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Related papers: The Distance to Nova V959 Mon from VLA Imaging

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V959 Mon (Nova Mon 2012) was first detected by the Fermi Large Area Telescope in June 2012, as a transient gamma-ray source. Subsequent optical observations showed that this gamma-ray emission was due to a classical nova explosion.…

Solar and Stellar Astrophysics · Physics 2017-11-01 F. Healy , T. J. O Brien , R. Beswick , A. Avison , M. K. Argo

V959 Mon is one of the gamma-ray detected novae. It was optically discovered about 50 days after the gamma-ray detection due to proximity to the Sun. The nova speed class is unknown because of lack of the earliest half of optical light…

Solar and Stellar Astrophysics · Physics 2018-05-23 Izumi Hachisu , Mariko Kato

X-ray observations of shocked gas in novae can provide a useful probe of the dynamics of the ejecta. Here we report on X-ray observations of the nova V959 Mon, which was also detected in GeV gamma-rays with the Fermi satellite. We find that…

V959 Mon is a classical nova detected at GeV gamma-ray wavelengths on 2012 June 19. While classical novae are now routinely detected in gamma-rays, the origin of the shocks that produce relativistic particles has remained unknown. We…

High Energy Astrophysical Phenomena · Physics 2015-04-10 Jun Yang , Zsolt Paragi , Tim J. O'Brien , Laura Chomiuk , Justin D. Linford

Classical novae emit gamma-ray radiation at 511 keV and below, with a cut-off at around (20-30) keV, related to positron annihilation and its Comptonization in the expanding envelope. This emission has been elusive up to now, because it…

Astrophysics · Physics 2009-10-31 M. Hernanz , J. Jose , A. Coc , J. Gomez-Gomar , J. Isern

In 2010/3, the Large Area Telescope on board Fermi revealed a transient gamma-ray source, positionally coincident with the optical nova in the symbiotic binary, V407Cyg. This event marked the first discovery of gamma-ray emission from a…

Solar and Stellar Astrophysics · Physics 2020-07-01 M. Giroletti , U. Munari , E. Körding , A. Mioduszewski , J. Sokoloski , C. C. Cheung , S. Corbel , F. Schinzel , K. Sokolovsky , T. J. O'Brien

Nova Mon 2012 was the first classical nova to be detected as a high energy $\gamma$-ray transient, by Fermi-LAT, before its optical discovery. We study a time sequence of high resolution optical echelle spectra (Nordic Optical Telescope)…

Solar and Stellar Astrophysics · Physics 2015-06-15 S. N. Shore , I. De Gennaro Aquino , G. J. Schwarz , T. Augusteijn , C. C. Cheung , F. M. Walter , S. Starrfield

Novae have long been expected to be sources of emission at several MeV from the decay of radioactive elements in the novae ejecta, however, they were not anticipated to be sources of continuum emission in the GeV energy domain. In March…

High Energy Astrophysical Phenomena · Physics 2013-08-30 A. B. Hill , C. C. Cheung , P. Jean

The radio light curves of novae rise and fall over the course of months to years, allowing for detailed observations of the evolution of the nova shell. However, the main parameter determined by radio models of nova explosions - the mass of…

Two observations of V959 Mon, done using the Chandra X-ray gratings during the late outburst phases (2012 September and December), offer extraordinary insight into the physics and chemistry of this Galactic ONe nova. the X-ray flux was 1.7…

High Energy Astrophysical Phenomena · Physics 2016-09-21 U. Peretz , M. Orio , E. Behar , A. Bianchini , J. Gallagher , T. Rauch , B. Tofflemire , P. Zemko

Previously, Nova Puppis 1991 (V351 Pup) was measured to host one of the most massive ejections claimed in the literature. Multi-frequency radio detections from one epoch were published for this nova in the 1990's, and yet, the remaining…

Solar and Stellar Astrophysics · Physics 2017-05-24 Carolyn N. Wendeln , Laura Chomiuk , Thomas Finzell , Justin D. Linford , Jay Strader

Nova Cen 2013 (V1369 Cen) is the fourth bright nova observed panchromatically through high resolution UV+optical multi epoch spectroscopy. It is also the nova with the richest set of spectra (both in terms of data quality and number of…

Solar and Stellar Astrophysics · Physics 2018-07-25 Elena Mason , Steven N. Shore , Ivan De Gennaro Aquino , Luca Izzo , Kim Page , Greg J. Schwarz

It has recently been discovered that some, if not all, classical novae emit GeV gamma-rays during outburst. Despite using an unreliable method to determine its distance, previous work showed that nova V1324 Sco was the most gamma-ray…

Solar and Stellar Astrophysics · Physics 2015-09-09 Thomas Finzell , Laura Chomiuk , Ulisse Munari , Frederick M. Walter

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 Aql show that shocks between fast and slow…

Classical Novae were revealed as a surprise source of gamma-rays in Fermi LAT observations. During the first 8 years since the LAT was launched, 6 novae in total have been detected to > 5 sigma in gamma-rays, in contrast to the 69…

High Energy Astrophysical Phenomena · Physics 2017-04-03 Paul J. Morris , Garret Cotter , Anthony M. Brown , Paula M. Chadwick

Classical novae in the Milky Way have now been well-established as high-energy GeV $\gamma$-ray sources. In novae with main-sequence companions, this emission is believed to result from shocks internal to the nova ejecta, as a later fast…

Classical novae produce radioactive nuclei which are emitters of gamma-rays in the MeV range. Some examples are the lines at 478 and 1275 keV (from 7Be and 22Na) and the positron-electron annihilation emission, with the 511 keV line and a…

High Energy Astrophysical Phenomena · Physics 2013-05-06 M. Hernanz

V1494 Aql was a very fast nova which reached a visual maximum of about 4.0 by the end of 1999 December 3. We report observations from 4 to 284 days after discovery, including sub-mm- and cm-band fluxes, a single MERLIN image, and optical…

Astrophysics · Physics 2009-11-10 S. P. S. Eyres , I. Heywood , T. J. O'Brien , R. J. Ivison , T. W. B. Muxlow , V. G. Elkin

We used the Palomar Testbed Interferometer (PTI) to resolve 2.2 $\mu$m emission from the classical nova V458 Vul 2007 over the course of several days following its discovery on 2007 August 8.54 UT. We also obtained K-band photometric data…

We present radio light curves and spectra of the classical nova V1723 Aql obtained with the Expanded Very Large Array (EVLA). This is the first paper to showcase results from the EVLA Nova Project, which comprises a team of observers and…

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