Nova LMC 2009a as observed with XMM-Newton, compared with other novae
arXiv:2105.05346 · doi:10.1093/mnras/stab1391
Abstract
We examine four high resolution reflection grating spectrometers (RGS) spectra of the February 2009 outburst of the luminous recurrent nova LMC 2009a. They were very complex and rich in intricate absorption and emission features. The continuum was consistent with a dominant component originating in the atmosphere of a shell burning white dwarf (WD) with peak effective temperature between 810,000 K and a million K, and mass in the 1.2-1.4 M range. A moderate blue shift of the absorption features of a few hundred km s can be explained with a residual nova wind depleting the WD surface at a rate of about 10 M yr. The emission spectrum seems to be due to both photoionization and shock ionization in the ejecta. The supersoft X-ray flux was irregularly variable on time scales of hours, with decreasing amplitude of the variability. We find that both the period and the amplitude of another, already known 33.3 s modulation, varied within timescales of hours. We compared N LMC 2009a with other Magellanic Clouds novae, including 4 serendipitously discovered as supersoft X-ray sources (SSS) among 13 observed within 16 years after the eruption. The new detected targets were much less luminous than expected: we suggest that they were partially obscured by the accretion disk. Lack of SSS detections in the Magellanic Clouds novae more than 5.5 years after the eruption constrains the average duration of the nuclear burning phase.
Accepted for publication in MNRAS
References in corpus (45)
- On the Absorption of X-rays in the Interstellar Medium
- Collisional Plasma Models with APEC/APED: Emission Line Diagnostics of Hydrogen-like and Helium-like Ions
- A distance to the Large Magellanic Cloud that is precise to one per cent
- An Extended Grid of Nova Models: II. The Parameter Space of Nova Outbursts
- On the use of C-stat in testing models for X-ray spectra
- Catalog of 93 Nova Light Curves: Classification and Properties
- Hydrogen Burning on Accreting White Dwarfs: Stability, Recurrent Novae, and the Post-Novae Supersoft Source
- Swift X-Ray Observations of Classical Novae. II. The Super Soft Source sample
- Systematic comparison of photoionised plasma codes with application to spectroscopic studies of AGN in X-rays
- X-ray emission from classical and recurrent-novae observed with ROSAT
- X-ray Spectroscopy of the 2006 Outburst of RS Oph
- NLTE model atmospheres for the hottest white dwarfs: Spectral analysis of the compact component in nova V4743 Sgr
- Early spectral evolution of classical novae: consistent evidence for multiple distinct outflows
- The Extraordinary X-ray Light Curve of the Classical Nova V1494 Aquilae (1999 #2) in Outburst: The Discovery of Pulsations and a "Burst"
- XMM-Newton X-ray and UV observations of the fast nova V2491 Cyg during the supersoft source phase
- Obscuration effects in Super-Soft-Source X-ray spectra
- From X-ray dips to eclipse: Witnessing disk reformation in the recurrent nova USco
- A Luminous Be+White Dwarf Supersoft Source in the Wing of the SMC: MAXI J0158-744
- Thomson Scattering and Collisional Ionization in the X-rays Grating Spectra of the Recurrent Nova U Scorpii
- X-Ray Grating Observations of Recurrent Nova T Pyxidis During The 2011 Outburst
- An X-ray emission line spectrum of Nova V382 Velorum 1999
- Discovery of the 2010 Eruption and the Pre-Eruption Light Curve for Recurrent Nova U Scorpii
- Short-period X-ray oscillations in super-soft novae and persistent SSS
- Multiwavelength observations of V407 Lupi (ASASSN-16kt) --- a very fast nova erupting in an intermediate polar
- Hydrodynamic Studies of the Evolution of Recurrent, Symbiotic, and Dwarf Novae: The White Dwarf Components are Growing in Mass
- OGLE Atlas of Classical Novae. II. Magellanic Clouds
- Extraordinary luminous soft X-ray transient MAXI J0158-744 as an ignition of a nova on a very massive O-Ne white dwarf
- XMM-Newton discovery of 217 s pulsations in the brightest persistent supersoft X-ray source in M31
- Chandra High Energy Transmission Gratings Spectra of V3890 Sgr
- Pan-Chromatic observations of the Recurrent Nova LMC 2009a (LMC 1971b)
- A Public Set of Synthetic Spectra from Expanding Atmospheres for X-Ray Novae. I. Solar Abundances
- A XMM-Newton observation of Nova LMC 1995, a bright supersoft X-ray source
- Neil Gehrels Swift Observatory studies of supersoft novae
- Multiwavelength observations of nova SMCN 2016-10a --- one of the brightest novae ever observed
- Chemical and physical parameters from X-ray high resolution spectra of the Galactic nova V959 Mon
- A phenomenological model for the X-ray spectrum of Nova V2491 Cygni
- The 2010 Eruption of the Recurrent Nova U Scorpii: The Multi-Wavelength Light Curve
- Distance and Reddening of the Enigmatic Gamma-ray-Detected Nova V1324 Sco
- Evolution of X-ray spectra and light curves of V1494 Aquilae
- What we learn from the X-ray grating spectra of Nova SMC 2016
- The January 2016 eruption of recurrent nova LMC 1968
- Non-Radial Pulsations in Post-Outburst Novae
- Pan-chromatic observations of the remarkable nova LMC 2012
- Counter evidence against multiple frequency nature of 0.75 mHz oscillation in V4743 Sgr
- An eLIMA model for the 67 s X-ray periodicity in CAL 83