Variable Galactic Gamma-Ray Sources VII (VGGRS VII)

6 May 2025, 09:00 → 8 May 2025, 18:30 Europe/Madrid

Sala de Graus Eduard Fontserè (Facultat de Física)

The workshop on Variable Galactic Gamma-Ray Sources (VGGRS) VII will mostly focus on observational studies and modelling  of gamma-ray binary systems and related objects, covering recent  discoveries and advances in the field.

We will also take this opportunity to celebrate the long and very fruitful career of Prof. Josep Maria Paredes, who recently became Professor Emeritus of the University of Barcelona. 

Prof. Paredes has been a leading figure in studying binary systems for over four decades, contributing very significantly to research in this field, and mentoring several generations of scientists.

Participation is by invitation only.

VGGRS Organizers: 

Valentí  Bosch-Ramon  (Chair)

Dmitry Khangulyan (Chair)

Felix Aharonian 

Pol Bordas   

Josep Maria Paredes 

Marc Ribó 

Olaf Reimer

Yasunobu Uchiyama

 

Esther Pallarés Guimerà (ICCUB) - Adminsitrative staff

Anna Argudo Boter (ICCUB) - Adminsitrative staff

 

Organized by: 

Right of information in relation to the data processing VGGRS VII.pdf

Tuesday 6 May

09:00 Registration

1 MAGIC view on binary systems

Speaker: Alicia Lopez-Oramas

VGGRS-VII_Lopez-Oramas_v2.pdf

2 VERITAS and gamma-ray binaries/microquasars

Speaker: Gernot Maier

gmaier.pdf

3 H.E.S.S. Observations of Binary Systems

Speaker: Lalenthra Fisher

Fisher_VGGRS2025_H.E.S.S.Observations_of_Binary_Systems.pdf

4 LST view on variable galactic gamma-ray sources

Speaker: Pol Bordas

LST_PBordas_VGGS-VII.pdf

5 Ultrahigh-energy gamma-ray emissions associated with Black Hole-Jet Systems

Speaker: Ruo-Yu Liu

microquasars - VGGRS_ruoyuLiu.pdf

11:10 Coffee Break

6 Detections of binaries with HAWC

Speaker: Sabrina Casanova

casanova.pdf

7 SS 433 seen in Gamma Rays

Speaker: Jian Li

SS 433_Jian_LI VGGRS.pdf

8 VHE gamma-ray novae: RS Oph modelling & CTAO perspectives

Speaker: Arnau Aguasca-Cabot

v4_novae_VGGRS_VII.pdf

9 Results of the long-term campaign on Cygnus X-3 by MAGIC

Speaker: Edgar Molina

edgarmolina.pdf

13:00 Lunch break

10 Fermi-LAT view on binary systems

Speaker: Guillem Marti-Devesa

VGGRS_VII_Marti-Devesa.pdf

11 Observations of Galactic binaries in the sub-MeV/MeV band with future prospects

Speaker: Hiroki Yoneda

VGGRS_VII_HYoneda_fin.pdf

12 A methodology for light curve comparison: applications to pulsars and transitional pulsars

Speaker: Diego Torres

Torres_Similarity_Light_Curves.pdf

13 Gamma-ray Variability in Millisecond Pulsar Binaries: Probing Pulsar-Companion Interactions

Speaker: Hongjun An

Pbinaries_VGGRS2025_H.An.pdf

16:20 Coffee Break

14 Discussion

Wednesday 7 May

15 LSI +61 303 — 16 years of GeV observations

Speaker: Daniela Hadasch

LSI_DHadasch_final.pdf

16 Results from Long-Term Radio Monitoring of LS I +61°303 at 15 GHz

Speaker: Frédéric Jaron

LSI61303-Radio-Jaron.pdf

17 An X-ray eye on microquasar jets and their impact on the surrounding medium

Speaker: Samar Safi-Harb

SSafi-Harb-VVGRS_20250507.pdf

18 Multi-wavelength properties of binary pulsar system PSR B1259-63/LS2883

Speaker: Denys Malyshev

malyshev.pdf

19 ALMA observations of binary pulsar PSR B1259-63/LS2883

Speaker: Yutaka Fujita

Fujita_VGGRS.pdf

11:10 Coffee Break

20 Gamma-ray binaries as probes for Fast Radio Bursts

Speaker: Benito Marcote

Marcote_talk_astroparticle.pdf

21 Counterparts of X-ray and gamma-ray binaries

Speaker: Ignacio Negueruela

negueruela.pdf

22 Galactic runaway O and Be stars found using Gaia DR3 and new stellar bow shocks

Speaker: Marc Ribó

mribo_VGGRS_2025.pdf

23 O-type runaway binaries with compact objects

Speaker: Mar Carretero

VGGRSVII_BCN2025_MarCC.pdf

13:00 Lunch break

24 Discussion

25 Paying homage to Prof. Josep Maria Paredes: nearly four decades of friendship and collaboration

Speaker: Josep Martí

16:20 Coffee Break

26 A life in science: Josep Maria Paredes and multi-frequency astrophysics

Speaker: Gustavo E. Romero

27 Josep Maria Paredes: A Lifelong Friend, Collaborator, and the 'Fuel Station of Talents' for My High-Energy Astrophysics Network

Speaker: Felix Aharonian

28 The contribution of Josep Maria Paredes to the MAGIC Collaboration

Speaker: Dr Marc Ribó (Universitat de Barcelona, ICCUB, IEEC)

29 The first steps in Science

Speaker: Josep Maria Paredes

18:30 Cocktail

Thursday 8 May

30 Exploring the environment of Cygnus X-3

Speaker: Pedro Luque Escamilla

pedroluquescamilla.pdf

31 Investigating the effect of Be discs on the emission from gamma-ray binaries

Speaker: Natalie Matchett

Matchett_VGGRS_2025.pdf

32 Reinvestigating the orbit of HESS J0632+057 with SALT

Speaker: Brian van Soelen

vanSoelen_vggr_2025_pdf_version.pdf

33 A revised orbital solution for HESS J0632+057 (=MWC 148)

Speaker: Jorge Casares

VGGRVII_casares.pdf

34 The challenges of identifying Particle-Accelerating Colliding-Wind Binaries

Speaker: Michäel de Becker

VGGRS_VII_DeBecker.pdf

11:10 Coffee Break

35 Massive stars as non-thermal sources

Speaker: Paula Benaglia

Benaglia-2025BCN-toupload.pdf

36 Non-thermal emission from colliding stellar winds

Speaker: Santiago del Palacio

del Palacio_VGGRS2025-1.pdf

37 Solving the Puzzle of Cyg X-3: Gamma-Ray Clues into Jet Dynamics

Speaker: Anton Dmytriiev

slides_VGGRS_2025_A_Dmytriiev.pdf

38 Numerical simulations of microquasar jets

Speaker: Manel Perucho

VGGRS-Perucho.pdf

13:00 Lunch break

39 The power of jets in microquasars and their multi-wavelength emission

Speaker: Dmitriy Khangulyan

DKhangulyan_VGGRSVII.pdf

40 High-resolutions simulations of LS 5039 - energetic particles and non-thermal emission

Speaker: Ralf Kissmann

ralfki.pdf

41 Fermi-type Particle Acceleration in Microquasar Jets

Speaker: Frank Rieger

frank.pdf

42 On the physics at the highest energies of gamma-ray emitting binaries

Speaker: Valentí Bosch-Ramon

vbosch.pdf

16:20 Coffee Break

43 Discussion and farewell