations 
      Ciprini, S. …. Ohlert, J. ….. 
      2007, Memorie della Societa Astronomica Italiana, v.78, p.741

 

    • Multifrequency variability of the blazar AO 0235+164.
      The WEBT campaign in 2004-2005 and long-term SED analysis. 
      Raiteri, C. …. Ohlert, J. ….. 
      2006, Astronomy & Astrophysics, 459: December I 2006, 731-743

 

    • The unprecedented optical outburst of the quasar 3C 454.3.
      The WEBT campaign of 2004-2005 
      Villata, M., C.M. Raiteri …. Ohlert, J. ….. 
      2006, Astronomy & Astrophysics, 453: July III 2006, 817-822

 

    • Testing the inverse-Compton catastrophe scenario in the intra-day variable blazar S5 0716+71.
      I. Simultaneous broadband observations during November 2003. 
      Ostorero, L., …. Ohlert, J. ….. 
      2006, Astronomy & Astrophysics, 451, Issue 3, June I 2006 797-807

 

    • Coordinated Multiwavelength Observation of 3C 66A during the WEBT Campaign of 2003-2004 
      Böttcher, M. …. Ohlert, J. ….. 
      2005, The Astrophysical Journal, Volume 631: 169-186, Sept. 2005

 

    • A new Doppler image of the weak-line T Tauri star V430 Tauri 
      Tobias Schmidt, Eike Guenther, Artie P. Hatzes, Christoph Ries, Michael Hartmann, Johannes M. Ohlert, Holger Lehmann 
      2005, Astronomische Nachrichten / AN 326, No 7 (2005) S. 667

 

    • Hunting for radio-quiet BL Lacs - the 2dF BL Lac survey 
      Jochen Heidt, Diana Londish, Brian Boyle, Scott Croom, Johannes Ohlert 
      2005, Astronomische Nachrichten / AN 326, No 7 (2005) S. 543

 

    • The WEBT campaign to observe AO 0235+16 in the 2003-2004 observing season.
      Results from radio-to-optical monitoring and XMM-Newton observations. 
      Raiteri, C.M., ….. J. Ohlert …. 
      2005, Astronomy & Astrophysics, 438: 39-53, July 2005



Sonnensystem 

 

    • The size, shape, density and ring of the Dwarf planet Haumea from a stellar occultation 
      J. L. Ortiz, P. Santos-Sanz, B. Sicardy, ... J. Ohlert ...
      2017, Nature, Volume 550, Issue 7675, pp. 219-223 
      Scientific paper in online version 

 



Sterne 

    • On the nature of the candidate T-Tauri star V501 Aurigae 
      M. Vanko, G. Torres, L. Hambálek, T. Pribulla, L.A. Buchhave, J. Budaj, P. Dubovský, Z. Garai, C. Ginski, K. Grankin, R. Komžík, V. Krushevska, E. Kundra, C. Marka, M. Mugrauer, R. Neuhaeuser, J. Ohlert, Š. Parimucha, V. Perdelwitz, St. Raetz, S.Yu. Shugarov
      2017, Monthly Notices of the Royal Astronomical Society, Volume 467, Issue 4, p.4902-4913 
      https://arxiv.org/abs/1702.04512
      https://arxiv.org/pdf/1702.04512.pdf

 

 

Letzte Änderung: 15. Aug. 2018
Last update: Aug. 15., 2018