Dimitrios Giannios

NOTE: E-mail addresses end with @purdue.edu

Professor of Physics and Astronomy

Group:

Faculty

Office:

PHYS 325

Phone:

(765) 494-5194

E-mail:

dgiannio

Website:

[Homepage]

Educational and Professional History

Research Interests

High-energy astrophysics, gravity:

• Electromagnetic counterparts to gravitational wave sources
• Theoretical study of the physics of relativistic jets (jets from galactic centers, from compact objects in binary systems and gamma-ray bursts)
• Acceleration and composition of ultra-high-energy cosmic rays, associated neutrino emission
• The nature of the central engine of gamma-ray bursts

Selected Publications (as of 2018)

1. "Off-axis short GRBs from structured jets as counterparts to GW events", Kathirgamaraju, A., Barniol Duran, R., & Giannios, D., 2018, MNRAS Letters, 473, L121
2. "Collapsar Gamma-Ray Bursts: how the luminosity function dictates the duration distribution", Petropoulou, M., Barniol Duran, R. & Giannios, D., 2017, MNRAS, 472, 2722
3. "Three-dimensional simulations of AGN jets: magnetic kink instability versus conical shocks", Barniol-Duran, R., Tchekhovskoy, A. & Giannios, D., MNRAS, 469; 4957
4. "Radio Emission from Sgr A*: Pulsar Transits Through the Accretion Disc", Christie, I. M., Petropoulou, M., Mimica, P., & Giannios, D., 2017, MNRAS Letters, 468, L26
5. "Plasmoids in relativistic reconnection, from birth to adulthood: first they grow, then they go", Sironi, L., Giannios, D. & Petropoulou, M., 2016, MNRAS, 462, 48 
6. "GRB off-axis afterglows and the emission from the accompanying supernovae", Kathirgamaraju, A., Barniol-Duran, R. & Giannios, D., 2016, MNRAS, 461, 1568
7. "Flares from Galactic centre pulsars: a new class of X-ray transients?", Giannios, D., & Lorimer D, 2016, MNRAS Letters, 459, L95
8. "Jets shine through shocks or magnetic reconnection?", Sironi, L., Petropoulou, M & Giannios, D., 2015, MNRAS, 450, 183
9. "Relativistic Magnetic Reconnection in Pair Plasmas and Its Astrophysical Applications", Kagan, D. Sironi, L., Cerutti, B. & Giannios, D., 2015, Space Science Reviews, 191, 545
10. "Magnetic flux of progenitor stars sets gamma-ray burst luminosity and variability", Tchekhovskoy, A. & Giannios, D., 2015, MNRAS, 447, 327
11. "Black-hole jets without large-scale net magnetic flux", Parfrey, K., Giannios, D., & Beloborodov, A., 2015, MNRAS Letters, 446, L61
12. "Testing the neutrino annihilation model for launching GRB jets", Leng, M. & Giannios, D., 2014, MNRAS Letters, 445, L1
13. "Relativistic Pair Beams from TeV Blazars: A Source of Reprocessed GeV Emission rather than IGM Heating", Sironi, L., & Giannios, D., ApJ, 2014, ApJ, 787, 49
14. "A Late-time Flattening of Light Curves in Gamma-Ray Burst Afterglows", Sironi, L., & Giannios, D., 2013, ApJ, 778, 107
15. "Reconnection-driven plasmoids in blazars: fast flares on a slow envelope", Giannios, D., 2013, MNRAS, 431, 355
16. “Optical and X-ray transients from planet-star mergers” Metzger, B. D., Giannios, D., & Spiegel, D. S. 2012, MNRAS, 425, 2778
17. “The peak energy of dissipative GRB photospheres” Giannios, D. 2012, MNRAS, 422, 3092
18. “Afterglow Model for the Radio Emission from the Jetted Tidal Disruption Candidate Swift J1644+57” Metzger, B. D., Giannios, D., & Mimica, P., 2012, MNRAS, 420, 3528
19. “GRB afterglow light curves from realistic density profiles”, Mimica, P., & Giannios, D. , 2011, MNRAS, 418, 583
20. “A relativistic jetted outburst from a massive black hole fed by a tidally disrupted star”, Bloom, J. S., Giannios, D., et al., 2011, Science, 333, 203
21. “Radio transients by stellar tidal disruption by massive black holes”, Giannios, D., & Metzger, B. D., 2011, MNRAS, 416, 2102
22. “Heavy nuclei synthesized in gamma-ray burst outflows as source of UHECRs”, Metzger, B. D., Giannios, D., & Horiuchi, S. 2011, MNRAS, 415, 2495
23. “The Proto-Magnetar Model for Gamma-Ray Bursts”, Metzger, B. D., Giannios, D., Thompson, T. A., Bucciantini, N., & Quataert, E. 2011, MNRAS, 413, 2031
24. “UHECRs from magnetic reconnection in relativistic jets”, Giannios, D. 2010, MNRAS, 408, L46
25. “Superflares from magnetars revealing the GRB central engine”, Giannios, D. 2010, MNRAS, 403, L51
26. “Fast TeV variability from misaligned minijets in the jet of M87”, Giannios, D., Uzdensky, D. A., & Begelman, M. C. 2010, MNRAS, 402, 1649
27. “Fast TeV variability in blazars: jets in a jet”, Giannios, D., Uzdensky, D. A., & Begelman, M. C. 2009, MNRAS, 395, L29
28. “Deceleration of arbitrarily magnetized GRB ejecta: the complete evolution”, Mimica, P., Giannios, D., & Aloy, M. A. 2009, A&A, 494, 879
29. "Prompt GRB emission from gradual energy dissipation", Giannios, D. 2008, A&A, 480, 305
30. "On the existence of reverse shock in magnetized GRB ejecta", Giannios, D., Mimica, P., & Aloy, M. A. 2008, A&A, 478, 747
31. "Spectral and timing properties of a dissipative γ-ray burst photosphere", Giannios, D., & Spruit, H. C. 2007, A&A, 469, 1
32. "Prompt emission spectra from the photosphere of a GRB", Giannios, D. 2006, A&A, 457, 763
33. "Flares in GRB afterglows from delayed magnetic dissipation", Giannios, D. 2006, A&A, 455, L5
34. "The role of kink instability in magnetically driven jets", Giannios, D., & Spruit, H. C., 2006, A&A, 450, 887
35. "Spectra of black-hole binaries in the low/hard state: from radio to X-rays", Giannios, D. 2005, A&A, 437, 1007
36. "Spherically symmetric, static spacetimes in a tensor-vector-scalar theory", Giannios, D. 2005, PhRvD, 71, 3511