Binary orbits as the driver of γ-ray emission and mass ejection in classical novae

  title={Binary orbits as the driver of $\gamma$-ray emission and mass ejection in classical novae},
  author={Laura Chomiuk and Justin D. Linford and Jianbo Yang and T. J. O’brien and Zsolt Paragi and Amy J. Mioduszewski and R. J. Beswick and C. C. Cheung and Koji Mukai and T. Nelson and V A R M Ribeiro and Michael Perry Rupen and J. L. Sokoloski and J. H. S. Weston and Yong-gang Zheng and Michael F. Bode and S. P. S. Eyres and Nirupam Roy and Gregory B. Taylor},
Classical novae are the most common astrophysical thermonuclear explosions, occurring on the surfaces of white dwarf stars accreting gas from companions in binary star systems. Novae typically expel about 10−4 solar masses of material at velocities exceeding 1,000 kilometres per second. However, the mechanism of mass ejection in novae is poorly understood, and could be dominated by the impulsive flash of thermonuclear energy, prolonged optically thick winds or binary interaction with the nova… Expand
Direct evidence for shock-powered optical emission in a nova
Classical novae are thermonuclear explosions that occur on the surfaces of white dwarf stars in interacting binary systems 1 . It has long been thought that the luminosity of classical novae isExpand
A nova outburst powered by shocks
Classical novae are runaway thermonuclear burning events on the surfaces of accreting white dwarfs in close binary star systems, sometimes appearing as new naked-eye sources in the night sky1. TheExpand
Gamma-ray novae as probes of relativistic particle acceleration at non-relativistic shocks
The Fermi LAT discovery that classical novae produce >100 MeV gamma-rays establishes that shocks and relativistic particle acceleration are key features of these events. These shocks are likely to beExpand
Gamma-ray emission from internal shocks in novae
Gamma-ray emission at energies >100MeV has been detected from nine novae using the Fermi-LAT, and it can be explained by particle acceleration at shocks in these systems. Eight out of these nineExpand
Getting to know classical novae with Swift
Abstract Novae have been reported as transients for more than two thousand years. Their bright optical outbursts are the result of explosive nuclear burning of gas accreted from a binary companionExpand
Shocks in nova outflows. II. Synchrotron radio emission
The discovery of GeV gamma-rays from classical novae indicates that shocks and relativistic particle acceleration are energetically key in these events. Further evidence for shocks comes from thermalExpand
Novae as Tevatrons: prospects for CTA and IceCube
The discovery of novae as sources of ~GeV gamma-rays highlights the key role of shocks and relativistic particle acceleration in these transient systems. Although there is evidence for a spectralExpand
High-energy Emission from Nonrelativistic Radiative Shocks: Application to Gamma-Ray Novae
Multiwavelength radiation from relativistic particles accelerated at shocks in novae and other astrophysical sources carries a wealth of information about the outflow properties and the microphysicalExpand
Non-thermal radio emission from colliding flows in classical nova V1723 Aql
The importance of shocks in nova explosions has been highlighted by Fermi's discovery of \gamma-ray producing novae. Over three years of multi-band VLA radio observations of the 2010 nova V1723 AqlExpand
Very high energy gamma-ray follow-up observations of novae and dwarf novae with the MAGIC telescopes
In the last few years the Fermi-LAT instrument has detected G V gamma-ray emission from several novae. Such GeV emission can be interpreted in terms of inverse Compton emission from electronsExpand


Gamma-ray emission concurrent with the nova in the symbiotic binary V407 Cygni.
This work reports the Fermi Large Area Telescope detection of variable gamma-ray emission from the recently detected optical nova of the symbiotic star V407 Cygni and proposes that the material of the nova shell interacts with the dense ambient medium of the red giant primary and that particles can be accelerated effectively to produce pi(0) decay gamma-rays from proton-proton interactions. Expand
Uncovering the Nature of Nova Jets: A Radio Image of Highly Collimated Outflows from RS Ophiuchi
Novae occur when hydrogen-rich fuel provided by a companion star ignites on the surface of a white dwarf (WD). Although the surface of the WD is nearly spherical, observations indicate that at leastExpand
Fermi Establishes Classical Novae as a Distinct Class of Gamma-ray Sources
A classical nova results from runaway thermonuclear explosions on the surface of a white dwarf that accretes matter from a low-mass main-sequence stellar companion. In 2012 and 2013, three novae wereExpand
An asymmetric shock wave in the 2006 outburst of the recurrent nova RS Ophiuchi
The detection of spatially resolved structure in RS Ophiuchi from two weeks after its 12 February 2006 outburst is reported, producing a remnant similar to that of a type II supernova but evolving over months rather than millennia. Expand
Shaping of nova remnants by binary motion
We present the results of 2.5D hydrodynamic calculations of the effects of the underlying binary system on shaping the ejecta in a classical nova outburst. In the model, the outburst takes place inExpand
The radio and X-ray emission from type II supernovae.
The interaction of the outer parts of a supernova envelope with circumstellar matter gives rise to a high-energy density shell. The equation of motion of the shell is deduced based on theExpand
Gamma-ray binaries and related systems
After initial claims and a long hiatus, it is now established that several binary stars emit high- (0.1–100 GeV) and very high-energy (>100 GeV) gamma rays. A new class has emerged called “gamma-rayExpand
Photometric evolution, orbital modulation and progenitor of Nova Mon 2012
We present and discuss accurate and densely mapped BV RCIC lightcurves of the neon Nova Mon 2012, supplemented by the evolution in Stromgren b and y bands and in the integrated flux of relevantExpand
Nova Monocerotis 2012 is the third {gamma}-ray transient identified with a thermonuclear runaway on a white dwarf, that is, a nova event. Swift monitoring has revealed the distinct evolution of theExpand
Radio images of the expanding ejecta of nova QU Vulpeculae 1984
Nova QU Vulpeculae 1984, with a peak visual magnitude of 5.7 (ref. 1) was one of the brightest and most unusual novae of recent times. Infrared spectrophotometry2,3 showed an extremely strong [Ne II]Expand