Anisotropies in core-collapse supernova explosions

Contribution List

8. 3D hydrodynamical simulation of the clumpy supernova ejecta

Petar Kostić

We present a 3D hydrodynamical simulation of expanding ejecta of supernova. The code is written in C language. It uses the MUSCL-Hancock finite volume scheme. The ejecta is initialized as expanding density profile with kinetic energy far exceeding the internal energy. The integrated mass and total energy of the ejecta are 1.4 Ms and 10^51 erg. For the purpose of obtaining the...

20. 3D MHD modeling from the onset of the SN to the full-fledged SNR

Antonio Tutone (speaker), Salvatore Orlando, Marco Miceli, Shigehiro Nagataki, Masaomi Ono, Gilles Ferrand, Giovanni Peres

"The physical properties and morphology of a supernova remnant (SNR) are expected to reflect possible asymmetries and anisotropies developed soon after the parent supernova (SN) explosion and the internal structure of the progenitor star.

The aim of this work is to...

11. Anisotropies in SN1987A

S. Nagataki, M. Ono, T. Takiwaki, A. Wongwathanarat, S. Orlando, M. Miceli, H. Umeda, T. Yoshida, G. Ferrand, I. Seitenzahl, F. Roepke

I would like to present our research history on SN1987A. Briefly I would like to present our recent study on Type Ia SNRs.

10. Anisotropies in the gamma-ray emission of SNRs

M. Lemoine-Goumard

Over the past decade, gamma-ray observations of supernova remnants with space-based instruments, such as the Fermi-Large Area Telescope (LAT), and ground-based instruments such as the High Energy Stereoscopic System (H.E.S.S.), the Major Atmospheric Gamma-Ray Imaging Cherenkov (MAGIC) telescopes, and the Very Energetic Radiation Imaging Telescope Array System (VERITAS)...

18. Anisotropies in winds and nebulae around Luminous Blue Variables.

Corrado Trigilio, Grazia Umana, Claudia Agliozzo, Carla Buemi, Filomena Bufano, Francesco Cavallaro, Adriano Ingallinera, Paolo Leto, Simone Riggi

Luminous Blue Variables (LBVs) are luminous, massive stars, which represent a crucial and relatively short phase of massive stars evolution between core-hydrogen burning O-type stars and helium burning Wolf- Rayet stars. They are characterized by...

23. Detection of Late-Time Optical Emission from SN 1941C in NGC 4136

Kathryn E. Weil (speaker), Robert A. Fesen

We report the detection of broad oxygen emission lines from the site of SN 1941C nearly eight decades after outburst, making it the oldest detected core-collapse SN/youngest core-collapse SNR with a well determined age. In sharp contrast to the strongly blueshifted emission line profiles observed for some other late-time CCSNe thought to be due to...

6. Discovery of an overionized jet-like structure in the SNR IC443

Emanuele Greco (speaker), Marco Miceli, Salvatore Orlando, Eleonora Troja, Giovanni Peres, Fabrizio Bocchino

"IC 443 is a supernova remnant (SNR) located in a complex environment and interacting with nearby clouds. Indications for the presence of overionized plasma have been found though the possible physical causes of overionization are still debated. Moreover, because of its peculiar...

2. Equity, Diversity, and Inclusion in Astronomy

Rosaria Bonito

This talk will briefly present the issues related to equity, diversity, and inclusion in Astronomy. Unconscious bias on topics including nationality, gender, neuro-diversity, and different ability as well as projects already developed or under development to practice inclusion will be discussed.

5. First 3D Morpho-kinematical model of a SNR. Case of VRO 42.05.01 (G 166.0 +4.3).

S. Derlopa, P. Boumis, A. Chiotellis, W. Steffen, S. Akras

"Supernova Remnants (SNRs) are the nebulae created after the violent death (Supernovae, SN) of certain stars (progenitor stars). Since SNRs are the final part of the chain of the stellar evolution, by probing them we gain valuable information about the nature and evolution of the progenitor star as well as about the explosion...

15. Gap transients and interacting supernovae

A. Pastorello

Modern surveys have revealed a wide of variety of stellar transients showing signatures of interaction between the most recent ejecta and pre-existing circumstellar material. Some of them are intermediate-luminosity objects (with absolute magnitudes ranging from -10 to -15), and can be faint SNe, non-terminal single outbursts of massive stars, giant eruptions of luminous blue...

3. Highly magnetic neutron starts: an observational review

Alice Borghese

Magnetars are the strongest magnets we know of. Their X-ray emission is powered by the instabilities and decay of their huge magnetic field (~10^14 -10^15 G). The hallmark of these isolated neutron stars is the unpredictable and variable bursting activity observed in the X-/gamma ray regime and on different time scales (from milliseconds up to tens of seconds). These flaring...

21. Investigating the effects of the inhomogeneous interstellar medium in shaping the morphology of SNR IC 443

S. Ustamujic, S. Orlando, E. Greco, M. Miceli, F. Bocchino, and G. Peres

The morphology and the distribution of material observed in SNRs reflect both the interaction of the SN blast wave with the ambient environment, and the physical processes associated to the SN explosion and the internal structure of the progenitor star. IC443 is a SNR located in a quite complex environment: it...

7. Jet-cocoon signatures in broad-line supernovae associated with gamma-ray bursts

L. Izzo

The progenitor stars of long gamma-ray bursts are rapidly rotating stripped-envelope massive stars. During the last moments of their lives, the collapse of the central core powers a supernova explosion while in the most central regions matter flows around a newly formed spinning black hole (or a magnetar). This leads to the formation of a powerful jet, which is capable to completely...

14. Linking the morphology of SNRs to anisotropies in parent core-collapse SNe through MHD simulations

Orlando S.

The structure and morphology of SNRs reflect the properties of the parent SNe and the characteristics of the inhomogeneous environments through which the remnants expand. Linking the morphology of SNRs to anisotropies developed in their parent SNe can be essential to obtain key information on many aspects of the explosion processes associated with SNe. Nowadays, our capability...

24. Long-term evolution of core-collapse supernova asymmetries from shock revival to shock breakout

Annop Wongwathanarat, Thomas Janka, Ewald Mueller, Victor Utrobin

Over the past decade remarkable progress has been made in simulating long-term evolution of core-collapse supernova explosions in three dimensions. Current state-of-the-art simulations are able to follow the non-radial asymmetries fostered by the growth of hydrodynamic instabilities from the shock revival phase until the...

12. Magnetorotational explosions and the road to proto-magnetars

M. Obergaulinger (speaker), M.Á. Aloy

Coupling special relativistic magnetohydrodynamics and spectral neutrino transport, we performed long-term simulations of the collapse of rapidly rotating stellar cores with strong magnetic fields. After their collapse, these cores may launch highly energetic explosions. Our models include cores in which the proto-neutron star at the centre of the...

1. Modeling Multiwavelength Emission of Super-Eddington accreting Black Hole ULXs

Elena Ambrosi (Speaker), Luca Zampieri

"Ultra-luminous X-ray Sources (ULXs) are point like off-nuclear X-ray sources whose bolometric luminosity exceeds the Eddington limit for a 10 solar masses Black Hole (BH) (Fabbiano, 1989).

Their observational properties, as the X-ray luminosity, the variability and the spectral changes, suggest that ULXs are compact object accreting via a disc...

19. Neutron star mergers across the electromagnetic spectrum

E. Troja

The discovery of the gravitational wave transient GW170817 and its electromagnetic counterparts ushered in a new era of multi-messenger astrophysics, in which both gravitational waves and light provide complementary views of the same source. These observations gave astronomers the unprecedented opportunity to probe the merger of two neutron stars, solving decade-long mysteries...

13. Pulsar Wind Nebulae and their winds

B. Olmi

"Pulsar Wind Nebulae (PWNe) are very fascinating and puzzling objects. They are bright at a very broad range of energies, showing various morphologies, a large variety of emission properties and complex features. They are among the most efficient particles accelerators in the Galaxy, with evidence of large escape and diffusion of particles from the nebulae in the...

17. Pursuing the afterlife: unveiling the inner engine from late-time observations of supernovae

Terreran, Margutti, et al.

Late-time observation of supernovae have already proven to be an invaluable source of information, providing a privileged insight to the innermost region of the ejecta, and therefore on the core of the progenitor star. By waiting long enough for the ejecta to become optically thin, we could in principle reveal the compact remnant left by the explosion. Very...

16. Revisiting the ejecta asymmetries in CasA with a novel method for component separation in X-rays

Adrien Picquenot ; Fabio Acero

In the X-ray emission of supernovae remnants, the shocked interstellar medium, the shocked ejecta and the synchrotron possess a different spatial and spectral signature, but are closely entangled. Extracting the intrinsic spatial and spectral information of the individual components from this data is a challenging task. Current analysis methods do not fully...

25. Supernova remnants hosting magentars

Ping Zhou, Jacco Vink, Samar Safi-Harb, Marco Miceli

Magnetars are regarded as the most magnetized neutron stars in the Universe. The study of them is essential to understand the origin of neutron star diversity. Among the 30 magnetars, around 10 are associated with supernova remnants (SNRs). Since the SNR and magnetar share a common progenitor and are born in a single explosion, studying...

22. The anisotropy of the ejecta in Cassiopeia A

Jacco Vink

I will review the anisotropies of the ejecta in Cas A, with a special emphasis on the jet and the iron ejecta. I will also discuss the energies of the jet, as their are two widely different estimates in the literature. I will put these discussion also in the context of the available literature on core-collapse explosions.

4. The role of rotation on the evolution of massive stars.

Alessandro Chieffi (speaker) & Marco Limongi

I will briefly discuss the various phenomena induced by rotation on the evolution of a massive and on the final explosive yields.

9. Tracing end of star from SNR observation

Ho-Gyu Lee

"We present results of near-infrared [Fe II] imaging and spectroscopic observations of young supernova remnants. Near-infrared [Fe II] line is a good tracer of dense shocked gas because of less extinction compared to optical wavelength and its relative strength compared to hydrogen line. We obtained images and spectra covering many positions of SNRs using recent integral-field...