123 citations · 221 across the 14 of their papers we have counts for
13 papers
A very rapidly rotating white dwarf in nova YZ Reticuli
G. J. M. Luna, N. Rawat, R. Angeloni +4
YZ Ret (Nova Reticuli 2020) is the first VY Scl-type nova-like variable observed to undergo a classical nova eruption. Following the outburst, timing analysis of 20-s cadence TESS…
The powerful shocks in RS Oph: NuSTAR X-ray data and a complete review
Marina Orio, Gerardo Juan M. Luna, Ehud Behar +4
In the 2021 outburst of RS Ophiuchi, the gamma- and the X-ray flux were measured quasi-simultaneously from day 1 after the optical peak, offering the first comprehensive view of sh…
A TESS View of Post-Eruption Variability in the Novae V1405 Cas,V1716 Sco, and V1674 Her
G. J. M. Luna, A. Dobrotka, M. Orio
We analyzed TESS archival data of three novae after recent outbursts, searching the orbital and white dwarf (WD) rotation period and possible variations of these periods. In V1405…
Evolution of the optical emission lines and the X-ray emission during the super-active stage of T CrB
K. A. Stoyanov, G. J. M. Luna, R. K. Zamanov +6
T CrB is a symbiotic star that experiences nova outbursts every 80~yr. The next, long-anticipated nova outburst should occur during the 2024-2026 period. Here, we present re…
Symbiotic stars in X-rays IV: XMM-Newton, Swift and TESS observations
Isabel J. Lima, G. Juan M. Luna, Koji Mukai +7
White dwarf symbiotic binaries are detected in X-rays with luminosities in the range of 10 to 10 lumcgs. Their X-ray emission arises either from the accretion disk bo…
Soft X-ray and FUV observations of Nova Her 2021 (V1674~Her) with AstroSat
Yash Bhargava, Gulab Chand Dewangan, G. C. Anupama +8
Nova Her 2021 or V1674 Her was one of the fastest novae to be observed so far. We report here the results from our timing and spectral studies of the source observed at multiple ep…
The contact binary system TYC 7275-1968-1 as seen by optical, UV and X-ray observations
Isabel J. Lima, Ana C. Mattiuci, G. Juan M. Luna +4
We present an analysis of publicly available X-ray and optical observations of TYC 7275-1968-1, a contact binary, red nova progenitor candidate. The long optical time series of ASA…
The orbital period of the nova V1674 Her as observed with TESS
G. J. M. Luna, I. J. Lima, M. Orio
Nova Her 2021 was observed with TESS 12.62 days after its most recent outburst in June 12.537 2021. This cataclysmic variable belongs to the intermediate polar class, with an spin…
Taking a break: paused accretion in the symbiotic binary RT Cru
A. Pujol, G. J. M. Luna, K. Mukai +10
Symbiotic binaries sometimes hide their symbiotic nature for significant periods of time. There is mounting observational evidence that in those symbiotics that are powered solely…
Optical spectroscopy and X-ray observations of the D-type symbiotic star EF Aql
K. A. Stoyanov, K. Iłkiewicz, G. J. M. Luna +6
We performed high-resolution optical spectroscopy and X-ray observations of the recently identified Mira-type symbiotic star EF Aql. Based on high-resolution optical spectroscopy o…
On the nature of CP Pup
Elena Mason, Marina Orio, Koji Mukai +6
We present new X-ray and optical spectra of the old nova CP Pup (nova Pup 1942) obtained with Chandra and the CTIO 4m telescope. The X-ray spectrum reveals a multi-temperature opti…
Symbiotic stars in X-rays
G. J. M. Luna, J. L. Sokoloski, K. Mukai +1
Until recently, symbiotic binary systems in which a white dwarf accretes from a red giant were thought to be mainly a soft X-ray population. Here we describe the detection with the…
Swift Observations of Hard X-ray Emitting White Dwarfs in Symbiotic Stars
J. A. Kennea, K. Mukai, J. L. Sokoloski +4
The X-ray emission from most accreting white dwarfs (WDs) in symbiotic binary stars is quite soft. Several symbiotic WDs, however, produce strong X-ray emission at energies greater…