A. Heines
6 Papers
177 Citations
A. Heines is an academic researcher. The author has contributed to research in topics: Blazar & BL Lac object. The author has an hindex of 4, co-authored 6 publications.
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Papers
Optical and radio variability of the BL Lac object AO 0235+16: a possible 5-6 year periodicity
C. M. Raiteri,M. Villata,Hugh D. Aller,M. F. Aller,Jochen Heidt,Omar M. Kurtanidze,L. Lanteri,M. Maesano,Enrico Massaro,F. Montagni,Roberto Nesci,K. Nilsson,M. G. Nikolashvili,P. Nurmi,L. Ostorero,T. Pursimo,R. Rekola,A. Sillanpää,L. O. Takalo,H. Teräsranta,G. Tosti,Thomas J. Balonek,Markus Feldt,E. J McGrath,A. Heines,C. Heisler,J. Hu,Mark R. Kidger,J. R. Mattox,A. K. Pati,Russell M. Robb,A. C. Sadun,Prajval Shastri,Stefan Wagner,J. Wei,X. Wu +35 more
TL;DR: In this paper, the optical and radio data on the BL Lacertae object AO 0235+16 have been collected in the last four years by a wide international collaboration, which confirm the intense activity of this source.
•Journal Article
Confirmation of the 12-year optical outburst cycle in blazar oj 287
A. Sillanpää,L. O. Takalo,T. Pursimo,Harry Lehto,Kari Nilsson,Pekka Teerikorpi,P. Heinaemaeki,Mark R. Kidger,J. A. de Diego,J. N. González-Pérez,J. M. Rodríguez-Espinosa,T. Mahoney,P. Boltwood,Deborah Dultzin-Hacyan,Erika Benítez,G. W. Turner,Jeff W. Robertson,R. K. Honeycut,Yu. S. Efimov,N. M. Shakhovskoy,P. A. Charles,K. J. Schramm,U. Borgeest,J. V. Linde,W. Weneit,D. Kuehl,T. Schramm,A. C. Sadun,R. Grashuis,Jochen Heidt,Stephan Wagner,H. Bock,M. Kuemmel,A. Heines,Massimo Fiorucci,G. Tosti,Gabriele Ghisellini,C. M. Raiteri,M. Villata,G. de Francesco,S. Bosio,G. Latini +41 more
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Multifrequency monitoring of blazars OJ 287 and 3C 66A.
L. O. Takalo,A. Sillanpää,T. Pursimo,Harry J. Lehto,K. Nilsson,Pekka Teerikorpi,Pekka Heinämäki,Mark R. Kidger,J. A. de Diego,J. N. González-Pérez,J. M. Rodríguez-Espinosa,T. Mahoney,P. Boltwood,Deborah Dultzin-Hacyan,Erika Benítez,G. W. Turner,Jeff W. Robertson,R. K. Honeycut,Yu. S. Efimov,N. M. Shakhovskoy,P. A. Charles,K. J. Schramm,U. Borgeest,J. V. Linde,W. Weneit,D. Kühl,T. Schramm,A. C. Sadun,R. Grashuis,Jochen Heidt,S. J. Wagner,H. Bock,M. Kümmel,A. Heines,Massimo Fiorucci,G. Tosti,G. Ghisellini,C. M. Raiteri,M. Villata,G. de Francesco,S. Bosio,G. Latini,M. F. Aller,D. Aller,Philip A. Hughes,E. Valtaoja,H. Teräsranta,Merja Tornikoski,John K. Webb,Elena Pian,Aldo Treves,Chris Shrader,B. McCollum +52 more
- 01 Jan 1996
TL;DR: In this paper, the authors present preliminary results from an intensive multifrequency monitoring of blazars OJ 287 and 3C 66A and observe continuous small amplitude variability in time scales of days.
1
Variability Characteristics of Blazar OJ 287
L. O. Takalo,A. Sillanpää,T. Pursimo,Harry J. Lehto,K. Nilsson,Pekka Teerikorpi,Pekka Heinämäki,Mark R. Kidger,J. A. de Diego,T. Mahoney,J. M. Rodriguez-Espinosa,José Nicolás González-Pérez,P. Boltwood,Deborah Dultzin-Hacyan,Erika Benítez,G. W. Turner,Jeff W. Robertson,R. K. Honeycut,Yu. S. Efimov,N. M. Shakhovskoy,P. A. Charles,D. Kühl,K. J. Schramm,U. Borgeest,J. V. Linde,W. Weneit,T. Schramm,A. C. Sadun,R. Grashuis,Jochen Heidt,H. Bock,Stephan Wagner,M. Kümmel,A. Heines,Massimo Fiorucci,G. Tosti,C. M. Raiteri,M. Villata,G. Latini,S. Bosio,G. Ghisellini,G. de Francesco +41 more
- 01 Jan 1996
TL;DR: In this article, the authors used the OJ-94 project for monitoring OJ 287 during its predicted new outburst in 1994, which was almost at the predicted time, and obtained the best ever obtained light curves for any extragalactic object.
Optical and radio variability of the BL Lacertae object AO 0235+16: A possible 5-6 year periodicity
C. M. Raiteri,M. Villata,Hugh D. Aller,Margo F. Aller,Jochen Heidt,Omar M. Kurtanidze,L. Lanteri,M. Maesano,Enrico Massaro,F. Montagni,Roberto Nesci,K. Nilsson,Maria G. Nikolashvili,Pasi Nurmi,L. Ostorero,T. Pursimo,R. Rekola,A. Sillanpää,L. O. Takalo,H. Teräsranta,G. Tosti,Thomas J. Balonek,Markus Feldt,A. Heines,C. Heisler,J. Hu,M. R. Kidger,J. R. Mattox,E. J McGrath,A. K. Pati,Russell M. Robb,A. C. Sadun,Prajval Shastri,Stefan Wagner,J. Wei,X. Wu +35 more
TL;DR: In this paper, the authors investigated the existence of typical variability time scales and of possible correlations between the optical and radio emissions by means of visual inspection and Discrete Correlation Function (DCF) analysis.