Andreja Gomboc's Homepage – Stars, asteroids, and accretion discs in vicinity of a black hole

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1.    Kostić, U., Čadež, A., Calvani, M., Gomboc, A., 2009. A&A, Vol. 496, p. 307-315. Tidal effects on small bodies by massive black holes. arXiv:0901.3447v1 http://www.fiz.uni-lj.si/astro/pdf.gif

 

2.    Kostić, U., Gomboc, A., Čadež, A., Calvani, M., 2009. To appear in the proceedings of Symposium 7: Grand Challenges in Computational Astrophysics of the JENAM 2008, Vienna, 8-12 Sept 2008. Modelling the light curves of objects tidally disrupted by a black hole. arXiv:0902.2122v1 http://www.fiz.uni-lj.si/astro/pdf.gif

 

3.    Gomboc, A., Čadež, A., Calvani, M., Kostić, U., 2007. Relativistic astrophysics and cosmology - Einstein's legacy : proceedings of the MPE/USM/MPA/ESO joint astronomy conference held in Munich, Germany, 7-11 November 2005, (ESO astrophysics symposia), p. 141-143: Tidal capture by a Black Hole and Flares in Galactic centres. ps

 

4.    Kostić, U., Čadež, A., Gomboc, A., 2007. Relativistic astrophysics and cosmology - Einstein's legacy : proceedings of the MPE/USM/MPA/ESO joint astronomy conference held in Munich, Germany, 7-11 November 2005, (ESO astrophysics symposia), p. 149-151: Clumps of material orbiting a black hole and the QPOs. ps

 

5.    Čadež, A., Calvani, M., Gomboc, A., Kostić, U., 2006. Albert Einstein Century International Conference, 18-22 July 2005, Paris, France, AIP Conference Proceedings, Vol. 861, p. 566-571: Do Flares in Sagittarius A* Reflect the Last Stage of Tidal Capture? ps

 

6.    A. Gomboc and A. Čadež, The Astrophysical Journal , 20th May 2005, Vol. 625, p. 278-290; Effects of Black Hole's Gravitational Field on the Luminosity of Star During Close Encounter

 

version with full resolution figures: pdf

astro-ph 0502507: ps 

figures:    figure 1:  low-res (2.9M)   high-res (21.4M) 

                figure 2:  low-res (0.2M)   high-res (2.7M)  

                figure 3a: high-res (0.06M)     figure 3b: high-res (0.08M)

                figure 4:  low-res (1.4M)  high-res (24M) 

                figure 5:  low-res (1.4M)  high-res (24M)  

                figure 6:  low-res (0.7M)  high-res (8.9M)     

                figure 7:  low-res (0.04M)  high-res (0.8M)

 

Tidal disruption of the star by a black hole:
mpeg
movies:
                   view from above the stellar orbital plane:                              view in the stellar orbital plane:

  Fig-l=0   Fig-l=7     Fig-l=4pol     Fig-l=4eq
   
radial infall (0.28 MB)  distant flyby(0.72 MB)         (1.86 MB) critical encounter (1.48 MB)
 
(orbital ang. mom. l=0)          (l=7)                                                (l=4)

5.     GOMBOC, Andreja. Črne luknje v galaktičnih jedrih. V: MUŠEVIČ, Igor (ur.), ŠKARABOT, Miha (ur.). 3. konferenca fizikov v osnovnih raziskavah, Zdravilišče Laško, 11. oktober 2002. Zbornik povzetkov. Ljubljana: DMFA, založništvo, 2002, 2002, str. 27.

 

6.      2. Black Holes Illuminated by Infalling Material
A. Gomboc, C. Fanton, L. Carlotto, A. Čadež
The Eighth Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation, and Relativistic Field Theorie. Singapore [etc.]: World Scientific, 1999, p. 759-761. ps

avi movies, showing how the infalling point source illuminates the imagined distant celestial sphere, centered on the black hole:
 

fig_01(6,4MB) 
Case A (linear)
a light source with zero angular momentum with respect to the black hole falling into a Schwarzschild black hole (in linear intensity scale). 
 

fig_01(12,5MB) 
Case C (logarithmic)
a light source with zero angular momentum with respect to the black hole falling into a Kerr black hole with a=0.998 M in equatorial plane (in logarithmic intensity scale). 

fig_01  (7MB) 
Case A (logarithmic)
a light source with zero angular momentum with respect to the black hole falling into a Schwarzschild black hole (in logarithmic intensity scale). 

fig_01(9,5MB) 
Case E (logarithmic)
a light source with zero angular momentum  with respect to the black hole falling into a Kerr black hole with a=0.998 M along the pole (in logarithmic intensity scale). 

fig_01(6,7MB) 
Case B (linear)
a light source with critical angular momentum with respect to the black hole falling into a Schwarzschild black hole (in linear intensity scale). 

fig_01(8,6MB) 
Case D (logarithmic)
a light source with co-rotating critical angular momentum with respect to the black hole falling into2 a Kerr black hole with a=0.998 M in equatorial plane (in logarithmic intensity scale). 

fig_01(7,5MB) 
Case B (logarithmic)
a light source with critical angular momentum with respect to the black hole falling into a Schwarzschild black hole (in logarithmic intensity scale). 

fig_01(18,6MB) 
Case F (logarithmic)
a light source with counter-rotating critical angular momentum with respect to the black hole falling into a Kerr black hole with a=0.998 M in equatorial plane (in logarithmic intensity scale). 

 

7.      The Flashy Disappearance of a Star Falling Behind the Horizon of a Black Hole
A. Čadež & A.Gomboc
Astron. Astrophys. Suppl. Ser. 119, 293-306 (1996)
pdf

 

8.     On X-ray Emission Lines from Active Galactic Nuclei and Disk Models

Čadež, M. Brajnik, A. Gomboc, M. Calvani, C. Fanton, Astronomy&Astrophysics, Vol. 403, p. 29-41, 2003. ps

 

9.     On X-ray emission lines from active galactic nuclei and disk models

Čadež, A., Brajnik, M., Gomboc, A., Calvani, M., Fanton C. 2003, In Proceedings of the Texas symp. on relativistic astrophys.  `` http://www.fiz.uni-lj.si/astro/pdf.gif

 

10.  Rapid Luminosity Changes due to Interaction with a Black Hole
Andreja Gomboc, PhD dissertation, Ljubljana, September 2001.

 

11.  Bursts and Black Holes
A. Gomboc & A. Čadež
Gamma-Ray Bursts in the Afterglow Era, Proceedings of the International workshop held in Rome, CNR headquarters, 17-20 October, 2000. Berlin Heidelberg: Springer, 2001, p. 333.ps

 

12.  On the fate of stars near a supermassive black hole

Čadež & A. Gomboc, Proceedings of the  X-ray Astronomy '999: Stellar Endpoints, AGN and the Diffuse Background, Bologna, 6-10 September 1999.  (AIP conference proceedings ; 599). New York : American Institute of Physics, 2001. - p. 530-533.ps

13.  Feeding the Monster
A. Gomboc & A. Čadež
Proceedings of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, Paris, 1998 , Nuclear Physics B, 80, North-Holland, Amsterdam, 2000
ps
 gz file
 

14.  The Final Stages of the Disappearance of a Star Behind the Horizon of a Galactic Black Hole
A. Gomboc & A. Čadež
Proceedings of the 12th IAP Astrophysics Colloquium
Variable Stars and the Astrophysical Returns of Microlensing Surveys, p. 413
Paris, 1996  Editions Frontieres
ps

 

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