# Magnetic Flux Rope Shredding by a Hyperbolic Flux Tube: The Detrimental Effects of Magnetic Topology on Solar Eruptions

## TL;DR

This study investigates a failed solar eruption where a magnetic flux rope was destroyed by the ambient magnetic topology, highlighting the critical role of magnetic field configuration in solar eruption outcomes.

## Contribution

It provides high-resolution multi-wavelength observations and magnetofrictional simulations demonstrating how magnetic topology influences the success or failure of solar eruptions.

## Key findings

- Magnetic flux rope was destroyed during interaction with ambient magnetic field.
- Magnetic topology is crucial for determining eruption success.
- Failed eruption involved downflows and diffuse hot structures.

## Abstract

We present the analysis of an unusual failed eruption captured in high cadence and in many wavelengths during the observing campaign in support of the VAULT2.0 sounding rocket launch. The refurbished Very high Angular resolution Ultraviolet Telescope (VAULT2.0) is a Ly$\alpha$ ($\lambda$ 1216 {\AA}) spectroheliograph launched on September 30, 2014. The campaign targeted active region NOAA AR 12172 and was closely coordinated with the Hinode and IRIS missions and several ground-based observatories (NSO/IBIS, SOLIS, and BBSO). A filament eruption accompanied by a low level flaring event (at the GOES C-class level) occurred around the VAULT2.0 launch. No Coronal Mass Ejection (CME) was observed. The eruption and its source region, however, were recorded by the campaign instruments in many atmospheric heights ranging from the photosphere to the corona in high cadence and spatial resolution. This is a rare occasion which enables us to perform a comprehensive investigation on a failed eruption. We find that a rising Magnetic Flux Rope-like (MFR) structure was destroyed during its interaction with the ambient magnetic field creating downflows of cool plasma and diffuse hot coronal structures reminiscent of "cusps". We employ magnetofrictional simulations to show that the magnetic topology of the ambient field is responsible for the destruction of the MFR. Our unique observations suggest that the magnetic topology of the corona is a key ingredient for a successful eruption.