Semantic Scholar Open Access 2015 158 sitasi

Limits on dark matter annihilation signals from the Fermi LAT 4-year measurement of the isotropic gamma-ray background

The Fermi-LAT Collaboration M. Ackermann M. Ajello A. Albert L. Baldini +108 lainnya

Lihat Sumber DOI

Abstrak

We search for evidence of dark matter (DM) annihilation in the isotropic gamma-ray background (IGRB) measured with 50 months of Fermi Large Area Telescope (LAT) observations. An improved theoretical description of the cosmological DM annihilation signal, based on two complementary techniques and assuming generic weakly interacting massive particle (WIMP) properties, renders more precise predictions compared to previous work. More specifically, we estimate the cosmologically-induced gamma-ray intensity to have an uncertainty of a factor ~ 20 in canonical setups. We consistently include both the Galactic and extragalactic signals under the same theoretical framework, and study the impact of the former on the IGRB spectrum derivation. We find no evidence for a DM signal and we set limits on the DM-induced isotropic gamma-ray signal. Our limits are competitive for DM particle masses up to tens of TeV and, indeed, are the strongest limits derived from Fermi LAT data at TeV energies. This is possible thanks to the new Fermi LAT IGRB measurement, which now extends up to an energy of 820 GeV. As a result, we quantify uncertainties in detail and show the potential this type of search offers for testing the WIMP paradigm with a complementary and truly cosmological probe ofmore » DM particle signals.« less

Topik & Kata Kunci

Physics

Penulis (113)

The Fermi-LAT Collaboration

M. Ackermann

M. Ajello

A. Albert

L. Baldini

G. Barbiellini

D. Bastieri

K. Bechtol

R. Bellazzini

E. Bissaldi

E. Bloom

R. Bonino

J. Bregeon

P. Bruel

R. Buehler

S. Buson

G. Caliandro

R. Cameron

M. Caragiulo

P. Caraveo

C. Cecchi

E. Charles

A. Chekhtman

J. Chiang

G. Chiaro

S. Ciprini

R. Claus

J. Cohen-Tanugi

J. Conrad

A. Cuoco

S. Cutini

F. D’Ammando

A. Angelis

F. Palma

C. Dermer

S. Digel

P. Drell

A. Drlica-Wagner

C. Favuzzi

E. Ferrara

A. Franckowiak

Y. Fukazawa

S. Funk

P. Fusco

F. Gargano

D. Gasparrini

N. Giglietto

F. Giordano

M. Giroletti

G. Godfrey

S. Guiriec

M. Gustafsson

J. Hewitt

X. Hou

T. Kamae

M. Kuss

S. Larsson

L. Latronico

F. Longo

F. Loparco

M. Lovellette

P. Lubrano

D. Malyshev

F. Massaro

M. Mayer

M. Mazziotta

P. Michelson

W. Mitthumsiri

T. Mizuno

M. Monzani

A. Morselli

I. Moskalenko

S. Murgia

M. Negro

R. Nemmen

É. Nuss

T. Ohsugi

M. Orienti

E. Orlando

J. Ormes

D. Paneque

J. Perkins

M. Pesce-Rollins

F. Piron

G. Pivato

S. Rainò

R. Rando

M. Razzano

A. Reimer

O. Reimer

M. Sánchez-Conde

A. Schulz

C. Sgro’

E. Siskind

G. Spandre

P. Spinelli

A. Strong

D. Suson

H. Tajima

H. Takahashi

J. Thayer

L. Tibaldo

M. Tinivella

D. Torres

E. Troja

Y. Uchiyama

G. Vianello

M. Werner

B. Winer

K. Wood

M. Wood

G. Zaharijas

Format Sitasi

APA MLA BibTeX

Collaboration, T.F., Ackermann, M., Ajello, M., Albert, A., Baldini, L., Barbiellini, G. et al. (2015). Limits on dark matter annihilation signals from the Fermi LAT 4-year measurement of the isotropic gamma-ray background. https://doi.org/10.1088/1475-7516/2015/09/008

@article{collaboration2015, author = {The Fermi-LAT Collaboration and M. Ackermann and M. Ajello and A. Albert and L. Baldini and G. Barbiellini and D. Bastieri and K. Bechtol and R. Bellazzini and E. Bissaldi and E. Bloom and R. Bonino and J. Bregeon and P. Bruel and R. Buehler and S. Buson and G. Caliandro and R. Cameron and M. Caragiulo and P. Caraveo and C. Cecchi and E. Charles and A. Chekhtman and J. Chiang and G. Chiaro and S. Ciprini and R. Claus and J. Cohen-Tanugi and J. Conrad and A. Cuoco and S. Cutini and F. D’Ammando and A. Angelis and F. Palma and C. Dermer and S. Digel and P. Drell and A. Drlica-Wagner and C. Favuzzi and E. Ferrara and A. Franckowiak and Y. Fukazawa and S. Funk and P. Fusco and F. Gargano and D. Gasparrini and N. Giglietto and F. Giordano and M. Giroletti and G. Godfrey and S. Guiriec and M. Gustafsson and J. Hewitt and X. Hou and T. Kamae and M. Kuss and S. Larsson and L. Latronico and F. Longo and F. Loparco and M. Lovellette and P. Lubrano and D. Malyshev and F. Massaro and M. Mayer and M. Mazziotta and P. Michelson and W. Mitthumsiri and T. Mizuno and M. Monzani and A. Morselli and I. Moskalenko and S. Murgia and M. Negro and R. Nemmen and É. Nuss and T. Ohsugi and M. Orienti and E. Orlando and J. Ormes and D. Paneque and J. Perkins and M. Pesce-Rollins and F. Piron and G. Pivato and S. Rainò and R. Rando and M. Razzano and A. Reimer and O. Reimer and M. Sánchez-Conde and A. Schulz and C. Sgro’ and E. Siskind and G. Spandre and P. Spinelli and A. Strong and D. Suson and H. Tajima and H. Takahashi and J. Thayer and J. Thayer and L. Tibaldo and M. Tinivella and D. Torres and E. Troja and Y. Uchiyama and G. Vianello and M. Werner and B. Winer and K. Wood and M. Wood and G. Zaharijas}, title = {Limits on dark matter annihilation signals from the Fermi LAT 4-year measurement of the isotropic gamma-ray background}, year = {2015}, journal = {Semantic Scholar}, doi = {10.1088/1475-7516/2015/09/008}, url = {https://www.semanticscholar.org/paper/478a3c69e3154d18a51974e1a378758fc7be1028}, }

Akses Cepat

Lihat di Sumber doi.org/10.1088/1475-7516/2015/09/008

Informasi Jurnal

Tahun Terbit: 2015
Bahasa: en
Total Sitasi: 158×
Sumber Database: Semantic Scholar
DOI: 10.1088/1475-7516/2015/09/008
Akses: Open Access ✓