The big blue bump and soft X-ray excess of individual quasars

TL;DR

This study investigates the nature of the soft X-ray excess in quasars, showing it is not an extension of the Big Blue Bump and proposing a dust-absorbed continuum model to explain UV and X-ray observations.

Contribution

It demonstrates that the soft X-ray excess is distinct from the Big Blue Bump and introduces a dust absorption model to reconcile theoretical continua with observations.

Findings

Soft X-ray excess is not a prolongation of the Big Blue Bump.

A dust-absorbed continuum model explains UV break and softness problem.

Reconciliation of theoretical continuum with observational features.

Abstract

For 11 quasar, we find that the soft X-ray excess component is not prolongation of the Big Blue Bump. Furthermore, adopting a theoretical continuum that is absorbed by the appropriate amount of intrinsic dust, we are able to reconcile this universal theoretical continuum with the UV break and the softness problem. Para 11 quasares, encontramos que el exceso de rayos-X suaves no es una prolongacion de la Gran Joroba Azul. Aun mas, adoptando un continuo ionizante teorico absorbido por una cantidad diversa de polvo intrinseco para cada quasar, podemos reconciliar este continuo teorico con el quiebre UV con el problema de suavidad.