Morphology of the Light Curves for the X-ray Novae H1743-322 and GX339-4 during their Outbursts in 2005-2019

TL;DR

This study analyzes long-term X-ray observations of two novae, classifying their outbursts into distinct types and exploring the underlying physical mechanisms using the truncated accretion disk model.

Contribution

It provides a detailed classification of outburst morphologies and confirms the existence of two main outburst types with their variants in two X-ray novae.

Findings

Confirmed two main outburst types: soft and hard.

Identified ultrabright and intermediate variants of outbursts.

Discussed differences in light curves using the truncated accretion disk model.

Abstract

Based on long-term SWIFT, RXTE, and MAXI observations of the X-ray novae H1743-322 (IGR J17464-3213) and GX339-4, we have investigated the morphology and classified the light curves of their X-ray outbursts. In particular, we have confirmed the existence of two radically different types of outbursts, soft (S) and hard (H), in both sources and revealed their varieties, ultrabright (U) and intermediate (I). The properties and origin of the differences in the light curves of these outbursts are discussed in terms of the truncated accretion disk model.