A Detailed Observational Analysis of V1324 Sco, the Most Gamma-Ray-luminous Classical Nova to Date

Thomas Finzell; Laura Chomiuk; Brian D. Metzger; Frederick M. Walter; Justin D. Linford; Koji Mukai; Thomas Nelson; Jennifer H.S. Weston; Yong Zheng; Jennifer L. Sokoloski; Amy Mioduszewski; Michael P. Rupen; Subo Dong; Sumner Starrfield; C. C. Cheung; Charles E. Woodward; Gregory B. Taylor; Terry Bohlsen; Christian Buil; Jose Prieto; R. Mark Wagner; Thomas Bensby; I. A. Bond; T. Sumi; D. P. Bennett; F. Abe; N. Koshimoto; D. Suzuki; P. J. Tristram; Grant W. Christie; Tim Natusch; Jennie McCormick; Jennifer Yee; Andy Gould

doi:10.3847/1538-4357/aaa12a

A Detailed Observational Analysis of V1324 Sco, the Most Gamma-Ray-luminous Classical Nova to Date

Thomas Finzell
, Laura Chomiuk
, Brian D. Metzger
, Frederick M. Walter
, Justin D. Linford
, Koji Mukai
, Thomas Nelson
, Jennifer H.S. Weston
, Yong Zheng
, Jennifer L. Sokoloski
, Amy Mioduszewski
, Michael P. Rupen
, Subo Dong
, Sumner Starrfield
, C. C. Cheung
, Charles E. Woodward
, Gregory B. Taylor
, Terry Bohlsen
, Christian Buil
, Jose Prieto

R. Mark Wagner, Thomas Bensby, I. A. Bond, T. Sumi, D. P. Bennett, F. Abe, N. Koshimoto, D. Suzuki, P. J. Tristram, Grant W. Christie, Tim Natusch, Jennie McCormick, Jennifer Yee, Andy Gould

Physics and Astronomy

Michigan State University
Columbia University
George Washington University
NASA Goddard Space Flight Center
University of Maryland, Baltimore County
University of Minnesota Twin Cities
Green Bank Observatory
National Science Foundation
National Research Council of Canada
Peking University
Arizona State University
Naval Research Laboratory
University of New Mexico
Mirranook Observatory
Castanet Tolosan Observatory
Universidad Diego Portales
Millennium Institute of Astrophysics
University of Arizona
Ohio State University
Lund University
Massey University
The University of Osaka
Nagoya University
University of Canterbury
Auckland Observatory
Centre for Backyard Astrophysics
Harvard-Smithsonian Ctr. Astrophys.

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

It has recently been discovered that some, if not all, classical novae emit GeV gamma-rays during outburst, but the mechanisms involved in the production ofgamma-rays are still not well understood. We present here a comprehensive multiwavelength data set - from radio to X-rays - for the most gamma-ray-luminous classical nova to date, V1324 Sco. Using this data set, we show that V1324 Sco is a canonical dusty Fe ii-type nova, with a maximum ejecta velocity of 2600 km s^-1 and an ejecta mass of a few × 10^-5 M_⊙. There is also evidence for complex shock interactions, including a double-peaked radio light curve which shows high brightness temperatures at early times. To explore why V1324 Sco was so gamma-ray luminous, we present a model of the nova ejecta featuring strong internal shocks and find that higher gamma-ray luminosities result from higher ejecta velocities and/or mass-loss rates. Comparison of V1324 Sco with other gamma-ray-detected novae does not show clear signatures of either, and we conclude that a larger sample of similarly well-observed novae is needed to understand the origin and variation of gamma-rays in novae.

Original language	English
Article number	108
Journal	Astrophysical Journal
Volume	852
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/aaa12a
State	Published - Jan 10 2018

Keywords

gamma rays: stars
novae, cataclysmic variables
radio continuum: stars
stars: individual (V1324 Sco)

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10.3847/1538-4357/aaa12a

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Finzell, T., Chomiuk, L., Metzger, B. D., Walter, F. M., Linford, J. D., Mukai, K., Nelson, T., Weston, J. H. S., Zheng, Y., Sokoloski, J. L., Mioduszewski, A., Rupen, M. P., Dong, S., Starrfield, S., Cheung, C. C., Woodward, C. E., Taylor, G. B., Bohlsen, T., Buil, C., ... Gould, A. (2018). A Detailed Observational Analysis of V1324 Sco, the Most Gamma-Ray-luminous Classical Nova to Date. Astrophysical Journal, 852(2), Article 108. https://doi.org/10.3847/1538-4357/aaa12a

@article{4fa26b5f82ad407e96434412c8d2b3df,

title = "A Detailed Observational Analysis of V1324 Sco, the Most Gamma-Ray-luminous Classical Nova to Date",

abstract = "It has recently been discovered that some, if not all, classical novae emit GeV gamma-rays during outburst, but the mechanisms involved in the production ofgamma-rays are still not well understood. We present here a comprehensive multiwavelength data set - from radio to X-rays - for the most gamma-ray-luminous classical nova to date, V1324 Sco. Using this data set, we show that V1324 Sco is a canonical dusty Fe ii-type nova, with a maximum ejecta velocity of 2600 km s-1 and an ejecta mass of a few × 10-5 M⊙. There is also evidence for complex shock interactions, including a double-peaked radio light curve which shows high brightness temperatures at early times. To explore why V1324 Sco was so gamma-ray luminous, we present a model of the nova ejecta featuring strong internal shocks and find that higher gamma-ray luminosities result from higher ejecta velocities and/or mass-loss rates. Comparison of V1324 Sco with other gamma-ray-detected novae does not show clear signatures of either, and we conclude that a larger sample of similarly well-observed novae is needed to understand the origin and variation of gamma-rays in novae.",

keywords = "gamma rays: stars, novae, cataclysmic variables, radio continuum: stars, stars: individual (V1324 Sco)",

author = "Thomas Finzell and Laura Chomiuk and Metzger, \{Brian D.\} and Walter, \{Frederick M.\} and Linford, \{Justin D.\} and Koji Mukai and Thomas Nelson and Weston, \{Jennifer H.S.\} and Yong Zheng and Sokoloski, \{Jennifer L.\} and Amy Mioduszewski and Rupen, \{Michael P.\} and Subo Dong and Sumner Starrfield and Cheung, \{C. C.\} and Woodward, \{Charles E.\} and Taylor, \{Gregory B.\} and Terry Bohlsen and Christian Buil and Jose Prieto and Wagner, \{R. Mark\} and Thomas Bensby and Bond, \{I. A.\} and T. Sumi and Bennett, \{D. P.\} and F. Abe and N. Koshimoto and D. Suzuki and Tristram, \{P. J.\} and Christie, \{Grant W.\} and Tim Natusch and Jennie McCormick and Jennifer Yee and Andy Gould",

year = "2018",

month = jan,

day = "10",

doi = "10.3847/1538-4357/aaa12a",

language = "English",

volume = "852",

journal = "Astrophysical Journal",

issn = "0004-637X",

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Finzell, T, Chomiuk, L, Metzger, BD, Walter, FM, Linford, JD, Mukai, K, Nelson, T, Weston, JHS, Zheng, Y, Sokoloski, JL, Mioduszewski, A, Rupen, MP, Dong, S, Starrfield, S, Cheung, CC, Woodward, CE, Taylor, GB, Bohlsen, T, Buil, C, Prieto, J, Wagner, RM, Bensby, T, Bond, IA, Sumi, T, Bennett, DP, Abe, F, Koshimoto, N, Suzuki, D, Tristram, PJ, Christie, GW, Natusch, T, McCormick, J, Yee, J & Gould, A 2018, 'A Detailed Observational Analysis of V1324 Sco, the Most Gamma-Ray-luminous Classical Nova to Date', Astrophysical Journal, vol. 852, no. 2, 108. https://doi.org/10.3847/1538-4357/aaa12a

TY - JOUR

T1 - A Detailed Observational Analysis of V1324 Sco, the Most Gamma-Ray-luminous Classical Nova to Date

AU - Finzell, Thomas

AU - Chomiuk, Laura

AU - Metzger, Brian D.

AU - Walter, Frederick M.

AU - Linford, Justin D.

AU - Mukai, Koji

AU - Nelson, Thomas

AU - Weston, Jennifer H.S.

AU - Zheng, Yong

AU - Sokoloski, Jennifer L.

AU - Mioduszewski, Amy

AU - Rupen, Michael P.

AU - Dong, Subo

AU - Starrfield, Sumner

AU - Cheung, C. C.

AU - Woodward, Charles E.

AU - Taylor, Gregory B.

AU - Bohlsen, Terry

AU - Buil, Christian

AU - Prieto, Jose

AU - Wagner, R. Mark

AU - Bensby, Thomas

AU - Bond, I. A.

AU - Sumi, T.

AU - Bennett, D. P.

AU - Abe, F.

AU - Koshimoto, N.

AU - Suzuki, D.

AU - Tristram, P. J.

AU - Christie, Grant W.

AU - Natusch, Tim

AU - McCormick, Jennie

AU - Yee, Jennifer

AU - Gould, Andy

PY - 2018/1/10

Y1 - 2018/1/10

N2 - It has recently been discovered that some, if not all, classical novae emit GeV gamma-rays during outburst, but the mechanisms involved in the production ofgamma-rays are still not well understood. We present here a comprehensive multiwavelength data set - from radio to X-rays - for the most gamma-ray-luminous classical nova to date, V1324 Sco. Using this data set, we show that V1324 Sco is a canonical dusty Fe ii-type nova, with a maximum ejecta velocity of 2600 km s-1 and an ejecta mass of a few × 10-5 M⊙. There is also evidence for complex shock interactions, including a double-peaked radio light curve which shows high brightness temperatures at early times. To explore why V1324 Sco was so gamma-ray luminous, we present a model of the nova ejecta featuring strong internal shocks and find that higher gamma-ray luminosities result from higher ejecta velocities and/or mass-loss rates. Comparison of V1324 Sco with other gamma-ray-detected novae does not show clear signatures of either, and we conclude that a larger sample of similarly well-observed novae is needed to understand the origin and variation of gamma-rays in novae.

AB - It has recently been discovered that some, if not all, classical novae emit GeV gamma-rays during outburst, but the mechanisms involved in the production ofgamma-rays are still not well understood. We present here a comprehensive multiwavelength data set - from radio to X-rays - for the most gamma-ray-luminous classical nova to date, V1324 Sco. Using this data set, we show that V1324 Sco is a canonical dusty Fe ii-type nova, with a maximum ejecta velocity of 2600 km s-1 and an ejecta mass of a few × 10-5 M⊙. There is also evidence for complex shock interactions, including a double-peaked radio light curve which shows high brightness temperatures at early times. To explore why V1324 Sco was so gamma-ray luminous, we present a model of the nova ejecta featuring strong internal shocks and find that higher gamma-ray luminosities result from higher ejecta velocities and/or mass-loss rates. Comparison of V1324 Sco with other gamma-ray-detected novae does not show clear signatures of either, and we conclude that a larger sample of similarly well-observed novae is needed to understand the origin and variation of gamma-rays in novae.

KW - gamma rays: stars

KW - novae, cataclysmic variables

KW - radio continuum: stars

KW - stars: individual (V1324 Sco)

UR - https://www.scopus.com/pages/publications/85040659904

U2 - 10.3847/1538-4357/aaa12a

DO - 10.3847/1538-4357/aaa12a

M3 - Article

AN - SCOPUS:85040659904

SN - 0004-637X

VL - 852

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 108

ER -

A Detailed Observational Analysis of V1324 Sco, the Most Gamma-Ray-luminous Classical Nova to Date

Abstract

Keywords

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